ERRATIC, HARSH OR SLIP SHIFTS (REPLACE CONTROL BODY ASSY.). Saturn Saturn 1991

For 1990-2009 cars

# ERRATIC, HARSH OR SLIP SHIFTS (REPLACE CONTROL BODY ASSY.)

#### SUBJECT: Erratic Shifts, Harsh Shifts, and/or Slip Shifts (Replace Transaxle Control Body Assembly)

#### MODELS AFFECTED: Some 1991 Saturns with Automatic Transaxles.

CONDITION: Some 1991 Saturns, within the following VIN ranges, may exhibit erratic shifts, harsh shifts, slip shifts, skipping gears or not upshifting.

MODEL VIN RANGE SL1, SL2 MZ108285 to MZ129254 SC MZ103171 to MZ103724 MZ108362 to MZ128715

CAUSE: These conditions may be caused by a chipped ceramic seat, inside the transaxle actuator. The resultant ceramic chip coming off the seat can stick in the actuator or some other fluid passage in the valvebody causing erratic shifts and/or poor shift quality.

CORRECTIVE ACTION: If a vehicle displays any of the subject symptoms and falls within the VIN ranges given, replace the control body assembly (valvebody). Refer to "Valvebody" in the "Automatic Transaxle In-Vehicle Repair" section of the 'Automatic Transaxle Service Manual."

After replacing the control body assembly, verify that the condition has been corrected. If the condition is still present, follow diagnostic procedures located in the "Automatic Transaxle Service Manual."

PARTS REQUIREMENTS: 21002273 Control Body Asm - A/Trans 21001683 Gasket - Cover to Case

CLAIM To receive credit for this repair, submit a claim through INFORMATION: the Saturn Dealer System as follows:

Labor Case Operation Type Description Code Time ---- ----------- --------- ---- VW Remove and Replace Transaxle T9570 1.7 hrs Control Body Assembly

For vehicle equipped with antilock brakes, add 0.2 hrs to claim.

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.