GM Service Manual Online
For 1990-2009 cars only

Listed below are inspections and services which should be performed at least twice a year (for instance, each spring and fall). A dealer's service department or qualified service center should perform these jobs. All repairs should be completed at once.

Steering and Suspension Inspection

Inspect the front and rear suspension and the steering system for the following conditions:

    • Damaged parts
    • Loose parts
    • Missing parts
    • Signs of wear
    • Lack of lubrication

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

    • Proper hook-up
    • Binding
    • Leaks
    • Cracks
    • Chafing, etc.

Exhaust System Inspection

Inspect the complete exhaust system. Inspect the body near the exhaust system.

Inspect for broken, damaged, missing or out-of-position parts as well as the following conditions:

    • Open seams
    • Holes
    • Loose connections
    • Other conditions which could cause a heat build-up in the floor pan
    • Other conditions which could let exhaust fumes into the vehicle.

Refer to Exhaust Leakage - Not OBD II

Engine Cooling System Inspection

Inspect the hoses and replace the hoses if the hoses exhibit any of the following conditions:

    • Cracked hoses
    • Swollen hoses
    • Deteriorated hoses

Inspect the following components and replace the components as needed:

    • Pipes
    • Fittings
    • Clamps

Clean the outside of the radiator and the air conditioning condenser. To help ensure the proper operation, a pressure test of the cooling system and pressure cap is recommended at least once a year.

Throttle System Inspection

Inspect the throttle system for the following conditions:

    • Interference
    • Binding
    • Damaged parts
    • Missing parts

Replace any components that have high effort or excessive wear. Do not lubricate the following components:

    • Accelerator cables
    • Cruise control cables

Drive Axle Service

Inspect the rear/front axle fluid level and add fluid as needed. Inspect the constant velocity joints and the axle seals for leaking.

Transfer Case (Four - Wheel Drive) Inspection

Every 12 months or at oil change intervals, inspect the front axle and the transfer case and add lubricant when necessary. On the manual shift transfer case, oil the control lever pivot point. Inspect the vent hose at the transfer case for kinks and proper installation. More frequent lubrication may be required on off-road use.

Brake System Inspection

Inspect the complete system. Inspect the brake lines and the brake hoses for proper hook-up, binding, leaks, cracks, chafing, etc. Inspect the disc brake pads for wear and the rotors for surface condition. Also inspect the drum brake linings for wear and cracks. Inspect other brake parts, including the following components:

    • The drums
    • The wheel cylinders
    • The calipers
    • The park brake
    • Other parts

Inspect the park brake adjustment. The brakes may need to be inspected more frequently if driving habits or conditions result in frequent braking.