A/T - New Product Information

88buick15

Bulletin: 89-7125-2

Date: Nov '88

Ref. No.: 89-034-7125

Corp. Ref. No.: 877144
SUBJECT: NEW PRODUCT INFORMATION


MODELS AFFECTED: ALL 1989 VEHICLES EQUIPPED WITH A THM 125C (MD9) TRANSAXLE


BULLETIN COVERS:

Revised information for THM 125/125C transaxles in 1989 New Product Information

Manuals, Preliminary Service Manuals and Service Manuals printed prior to October, 1988. This information will be in Service Manuals printed after November, 1988.

FIGURE 1 - 1989 THM 125C SHIFT SPEED CHART:

FIGURE 2 - PRELIMINARY CHECK PROCEDURE:

FIGURE 3 - CONTROL VALVE AND OIL PUMP ASSEMBLY:

Refer to this bulletin when use of the following information is necessary:

Transaxle Diagnosis (Figure 1) 1989 THM 125C Shift Speed Chart Transaxle Diagnosis (Figure 2) Preliminary Check Procedure (Fluid Pressure Check) Unit Repair Section (Figure 3) Control Valve and Oil Pump Assembly.

In Figure 3, a new Valve Bore Plug (382) has been added to some THM 125/125C models.

Changes in the Preliminary Check Procedure and Shift Speed Chart are due to some THM 125/125C models which were dropped and new models that were added as follows:

Models Dropped Models Added

KFC, KKC, KMC, KXC, PDC BUC, BZC, CMC, CRC, HRC
PJC, PLC, PNC, RUC, THC PBS, TNC