M/T - Jumps Out Of Third Gear
File In Section: 07 - Transmission/TransaxleBulletin No.: 01-07-29-003A
Date: May, 2001
TECHNICAL
Subject:
Transmission Jumps Out of 3rd Gear (Replace Shift Fork, 3-4
Synchronizer Assembly, 3rd Gear Blocker Ring and 3rd Speed Gear)
Models:
1999-2000 Chevrolet Camaro
1999-2000 Pontiac Firebird
with Manual Transmission (RPO MM6)
This bulletin is being revised due to a change in part numbers. Please discard Corporate Bulletin Number 01-07-29-003 (Section 07 - Transmission/Transaxle).
Condition
Some owners may comment that the transmission jumps out of 3rd gear.
Cause
Condition may be caused by inadequate travel of the 3-4 synchronizer assembly due to the 3-4 shift fork being out of specification or bent.
Correction
Notice:
Please review the appropriate section of the Transmission Unit Repair Manual for correct disassembly and assembly instructions. When performing this bulletin, ALL parts listed need to be replaced. The condition originally occurs because of the 3-4 shift fork being out of specification or bent. This eventually results in damage to the synchronizer assembly, the blocker ring and the speed gear. Replace the 3-4 synchronizer assembly, the 3rd gear blocker ring, the 3rd speed gear and the 3-4 shift fork.
Parts Information
Parts are currently available from GMSPO.
Warranty Information
For vehicles repaired under warranty, use the table.
Disclaimer