GM Service Manual Online
For 1990-2009 cars only

Checks

Cause

Manual Linkage (701-704)

Misadjusted

TV Cable

Misadjusted, unhooked, bound, or broken

Oil Level

Low

Governor (4) or Speed Sensor (4) (depending on model)

    â€¢ The cover is worn (9)
    â€¢ A thrust washer is missing (6)
    â€¢ The governor seal is worn or cut (7)
    â€¢ The governor spring is not seated (4)
    â€¢ The governor weights are binding on the pin (4)
    â€¢ A ball is missing (4)
    â€¢ The governor driven gear is stripped (4)

Intermediate Servo (128-137)

    â€¢ The apply pin is incorrect or sticking (129)
    â€¢ Seals are cut, damaged, or missing (128, 132, 134)
    â€¢ The piston is sticking or is damaged (133)
    â€¢ Porosity in the case servo bore (15)

Control Valve Assembly (21)

    â€¢ Valves are sticking
    â€¢ Spacer plate gaskets are leaking or are incorrectly installed (19, 20)

Valve Body Spacer (20)

    â€¢ The governor feed orifice to the 1-2 and 2-3 shift
         valve is plugged (316-323)
    â€¢ The drive to governor orifice is plugged

Intermediate Band (606)

Burned or worn

Case Cover (401)

    â€¢ Porosity
    â€¢ Undrilled holes
    â€¢ Missing cup plugs
    â€¢ The second oil passage is leaking

Case (15)

    â€¢ Leaks in the governor passage or pipe (138)
    â€¢ Leaks in the second oil passage