Bonneville V6-231 Fluid Maintenance - A/T Fluid+ Paint Flakes & Corrosion
Fluid - A/T: All Technical Service Bulletins
A/T - Paint Flakes In Fluid/Corroded Fill Tube
Bulletin Number:
88-7-43A
Reference Number:
877141R
Publish Date:
3/89
Revises:
88-7-43
Date:
12/01/88
Subject:
EVIDENCE OF PAINT FLAKES IN TRANS FLUID AND/OR CORRODED FILL TUBES AND FLUID LEVEL INDICATORS (NEW
PART)
Models
Affected:
1988 6000 AND BONNEVILLE
This bulletin has been revised to add 6000 models with THM-125 and 440-T4 transaxles.
TRANSAXLE MODELS:
THM-125C - CTC, LSC, PDC, PZC THM-440-T4 BJH,BKH,BTH,BRH,BYH,CFH,CMH,CWH,CXH,FBH,FCH,FJH,FSH
BULLETIN COVERS:
Black paint flakes may be found in the transaxle fluid, bottom pan, fluid level indicator and filter assembly as the result of paint peeling from inside the
transaxle fill tube. After the paint peels the unprotected areas of the fill tubes can corrode (interior and exterior), leaving corrosion on the fluid level
indicator and the fill tube.
The fill tube paints used on the interior and exterior of the tube may not withstand temperatures over 260 degrees Fahrenheit. Transaxle durability should
not be affected in vehicles equipped with these fill tubes, but paint flakes can cause filter clogging over a period of time.
DATE OF PRODUCTION CHANGE:
The suspect fill tubes may be found in the following vehicles produced between S.O.P. 1988 and October 17, 1987 (Julian Date 289).
6000 and Bonneville models - THM 440-T4 6000 models - THM 125C
SERVICE ACTION:
If vehicles are found with flaking paint fill tubes, they should be changed along with Transaxle Fluid, Filter and Fluid Level Indicator.
Use Labor Code T5181 (Labor Hours .9).
SERVICE MANUAL REFERENCE:
Refer to the On-Car Section of your Service manual whenever service of the Fluid Level Indicator and Fill Tube is necessary.
