K 1500 Truck 4WD V8-305 5.0L (1988)
Case: All Technical Service Bulletins
M/T - Fluid Leak Out the Vent
Number:
REISSUE 88-44
Section:
7B
Date:
October, 1987
SUBJECT:
FLUID LEAK OUT THE VENT
MODELS:
1988 C/K TRUCKS WITH HM-117 MANUAL TRANSMISSION (RPO M20)
THIS BULLETIN IS BEING REISSUED. ALL COPIES OF THE AUGUST 1987 88-44 SHOULD BE
DESTROYED.
FIGURE NO. 1 - HM-117 TRANSMISSION IDENTIFICATION INFORMATION RPO M20
A 1988 C/K truck with a HM-117 manual transmission may develop a fluid leak out the vent.
NOTE:
Figure No. 1 - Transmission Identification Information.
SERVICE ACTION:
The addition of a remote vent will prevent fluid from leaking out the cover vent. To repair, perform the following:
1.
Remove transmission (also transfer case if applicable).
^
If the model code on the I.D. tag is GGD or GGG refer to GMC campaign 88-C-03 or Chevrolet campaign 88-C-02.
NOTE:
PERFORMING THE CAMPAIGN WILL NOT CORRECT THE FLUID LEAK OUT THE VENT. The remote vent MUST be added.
2.
Remove existing vent.
