GM Service Manual Online
For 1990-2009 cars only

Condition

Action

Incorrect fluid level

Correct the fluid level. Refer to Transmission Fluid Check .

Plugged suction filter

Clean or replace the oil suction filter. Refer to Oil Pan Replacement .

Plugged cooler circuit filter

Replace the filter.

Excessive internal fluid leakage

    • Inspect the control module mounting bolts.
    • Inspect the lubrication valve and spring.
    • Inspect the converter housing to separator plate gasket.

Cooler lines restricted or leaking

Inspect for kinks and leakage. Reroute or replace lines as necessary.

Lubrication regulator valve sticking

Clean or replace the regulator valve.

Converter relief valve sticking

Clean or replace the converter relief valve.

Cooler plugged

Clean or replace the cooler.

Faulty gauge

Repair or replace the gauge.