GM Service Manual Online
For 1990-2009 cars only

Condition

Action

DEFINITION: Vibration while driving.

    • Lack of automatic transmission fluid (ATF)
    • Burnt ATF
    • Incorrect ATF
    • ATF contaminated with engine coolant

Perform an ATF fluid inspection and correct as necessary. Refer to Transmission Fluid Check .

Engine and/or Transaxle mounts

Inspect the engine and/or transaxle for loose, damaged or missing mounts. Repair as necessary.

Drivetrain "grounded out" to the vehicle chassis

Inspect the compete drivetrain for signs of physical contact. Correct as necessary.

Drive Axles

Inspect both drive axles for proper installation and/or damage. Repair as necessary.

Exhaust System

Inspect the complete exhaust system for proper installation and/or damage.

Tires

Inspect all four tires for signs of cupping or irregular wear pattern.

Engine Flexplate

Inspect the flexplate for damage, excessive run-out. Correct as necessary.

Base Engine

Inspect the engine for any base level concerns. Repair as necessary.

Internal transaxle concern

Remove the transaxle assembly and disassemble. Repair as necessary.