S10/T10 P/U 2WD L4-151 2.5L (1988)
Shifter M/T: All Technical Service Bulletins
M/T - Shift Lever Vibration/Rattle In Third Gear
Number:
89-169-7B
Section:
7B
Date:
May, 1989
Subject:
THIRD GEAR SHIFT LEVER VIBRATION/RATTLE
Model and Year:
1986-89 S/T TRUCKS W/BORG WARNER FIVE SPEED MAN TRANSMISSION
Figure 1 - Identification Tag Explanation Chart
TO:
ALL CHEVROLET DEALERS
Some 1986-89 S/T Trucks may experience a shift lever vibration while the vehicle is in third gear. This condition may also be described as a rattle. The
vibration may be most prominent on a coast down (deceleration) while in third gear.
Production Change
A new design shift lever was put Into production during the 1989 model year. Vehicles which have the new design lever can be identified by the serial
number on the transmission identification tag. An example of the tag and its location on the transmission is shown in Figure 1. Vehicles with
transmission serial numbers equal to or higher than those given below have the new design lever.
Vehicle
Serial Number Breakpoint
T Series
21564