New SRTA model to correct a harsh 3-2 downshift in hot outside temperatures for the 3.1L (VIN V) turbo W-Car. The replacement of the existing transaxle with the SRTA model listed under "SERVICE PARTS INFORMATION" is the only way to correct the harsh 3-2 downshift concern.
Reference Figure 1 for correct vacuum line connections.
SERVICE PARTS INFORMATION:
Transaxle Part Number Description Model Year Model Usage
8676915 Transaxle - SRTA 1990 OLAH, OYRH
Parts are currently available from CANSPO.
Model OYRH is the replacement for the OLAH model.
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.