Celebrity V6-173 2.8L (1989)
Valve Body: All Technical Service Bulletins
A/T - Delayed `R' to `D' In Cold Operating Conditions
Number:
89-251-7A
Section:
7A
Date:
September 1989
Corporate Bulletin No.: 977134
Subject:
DELAYED REVERSE TO DRIVE IN COLD OPERATING CONDITIONS
Model and Year:
1989 A, J, L CARS WITH 125C/3T40 AND A-1/3 T40-A TRANSMISSIONS
Figure 1
TO:
ALL CHEVROLET DEALERS
New cross drilled holes (larger in diameter) drilled through the Manual Valve and a second Cold Window has been added to the Thermal Element. These
changes increase the rate of fluid exhausted through the Manual Valve during cold operating conditions, which reduces the potential for delayed
engagement when shifting from Reverse to Drive (See figure no. 1).
June 12, 1989, (Julian Date 163), the new Manual Valve and Thermal Orifice Assembly went into production.
The new Manual Valve and Thermal Element assembly can be used on all past models. If replacement of the Manual Valve is necessary, the new Manual
Valve (cross drilled) and Thermal Orifice must be used together.
When ordering a new Manual Valve and Thermal Orifice, refer to the following number:
Part Number
Description