GM Service Manual Online
For 1990-2009 cars only

Listed below are inspections and services which should be performed at least twice a year. A dealer's service department or qualified service center should perform theses inspections. All repairs should be completed at once.

Steering and Suspension Inspection

Inspect the front and the rear suspension for the following:

    • Damaged parts
    • Loose or missing parts
    • Signs of wear or lack of lubrication

Inspect the power steering lines and the hoses for the following:

    • Proper hookup
    • Binding
    • Leaks
    • Cracks
    • Chafing, etc.

Exhaust System Inspection

Inspect the complete system. Inspect the body near the exhaust system. Look for broken, damaged, missing or out-of-position parts as well as open seams, holes, loose connections or other conditions which could cause a heat build-up in the floor pan or could let exhaust fumes into the vehicle. For exhaust system inspection diagnosis, refer to Exhaust System Inspection in Engine Exhaust.

Engine Cooling System Inspection

Inspect the hoses and have them replaced if they are cracked, swollen or deteriorated. Inspect all pipes, fittings and clamps; replace as needed. Clean the outside of the radiator and air conditioning condenser. To help ensure proper operation, a pressure test of the cooling system and pressure cap is recommended at least once a year.

Throttle System Inspection

Important: The accelerator and cruise control cables should not be lubricated under any condition. Throttle system components causing hesitation or sticking should be replaced. Inspect the following:

   • Missing parts such as retainers or clips.
   • Interference of the linkage or cable conduit to critical components such as fuel lines, brake lines, harness leads etc.
   • Proximity of the cable to the exhaust system and other heat sources: check for melting and/or discoloration.
   • Cable kinking. Avoid sharp bends of cables.
   • Clearance of the throttle system moving parts throughout their travel from other stationary components.
   • Damage of the components due to cable kinking, severe kinking, severe abrasion, misalignment, etc. If any of the above conditions exists, notify your dealer for a recommended rerouting, adjustment, or replacement.

Rear Axle Service

Check the gear lubricant level in the rear axle and add if needed. A fluid loss may indicate a problem. Check the axle and repair it if needed.

Brake System Inspection

Inspect the complete system.

Notice: A low brake fluid level can indicate worn disc brake pads which may need to be serviced. Also, if the brake system warning light stays on or comes on, something may be wrong with the brake system. If the anti-lock brake system warning light stays on or comes on, something may be wrong with the anti-lock brake system.

Inspect the brake lines and the hoses for the following:

    • Proper hookup
    • Binding
    • Leaks
    • Cracks
    • Chafing, etc.

Inspect the disc brake pads for wear and rotors for surface condition. Also inspect drum brake linings for wear and cracks. Inspect other brake parts, including drums, wheel cylinders, calipers, parking brake, etc. Check parking brake adjustment. You may need to have your brakes inspected more often if your driving habits or conditions result in frequent braking.