2015 Chevrolet Express Owners Manual

vehicle after washing to protect and extend the molding finish.

Cleaning Exterior Lamps/ Lenses, Emblems, Decals and Stripes Use only lukewarm or cold water, a soft cloth, and a car washing soap to clean exterior lamps, lenses, emblems, decals and stripes. Follow instructions under "Washing the Vehicle" previously in this section. Lamp covers are made of plastic, and some have a UV protective coating. Do not clean or wipe them while they are dry. Do not use any of the following on lamp covers: . Abrasive or caustic agents. . Washer fluids and other cleaning

agents in higher concentrations than suggested by the manufacturer.

. Solvents, alcohols, fuels, or other harsh cleaners. Ice scrapers or other hard items.

. Aftermarket appearance caps or

covers while the lamps are illuminated, due to excessive heat generated.

{ Caution

Failure to clean lamps properly can cause damage to the lamp cover that would not be covered by the vehicle warranty.

{ Caution

Using wax on low gloss black finish stripes can increase the gloss level and create a non-uniform finish. Clean low gloss stripes with soap and water only.

Air Intakes Clear debris from the air intakes, between the hood and windshield when washing the vehicle.

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Windshield and Wiper Blades Clean the outside of the windshield with glass cleaner. Clean rubber blades using a lint-free cloth or paper towel soaked with windshield washer fluid or a mild detergent. Wash the windshield thoroughly when cleaning the blades. Bugs, road grime, sap, and a buildup of vehicle wash/wax treatments may cause wiper streaking. Replace the wiper blades if they are worn or damaged. Damage can be caused by extreme dusty conditions, sand, salt, heat, sun, snow, and ice. Weatherstrips Apply Dielectric silicone grease on weatherstrips to make them last longer, seal better, and not stick or squeak. Lubricate weatherstrips at least once a year. Hot, dry climates may require more frequent application. Black marks from rubber material on painted surfaces

can be removed by rubbing with a clean cloth. See Recommended Fluids and Lubricants on page 11-11. Tires Use a stiff brush with tire cleaner to clean the tires.

{ Caution

Using petroleum-based tire dressing products on the vehicle may damage the paint finish and/ or tires. When applying a tire dressing, always wipe off any overspray from all painted surfaces on the vehicle.

Wheels and Trim — Aluminum or Chrome Use a soft, clean cloth with mild soap and water to clean the wheels. After rinsing thoroughly with clean water, dry with a soft, clean towel. A wax may then be applied.

Vehicle Care

10-83

{ Caution

Chrome wheels and other chrome trim may be damaged if the vehicle is not washed after driving on roads that have been sprayed with magnesium, calcium, or sodium chloride. These chlorides are used on roads for conditions such as ice and dust. Always wash the chrome with soap and water after exposure.

{ Caution

To avoid surface damage, do not use strong soaps, chemicals, abrasive polishes, cleaners, brushes, or cleaners that contain acid on aluminum or chrome-plated wheels. Use only approved cleaners. Also, never drive a vehicle with aluminum or chrome-plated wheels through an (Continued)

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10-84

Vehicle Care

Caution (Continued)

automatic car wash that uses silicone carbide tire cleaning brushes. Damage could occur and the repairs would not be covered by the vehicle warranty.

Steering, Suspension, and Chassis Components Visually inspect steering, suspension, and chassis components for damaged, loose, or missing parts or signs of wear at least once a year. Inspect power steering for proper hook-up, binding, leaks, cracks, chafing, etc. Visually check constant velocity joint boots and axle seals for leaks. For 2500/3500 Series vehicles, at least every other engine oil change lubricate the upper and lower control arm ball joints.

For 2500/3500 Series vehicles equipped with steering linkage, at least every other engine oil change lubricate the tie rod ball joints, idler arm pivot shaft bearings, idler arm socket, and pitman arm socket.

{ Caution

Lubrication of applicable Steering/ Suspension points should not be done unless temperature is -12°C (10°F) or higher, or damage could result.

Body Component Lubrication Lubricate all key lock cylinders, hood hinges, liftgate hinges, and the fuel door hinge unless the components are plastic. Applying silicone grease on weatherstrips with a clean cloth will make them last longer, seal better, and not stick or squeak.

Underbody Maintenance At least twice a year, Spring and Fall, use plain water to flush dirt and debris from the vehicle's underbody. Your dealer or an underbody car washing system can do this. If not removed, rust and corrosion can develop. Sheet Metal Damage If the vehicle is damaged and requires sheet metal repair or replacement, make sure the body repair shop applies anti-corrosion material to parts repaired or replaced to restore corrosion protection. Original manufacturer replacement parts will provide the corrosion protection while maintaining the vehicle warranty. Finish Damage Quickly repair minor chips and scratches with touch-up materials available from your dealer to avoid

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corrosion. Larger areas of finish damage can be corrected in your dealer's body and paint shop. Chemical Paint Spotting Airborne pollutants can fall upon and attack painted vehicle surfaces causing blotchy, ring-shaped discolorations, and small, irregular dark spots etched into the paint surface. See “Finish Care” previously in this section.

Interior Care To prevent dirt particle abrasions, regularly clean the vehicle's interior. Immediately remove any soils. Note that newspapers or dark garments that can transfer color to home furnishings can also permanently transfer color to the vehicle's interior. Use a soft bristle brush to remove dust from knobs and crevices on the instrument cluster. Using a mild soap solution, immediately remove

hand lotions, sunscreen, and insect repellent from all interior surfaces or permanent damage may result. Your dealer may have products for cleaning the interior. Use cleaners specifically designed for the surfaces being cleaned to prevent permanent damage. Apply all cleaners directly to the cleaning cloth. Do not spray cleaners directly on any switches or controls. Cleaners should be removed quickly. Never allow cleaners to remain on the surface being cleaned for extended periods of time. Cleaners may contain solvents that can become concentrated in the interior. Before using cleaners, read and adhere to all safety instructions on the label. While cleaning the interior, maintain adequate ventilation by opening the doors and windows.

Vehicle Care

10-85

To prevent damage, do not clean the interior using the following cleaners or techniques: . Never use a razor or any other

sharp object to remove a soil from any interior surface.

. Never use a brush with stiff

bristles.

. Never rub any surface

aggressively or with excessive pressure.

. Do not use laundry detergents or

dishwashing soaps with degreasers. For liquid cleaners, use approximately 20 drops per 3.8 L (1 gal) of water. A concentrated soap solution will leave a residue that creates streaks and attracts dirt. Do not use solutions that contain strong or caustic soap.

. Do not heavily saturate the upholstery when cleaning.

. Do not use solvents or cleaners

containing solvents.

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10-86

Vehicle Care

Interior Glass To clean, use a terry cloth fabric dampened with water. Wipe droplets left behind with a clean dry cloth. Commercial glass cleaners may be used, if necessary, after cleaning the interior glass with plain water.

{ Caution

To prevent scratching, never use abrasive cleaners on automotive glass. Abrasive cleaners or aggressive cleaning may damage the rear window defogger.

Cleaning the windshield with water during the first three to six months of ownership will reduce tendency to fog. Speaker Covers Vacuum around a speaker cover gently, so that the speaker will not be damaged. Clean spots with just water and mild soap.

Coated Moldings Coated moldings should be cleaned. . When lightly soiled, wipe with a

sponge or soft lint-free cloth dampened with water.

. When heavily soiled, use warm

soapy water.

Fabric/Carpet/Suede Start by vacuuming the surface using a soft brush attachment. If a rotating brush attachment is being used during vacuuming, only use it on the floor carpet. Before cleaning, gently remove as much of the soil as possible using one of the following techniques: . Gently blot liquids with a paper towel. Continue blotting until no more soil can be removed. For solid soils, remove as much as possible prior to vacuuming.

To clean: 1. Saturate a clean lint-free colorfast cloth with water. Microfiber cloth is recommended to prevent lint transfer to the fabric or carpet.

2. Remove excess moisture by

gently wringing until water does not drip from the cleaning cloth. 3. Start on the outside edge of the

soil and gently rub toward the center. Rotate the cleaning cloth to a clean area frequently to prevent forcing the soil in to the fabric.

4. Continue gently rubbing the soiled area until there is no longer any color transfer from the soil to the cleaning cloth. If the soil is not completely removed, use a mild soap solution followed only by plain water.

5.

If the soil is not completely removed, it may be necessary to use a commercial upholstery

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cleaner or spot lifter. Test a small hidden area for colorfastness before using a commercial upholstery cleaner or spot lifter. If ring formation occurs, clean the entire fabric or carpet. Following the cleaning process, a paper towel can be used to blot excess moisture. Cleaning High Gloss Surfaces and Vehicle Information and Radio Displays For vehicles with high gloss surfaces or vehicle displays, use a microfiber cloth to wipe surfaces. Before wiping the surface with the microfiber cloth, use a soft bristle brush to remove dirt that could scratch the surface. Then use the microfiber cloth by gently rubbing to clean. Never use window cleaners or solvents. Periodically hand wash the microfiber cloth separately, using mild soap. Do not use bleach or fabric softener. Rinse thoroughly and air dry before next use.

{ Caution

Do not attach a device with a suction cup to the display. This may cause damage and would not be covered by the warranty.

Instrument Panel, Leather, Vinyl, Other Plastic Surfaces, Low Gloss Paint Surfaces and Natural Open Pore Wood Surfaces Use a soft microfiber cloth dampened with water to remove dust and loose dirt. For a more thorough cleaning, use a soft microfiber cloth dampened with a mild soap solution.

{ Caution

Soaking or saturating leather, especially perforated leather, as well as other interior surfaces,

(Continued)

Vehicle Care

10-87

Caution (Continued)

may cause permanent damage. Wipe excess moisture from these surfaces after cleaning and allow them to dry naturally. Never use heat, steam, spot lifters, or spot removers. Do not use cleaners that contain silicone or wax-based products. Cleaners containing these solvents can permanently change the appearance and feel of leather or soft trim and are not recommended.

Do not use cleaners that increase gloss, especially on the instrument panel. Reflected glare can decrease visibility through the windshield under certain conditions.

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. Use the floor mat with the

correct side up. Do not turn it over.

. Do not place anything on top of

the driver side floor mat.

. Use only a single floor mat on

the driver side.

. Do not place one floor mat on

top of another.

10-88

Vehicle Care

{ Caution

Use of air fresheners may cause permanent damage to plastics and painted surfaces. If an air freshener comes in contact with any plastic or painted surface in the vehicle, blot immediately and clean with a soft cloth dampened with a mild soap solution. Damage caused by air fresheners would not be covered by the vehicle warranty.

Care of Safety Belts Keep belts clean and dry. { Warning

Do not bleach or dye safety belts. It may severely weaken them. In a crash, they might not be able to provide adequate protection. Clean safety belts only with mild soap and lukewarm water.

Floor Mats

{ Warning

If a floor mat is the wrong size or is not properly installed, it can interfere with the pedals. Interference with the pedals can cause unintended acceleration and/or increased stopping distance which can cause a crash and injury. Make sure the floor mat does not interfere with the pedals.

Use the following guidelines for proper floor mat usage.

The original equipment floor mats were designed for the vehicle. If the floor mats need replacing, it is recommended that GM certified floor mats be purchased. Non-GM floor mats may not fit properly and may interfere with the pedals. Always check that the floor mats do not interfere with the pedals.

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Service and Maintenance

General Information

General Information . . . . . . . . . . 11-1

Maintenance Schedule

Maintenance Schedule . . . . . . . 11-3

Special Application Services

Special Application

Services . . . . . . . . . . . . . . . . . . . . 11-7

Additional Maintenance and Care

Additional Maintenance

and Care . . . . . . . . . . . . . . . . . . . 11-7

Recommended Fluids

Recommended Fluids and

Lubricants . . . . . . . . . . . . . . . . . 11-11

Maintenance Replacement

Parts . . . . . . . . . . . . . . . . . . . . . . 11-13

Maintenance Records

Maintenance Records . . . . . . 11-14

Service and Maintenance

11-1

General Information This maintenance section applies to vehicles with a gasoline engine. For diesel engine vehicles, see the maintenance schedule section in the Duramax diesel supplement. Your vehicle is an important investment. This section describes the required maintenance for the vehicle. Follow this schedule to help protect against major repair expenses resulting from neglect or inadequate maintenance. It may also help to maintain the value of the vehicle if it is sold. It is the responsibility of the owner to have all required maintenance performed. Your dealer has trained technicians who can perform required maintenance using genuine replacement parts. They have up-to-date tools and equipment for fast and accurate diagnostics. Many dealers have extended evening and Saturday hours, courtesy

transportation, and online scheduling to assist with service needs. Your dealer recognizes the importance of providing competitively priced maintenance and repair services. With trained technicians, the dealer is the place for routine maintenance such as oil changes and tire rotations and additional maintenance items like tires, brakes, batteries, and wiper blades.

{ Caution

Damage caused by improper maintenance can lead to costly repairs and may not be covered by the vehicle warranty. Maintenance intervals, checks, inspections, recommended fluids, and lubricants are important to keep the vehicle in good working condition.

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11-2

Service and Maintenance

The Tire Rotation and Required Services are the responsibility of the vehicle owner. It is recommended to have your dealer perform these services every 12 000 km/7,500 mi. Proper vehicle maintenance helps to keep the vehicle in good working condition, improves fuel economy, and reduces vehicle emissions. Because of the way people use vehicles, maintenance needs vary. There may need to be more frequent checks and services.

Normal Service All maintenance services, including those listed under Additional Required Services, are for vehicles that: . Carry passengers and cargo within recommended limits on the Tire and Loading Information label. See Vehicle Load Limits on page 9-9.

. Are driven on reasonable road

surfaces within legal driving limits.

. Use the recommended fuel. See

Fuel on page 9-39.

Severe Service In addition to the normal service schedule, some vehicles require service more often. Severe service is for vehicles that are: . Mainly driven in heavy city traffic

in hot weather.

. Mainly driven in hilly or

mountainous terrain. Frequently towing a trailer.

. Used for high-speed or

competitive driving.

. Used for taxi, police, or delivery

service.

{ Warning

Performing maintenance work can be dangerous and can cause serious injury. Perform maintenance work only if the required information, proper tools, and equipment are available. If they are not, see your dealer to have a trained technician do the work. See Doing Your Own Service Work on page 10-3.

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Service and Maintenance

11-3

Maintenance Schedule

Owner Checks and Services

At Each Fuel Stop . Check the engine oil level. See

Engine Oil on page 10-6.

Once a Month . Check the tire inflation

pressures. See Tire Pressure on page 10-50. Inspect the tires for wear. See Tire Inspection on page 10-56.

. Check the windshield washer

fluid level. See Washer Fluid on page 10-21.

Engine Oil Change When the CHANGE ENGINE OIL SOON message displays, have the engine oil and filter changed within the next 1 000 km/600 mi. If driven under the best conditions, the engine oil life system may not indicate the need for vehicle service for up to a year. The engine oil and filter must be changed at least once a year and the oil life system must be reset. Your trained dealer technician can perform this work. If the engine oil life system is reset accidentally, service the vehicle within 5 000 km/3,000 mi since the last service. Reset the oil life system when the oil is changed. See Engine Oil Life System on page 10-8.

Tire Rotation and Required Services Every 12 000 km/ 7,500 mi Rotate the tires, if recommended for the vehicle, and perform the following services. See Tire Rotation on page 10-56. . Check engine oil level and oil

life percentage. If needed, change engine oil and filter, and reset oil life system. See Engine Oil on page 10-6 and Engine Oil Life System on page 10-8.

. Check engine coolant level. See Engine Coolant on page 10-14. . Check windshield washer fluid

level. See Washer Fluid on page 10-21.

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11-4

Service and Maintenance

. Visually inspect windshield wiper

. Check restraint system

. Check parking brake and

blades for wear, cracking, or contamination. See Exterior Care on page 10-80. Replace worn or damaged wiper blades. See Wiper Blade Replacement on page 10-28.

. Check tire inflation pressures.

See Tire Pressure on page 10-50. Inspect tire wear. See Tire Inspection on page 10-56.

. Visually check for fluid leaks.

Inspect engine air cleaner filter. See Engine Air Cleaner/Filter on page 10-12. Inspect brake system.

. Visually inspect steering, suspension, and chassis components for damaged, loose, or missing parts or signs of wear. See Exterior Care on page 10-80.

components. See Safety System Check on page 3-16.

. Visually inspect fuel system for

damage or leaks.

. Visually inspect exhaust system

and nearby heat shields for loose or damaged parts. Lubricate body components. See Exterior Care on page 10-80.

. Check starter switch. See Starter

Switch Check on page 10-26. . Check automatic transmission shift lock control function. See Automatic Transmission Shift Lock Control Function Check on page 10-27.

. Check ignition transmission lock.

See Ignition Transmission Lock Check on page 10-27.

automatic transmission park mechanism. See Park Brake and P (Park) Mechanism Check on page 10-27.

. Check accelerator pedal for

damage, high effort, or binding. Replace if needed.

. Visually inspect gas strut for

signs of wear, cracks, or other damage. Check the hold open ability of the strut. See your dealer if service is required. Lubricate the steering linkage (greasable joints) on 2500/3500
series vehicles. See Normal and Severe Maintenance Schedules.

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Service and Maintenance

11-5

Maintenance Schedule Additional Required Services - Normal

Rotate tires and perform Required Services. Check engine oil level and oil life percentage. Change engine oil and filter, if needed. Lubricate the steering linkage (6).

Inspect evaporative control system. (1)

Replace engine air cleaner filter. (2)

Replace spark plugs. Inspect spark plug wires.

Drain and fill engine cooling system. (3)

Visually inspect accessory drive belts. (4)

Replace brake fluid. (5)

@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

Footnotes — Maintenance Schedule Additional Required Services - Normal (1) Check all fuel and vapor lines and hoses for proper hook-up, routing, and condition. (2) Or every four years, whichever comes first.

(3) Or every five years, whichever comes first. See Cooling System on page 10-14. (4) Or every 10 years, whichever comes first. Inspect for fraying, excessive cracking, or damage; replace, if needed.

(5) Or every 10 years, whichever comes first. (6) 2500/3500 series vehicles only. For severe commercial use vehicles, see Special Application Services on page 11-7.

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11-6

Service and Maintenance

Maintenance Schedule Additional Required Services - Severe

Rotate tires and perform Required Services. Check engine oil level and oil life percentage. Change engine oil and filter, if needed. Lubricate the steering linkage (7).

Inspect evaporative control system. (1)

Replace engine air cleaner filter. (2)

Change automatic transmission fluid and filter.

Change transfer case fluid, if equipped with AWD. (3)

Replace spark plugs. Inspect spark plug wires.

Drain and fill engine cooling system. (4)

Visually inspect accessory drive belts. (5)

Replace brake fluid. (6)

@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

Footnotes — Maintenance Schedule Additional Required Services - Severe (1) Check all fuel and vapor lines and hoses for proper hook-up, routing, and condition.

(2) Or every four years, whichever comes first. (3) Do not directly power wash the transfer case output seals. High pressure water can overcome the seals and contaminate the transfer

case fluid. Contaminated fluid will decrease the life of the transfer case and should be replaced. (4) Or every five years, whichever comes first. See Cooling System on page 10-14.

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(5) Or every 10 years, whichever comes first. Inspect for fraying, excessive cracking, or damage; replace, if needed. (6) Or every 10 years, whichever comes first. (7) 2500/3500 series vehicles only. For severe commercial use vehicles, see Special Application Services on page 11-7.

Service and Maintenance

11-7

Special Application Services . Vehicles with Dual Wheels:

Check dual wheel nut torque at 160, 1 600 and 10 000 km (100, 1,000 and 6,000 mi) of driving. Repeat this service whenever a tire/wheel is serviced or removed.

. Severe Commercial Use

Vehicles Only: Lubricate chassis components every 5 000 km/ 3,000 mi.

. Have underbody flushing service

performed. See “Underbody Maintenance” in Exterior Care on page 10-80.

Additional Maintenance and Care Your vehicle is an important investment and caring for it properly may help to avoid future costly repairs. To maintain vehicle performance, additional maintenance services may be required. It is recommended that your dealer perform these services — their trained dealer technicians know your vehicle best. Your dealer can also perform a thorough assessment with a multi-point inspection to recommend when your vehicle may need attention. The following list is intended to explain the services and conditions to look for that may indicate services are required.

Chevrolet Express Owner Manual (GMNA-Localizing-U.S./Canada/Mexico- 7707481) - 2015 - CRC - 4/30/14

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11-8

Service and Maintenance

Battery The battery supplies power to start the engine and operate any additional electrical accessories.

To avoid break-down or failure to start the vehicle, maintain a battery with full cranking power. Trained dealer technicians have the diagnostic equipment to test the battery and ensure that the connections and cables are corrosion-free.

Belts . Belts may need replacing if they

squeak or show signs of cracking or splitting. Trained dealer technicians have access to tools and equipment to inspect the belts and recommend adjustment or replacement when necessary.

Brakes Brakes stop the vehicle and are crucial to safe driving. . Signs of brake wear may include

chirping, grinding, or squealing noises, or difficulty stopping. Trained dealer technicians have access to tools and equipment to inspect the brakes and recommend quality parts engineered for the vehicle.

Fluids Proper fluid levels and approved fluids protect the vehicle’s systems and components. See Recommended Fluids and Lubricants on page 11-11 for GM approved fluids. . Engine oil and windshield

washer fluid levels should be checked at every fuel fill.

Instrument cluster lights may come on to indicate that fluids may be low and need to be filled.

Hoses Hoses transport fluids and should be regularly inspected to ensure that there are no cracks or leaks. With a multi-point inspection, your dealer can inspect the hoses and advise if replacement is needed.

Lamps Properly working headlamps, taillamps, and brake lamps are important to see and be seen on the road. . Signs that the headlamps need

attention include dimming, failure to light, cracking, or damage. The brake lamps need to be checked periodically to ensure that they light when braking. . With a multi-point inspection,

your dealer can check the lamps and note any concerns.

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Service and Maintenance

11-9

Shocks and Struts Shocks and struts help aid in control for a smoother ride. . Signs of wear may include

steering wheel vibration, bounce/ sway while braking, longer stopping distance, or uneven tire wear.

. As part of the multi-point inspection, trained dealer technicians can visually inspect the shocks and struts for signs of leaking, blown seals, or damage, and can advise when service is needed.

Tires Tires need to be properly inflated, rotated, and balanced. Maintaining the tires can save money and fuel, and can reduce the risk of tire failure. . Signs that the tires need to be replaced include three or more visible treadwear indicators; cord or fabric showing through the rubber; cracks or cuts in the tread or sidewall; or a bulge or split in the tire.

Trained dealer technicians can inspect and recommend the right tires. Your dealer can also provide tire/wheel balancing services to ensure smooth vehicle operation at all speeds. Your dealer sells and services name brand tires.

Vehicle Care To help keep the vehicle looking like new, vehicle care products are available from your dealer. For information on how to clean and protect the vehicle’s interior and exterior, see Interior Care on page 10-85 and Exterior Care on page 10-80.

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11-10

Service and Maintenance

Wheel Alignment Wheel alignment is critical for ensuring that the tires deliver optimal wear and performance. . Signs that the alignment may

need to be adjusted include pulling, improper vehicle handling, or unusual tire wear.

. Your dealer has the required equipment to ensure proper wheel alignment.

Windshield For safety, appearance, and the best viewing, keep the windshield clean and clear. . Signs of damage include

scratches, cracks, and chips. Trained dealer technicians can inspect the windshield and recommend proper replacement if needed.

Wiper Blades Wiper blades need to be cleaned and kept in good condition to provide a clear view. . Signs of wear include streaking, skipping across the windshield, and worn or split rubber. Trained dealer technicians can check the wiper blades and replace them when needed.

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Service and Maintenance

11-11

Recommended Fluids

Recommended Fluids and Lubricants This maintenance section applies to vehicles with a gasoline engine. If the vehicle has a diesel engine, see the maintenance schedule section in the Duramax diesel supplement. Fluids and lubricants identified below by name, part number, or specification can be obtained from your dealer.

Usage

Engine Oil

Engine Coolant

Hydraulic Brake System

Windshield Washer

Parking Brake Cable Guides

Power Steering System Automatic Transmission

Fluid/Lubricant

Use only engine oil licensed to the dexos1® specification of the proper SAE viscosity grade. ACDelco dexos1 Synthetic Blend is recommended. See Engine Oil on page 10-6. 50/50 mixture of clean, drinkable water and use only DEX-COOL® Coolant. See Engine Coolant on page 10-14. DOT 3 Hydraulic Brake Fluid (GM Part No. 19299818, in Canada 19299819). Automotive windshield washer fluid that meets regional freeze protection requirements. Chassis Lubricant (GM Part No. 12377985, in Canada 88901242) or lubricant meeting requirements of NLGI #2, Category LB or GC-LB. GM Power Steering Fluid (GM Part No. 89021185, in Canada 89021186). DEXRON®-VI Automatic Transmission Fluid.

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11-12

Service and Maintenance

Usage

Key Lock Cylinders

Chassis Lubrication

Front Wheel Bearings

Front and Rear Axle

Transfer Case Hood Hinges

Weatherstrip Conditioning

Weatherstrip Squeaks

Fluid/Lubricant

Multi-Purpose Lubricant, Superlube (GM Part No. 12346241, in Canada 10953474). Chassis Lubricant (GM Part No. 12377985, in Canada 88901242) or lubricant meeting requirements of NLGI #2, Category LB or GC-LB. Wheel bearing lubricant meeting requirements of NLGI #2, Category GC or GC-LB (GM Part No. 1051344, in Canada 993037). SAE 75W-90 Synthetic Axle Lubricant (GM Part No. 88900401, in Canada 89021678). DEXRON®-VI Automatic Transmission Fluid. Multi-Purpose Lubricant, Superlube (GM Part No. 12346241, in Canada 10953474). Weatherstrip Lubricant (GM Part No. 3634770, in Canada 10953518) or Dielectric Silicone Grease (GM Part No. 12345579, in Canada 10953481). Synthetic Grease with Teflon, Superlube (GM Part No. 12371287, in Canada 10953437).

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Service and Maintenance

11-13

Maintenance Replacement Parts If the vehicle has the Duramax diesel engine, see the Duramax diesel supplement. Replacement parts identified below by name, part number, or specification can be obtained from your dealer.

Part

GM Part Number

ACDelco Part Number

Engine Air Cleaner/Filter Engine Oil Filter Spark Plugs Wiper Blades – 56.0 cm (22 in)