S15/T15 2WD P/U V6-173 2.8L (1991)
Shifter M/T: All Technical Service Bulletins
M/T - Fifth Gear Whine, Revised Shift Lever & Boot
Group Ref.: Transmission
Bulletin No.: 367201
Date: April, 1994
SUBJECT:
5TH GEAR WHINE (INSTALL REVISED SHIFT LEVER AND BOOT)
MODELS:
1989-93 CHEVROLET AND GMC S TRUCKS WITH 2.8L OR 2.5L ENGINE (RPOs LL2, L38, LN8) AND MANUAL TRANSMISSION
THIS BULLETIN IS BEING REVISED TO INCLUDE SERVICE PARTS INFORMATION AND TO UPDATE THE PROCEDURE.
PREVIOUS DIVISIONAL PUBLICATION NUMBERS WERE:
DIVISION
BULLETIN NUMBER
CHEVROLET
93-172-7B
GMC TRUCK
93-7B-64
GM CANADA
93-7B-108
CONDITION:
Some owners may comment about a whine or a gear noise when the transmission is in the 5th gear position. The noise usually occurs at highway speeds.
CAUSE:
The audible noise is a result of the internal gearbox working noises being transferred and amplified through the shift lever.
CORRECTION:
To isolate the audible noise from being transferred into the interior of the truck, a revised shift lever and boot have been released.
SERVICE INFORMATION:
(Refer to Figure 1)
1. Remove the shift knob (5) and lock nut (6).
2. Remove screws (9) and retainer (10), if used.
3. Remove shift boot (8).
4. Remove the shift lever (7) and the lock nut (11). Hold the lock nut and unscrew the shift lever using the wrench slots (A).