GM Service Manual Online
For 1990-2009 cars only

Condition

Action

DEFINITION: When shift lever is moved the transmission will not respond.

Park/neutral position switch (72)

    • Inspect the park/neutral position switch (72) for proper alignment.
    • Adjust the park/neutral position switch (72) for proper alignment.

Shift cable adjustment

    • Inspect shift cable to ensure transmission is shifting in the proper shift positions.
    • Adjust shift cable if out of adjustment.

Internal transmission failure

    • Disassemble the transmission and inspect the following:
       - Manual shift lever and the manual shift valve for proper operation
       - Broken gears or shafts
    • If failed components, replace transmission assembly.