GM Service Manual Online
For 1990-2009 cars only

Condition

Action

DEFINITION: Transmission overheats

Low fluid level

Inspect for leaks and repair as necessary.

Incorrect fluid

Replace the fluid with the correct fluid

Fluid Filter (42) is restricted

    • Diagnose the cause for the filter restriction and repair as needed.
    • Replace the fluid filter (42) and fluid.

Restricted Oil Cooler Lines

    • Inspect for bent or kinked pipes
    • Inspect for pinched or kinked hoses
    • Inspect for cracks or signs of hose overheating that may cause delamination of the hose
    • Replace faulty oil cooler lines

Internal oil cooler restriction

Replace radiator assembly and fluid.