PIP5065

File in Section:
Bulletin No.:
Service Bulletin
Date:
PIP5065
October, 2012
PRELIMINARY INFORMATION
Subject:
Ticking Noise in 3rd and 4th Gear Above 30 MPH.
Models:
2010-2012 Chevrolet Colorado
2010-2013 Chevrolet Express, Silverado
2010-2012 GMC Canyon
2010-2013 GMC Savana, Sierra
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern
Some customers may comment about a ticking noise when driving above 30 miles per hour in third and fourth gear.
This noise is present with the TCC engaged or disengaged and may be present in second gear under certain driving
conditions.
This concern may be caused by a mis-machined reaction carrier which may cause the low reverse clutch plates to
stick and release creating the ticking noise.
Recommendation/Instructions
Inspect the Reaction Carrier (Item 681 in SI document 1960189) for being mis-machined where the low reverse
clutch plates align on the outer hub.
2914493
Call out 1
Shows a taper in the machined surface of the reaction carrier lug.
This mis-machined hub is causing the low reverse clutch plates to stick and release creating the ticking noise
Replace the Reaction Carrier and low reverse clutch plates.
Parts Information
Part Number
Description
QTY
24241237
Reaction Carrier
1
Warranty Information
For vehicles repaired under warranty use:
Labor Operation
Description
Labor Time
K7324
Reaction Carrier Overhaul
Use Published Labor Operation Time
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is
resolved without completing every step, the remaining steps do not need to be performed.