For 1990-2009 cars

# SERVICE MANUAL UPDATE INFORMATION/ THM 440-T4

#### MODELS/YEARS: 1986 AND 1987 MODELS EQUIPPED WITH THM 440-T4 (ME9) TRANSAXLE

#### VEHICLE APPLICATIONS:

Cutlass Ciera, Delta 88, Ninety-Eight and Toronado

#### BULLETIN COVERS:

Updates to Chassis Service Manual information in the 1986 440-T4 Automatic Transaxle Unit Repair Section and 1987 440-T4 Automatic Transaxle Hydraulic Diagnosis and Unit Repair Sections.

Update the figures in your 1986 and 1987 Chassis Service Manuals with revisions provided in this bulletin (refer to the chart below).

#### SERVICE NOTES:

When checking line pressures on a THM 440-T4 transaxle, it is important to follow the steps as described in the preliminary check procedure in Figures 1 and 2. Using the T.V. cable to check maximum line pressures will not provide accurate readings.

#### REVISED SERVICE MANUAL INFORMATION

Bulletin Figure Model Figure Number Year Section Page Number ------ ---- ------- ---- ------ 1 1986 Automatic Transaxle Unit Repair 440-T4-5 4 2 1987 Hydraulic Diagnosis 440-T4-4 3 3 1987 Automatic Transaxle Unit Repair 440-T4-14 34 4 1987 Hydraulic Diagnosis 440-T4-3 2 5 1986 Automatic Transaxle Unit Repair 440-T4-69 79 5 1987 Automatic Transaxle Unit Repair 440-T4-52 79

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.