M/T - Gear Selection Difficulties

Bulletin Number: 89-7-53
Reference Number: 937203
Publish Date: 4/90

Subject: MANUAL TRANSMISSION SHIFTING EFFORT (REPLACE SHIFT CONTROL LINKAGE)

Models

Affected: 1988-89 LEMANS W/1.6 AND MANUAL TRANSMISSION
Some of the subject vehicles may exhibit increased movement of shift control linkage resulting in gear selection difficulties and/or higher than normal shifting efforts into first, second or fifth gears.

A new P/N 90342949, linkage gear shift control, is available that has reduced compliance at the joints.

Part is currently available from GMSPO.

Corrective action for the described condition is to replace the shift control linkage and delete the fifth gear shift detent (5 speed only) following the procedures described and referencing the 1989 Service Manual.

Procedure:

1. Disconnect battery.

2. Install a 3/16" pin in the transmission (refer to page 7B1-10, Figure 8). This will lock the transmission in neutral in the 1-2 shift location.

3. Loosen the shift rod clamp bolt (refer to page 7B1-10, Figure 9).

4. Raise the gearshift boot at the shifter.

5. Pull shifter rearward to disconnect shift rod from linkage (at loosened clamp bolt).

6. Remove fifth gear detent from shifter (refer 7B1-5, Figure 4 - item 243) (if equipped).
7. Lubricate shift tube (refer 7B1-5, Figure 4 - item 241) at boot and bearing (items 240 and 241) using grease meeting GM 6031M requirements (GM P/N 1052492 or equivalent).

8. Remove the shift control linkage by removing pins 237 and 239 shown in Figure 21, page 7B2-13.

9. Install new shift linkage assembly. Ensure that the plastic boots (part of assembly) are aligned with the rods.

10. Following the shift linkage adjustment procedures (refer to page 7B1-10) adjust the linkage, tighten rod clamp bolt, remove 3/16 locking pin from transmission and install plug; test shifting mechanism.

Labor Operation Number: K1120

Labor Time : .8 Hour