Wrangler 2WD V6-3.8L (2008)
Synchronizer Hub: Customer Interest
M/T - Pops Out Of 1st Gear On Acceleration
NUMBER: 21-001-10 REV A
GROUP: Transmission
DATE: April 20, 2010
THIS BULLETIN IS BEING PROVIDED IN ADVANCE PARTS ARE NOT EXPECTED TO BE AVAILABLE UNTIL APRIL 23, 2010 UNLESS
THERE IS AN IMMEDIATE NEED, DO NOT ORDER PARTS UNTIL APRIL 23, 2010 ALL ORDERS WILL BE HELD UNTIL STOCK IS ON
HAND.
THIS BULLETIN SUPERSEDES SERVICE BULLETIN 21-01-10, DATED MARCH 2, 2010, WHICH SHOULD BE REMOVED FROM YOUR
FILES ALL REVISIONS ARE HIGHLIGHTED WITH **ASTERISKS** AND INCLUDE NEW PART NUMBERS FOR THE FIRST GEAR AND
1-2 SYNCHRONIZER KIT AND A REVISION TO THE 4X2 LABOR OPERATION NUMBER.
SUBJECT:
Manual Transmission Pops Out of Gear
OVERVIEW:
This bulletin involves verifying that the transmission shift boot is not interfering with the engagement of first gear and if not than replace the first gear
and 1=2 synchronizer assembly.
MODELS:
2007 - 2010
KA/KK
Nitro/Liberty
2007 - 2010
JK
Wrangler
NOTE:
This bulletin applies to vehicles equipped with a manual transmission (sales code DEH)
SYMPTOM/CONDITION:
The transmission pops out of first gear while accelerating The condition may occur intermittently and may be difficult to diagnose.
DIAGNOSIS:
Verify that the shift boot is not causing the issue by ensuring the boot is not binding when in first gear In addition if the customer complains that the
transmission pops out of gear in first, third, and fifth, than the shift boot would be most likely the cause for the complaint Refer to the appropriate service
information regarding shift boot replacement If the shift boot is not causing the transmission to pop out of first gear, perform the following Repair
Procedure.
PARTS REQUIRED:
