GM Service Manual Online
For 1990-2009 cars only

Shift Lever Indicates Wrong Gear

Checks

Causes

Manual Valve

Not engaged to detent lever

Detent Roller Pin

Missing or damaged

Detent Roller

Broken or disconnected

Detent Spring

Broken or disconnected

Manual Valve Link

Loose or missing

Manual Shaft

Flats not parallel

Indicator Linkage

Misadjusted