M/T - Hops Out of Gear, High Shift Effort, or Noises

90pontiac10
Bulletin Number: 90-7-38
Reference Number: 937205
Publish Date: 5/90
SHIFTABILITY CONCERNS ON ISUZU
Subject:
5-SPD. MANUAL TRANSAXLE - RPO MK7 (NEW SHIFTER BOOT)

Models
Affected: 1983-90 SUNBIRD MODELS
Condition: Owners of some 1983-90 Sunbird models equipped with ISUZU 5-speed manual transaxles may comment about one or more of the following:

1. Transaxle hopping out of gear.

2. Higher than normal shift efforts.

3. Shifter rattle or buzz.

These conditions may be more apparent during cold weather operation.

Cause: Any of these conditions may be the result of the shift boot being to stiff.

Correction: To repair any of the above conditions a new shifter boot should be installed (P/N 22553175). The new shift boot is made of a more pliable material.

If the new boot does not satisfactorily fix the customer concern, consult previous bulletins on these subjects.

FIGURE 1:

Service Parts: The new boot will only back service vehicles which are equipped with a boot identical to the one shown in Figure 1.
Boot, Shifter P/N 22553175

Part is currently available from GMSPO.

Use applicable labor operation and time.