For 1990-2009 cars

# TRANSMISSION BULLETIN SUMMARY LISTING

ALL MODELS

The Bulletin Summary Listing has been designed to allow the user a ready reference source of specific Hydra-matic automatic transmission technical information. The listing contains 1982 through 1986 model year bulletins cross-referenced by number that were issued from GM Divisions. The publication has been divided by transmission family (THM 125, 180C, 200C, 200-4R, etc.) into three sections for convenience and ease of use as follows:

#### Diagnosed Condition or Symptom Descriptions

Bulletins are categorized in this section by General Groups into main topic areas such as: "Leaks", "Noise", "Performance" and "Shifting". Each bulletin in these General Group areas is listed under specific headings titled: "Diagnosis or Symptom", "Model/Year", "Bulletin Numbers" and "Subject Summary".

#### Service Information and Repair Procedures

The General Groups in this section are classified by part name and include items such as: "Bearings and Washers", "Case", "Clutches and Bands", "Control Valve Components", "Drive Chain", "Oil Pump", "Shaft Assemblies" and "Torque Converter Components". The bulletins are listed under headings titled as those previously described except for "Diagnosis or Symptom".

#### New Parts

The General Groups in this section are also part name oriented in the same manner as the second section. This section also lists bulletins under the same specific headings as the second section with a column titled "Items" added.

(Please note that some bulletins may be cross-referenced and appear in more than one section depending on their content.)

Properly used, this listing will provide you with helpful technical information on Hydra-matic automatic transmissions should service become necessary. The Bulletin Summary Listing is being furnished in loose-leaf format so that it can be updated four times annually to keep it current with product refinements and service procedure changes.

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.