This bulletin covers new part bracket bolts (712) which are longer in length. (Figure 1)
These new bolts went into production October 26, 1989 (Julian Date 9299) for all Windsor built HYDRA-MATIC 3T40 (THM 125C) transaxles and December 20, 1989 (Julian Date 9354) for all Willow Run built HYDRA-MATIC 3T40 (THM 125C) transaxles.
Implementation date for the HYDRA-MATIC 3T40-A (THM A-1) will be January 15, 1990 (Julian Date 9015).
Refer to the following part number when ordering these new bolts.
Part Number Description ----------- ----------- 11500918 Bolts, Park Bracket M8 x 1.25 x 25
Parts are currently available from GMSPO.
When servicing any HYDRA-MATIC 3T40 transaxle, refer to the (MD9) Automatic Transaxle Unit Repair Section of your service manual.
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.