GM Service Manual Online
For 1990-2009 cars only

Shift Lever Indicates Wrong Gear

Checks

Causes

Manual Valve (340)

Not engauged to detent lever

Detent Roller Pin (63)

Missing or damaged

Detent Roller (63)

Broken or disconnected

Detent Spring (63)

Broken or disconnected

Manual Valve Link (89)

Loose or missing

Manual Shaft (84)

Flats not parallel

Indicator Linkage

Misadjusted