Silverado 1500 2WD V8-6.0L Hybrid (2009)
Technical Service Bulletin # 09241B
Date: 101025
Campaign - Transmission Clutch Housing Fracture
CUSTOMER SATISFACTION
Bulletin No.: 09241B
Date: October 25, 2010
Subject: 09241B - Transmission Clutch Housing Fracture - Reprogram Transmission Controller
Models:
2009 Cadillac Escalade
2008-2009 Chevrolet Tahoe
2009 Chevrolet Silverado
2008-2009 GMC Yukon
2009 GMC Sierra
Equipped with a Two-Mode Hybrid Transmission (RPO M99)
Supercede:
The expiration date for this program has been extended to October 31, 2011. Please discard all copies of bulletin 09241A, issued October 2009.
THIS PROGRAM IS IN EFFECT UNTIL OCTOBER 31, 2011.
Condition
Certain 2008-09 Chevrolet Tahoe and GMC Yukon; 2009 Cadillac Escalade, Chevrolet Silverado, and GMC Sierra vehicles, equipped with a
Two-Mode Hybrid Transmission (RPO M99), may have a condition in which excessive pressure on the transmission clutch could cause a fracture. This
may result in an improper transmission shift when shifting from third to fourth gear. It may also cause the engine to run at a higher RPM, reduce fuel
economy, and illuminate the Service Engine Soon light.
Correction
Dealers are to reprogram the transmission controller to reduce the clutch pressure. Some vehicles will also require the replacement of the control
solenoid valve.
Vehicles Involved
Involved are certain 2008-09 Chevrolet Tahoe and GMC Yukon; 2009 Cadillac Escalade, Chevrolet Silverado, and GMC Sierra vehicles, equipped with
a Two-Mode Hybrid Transmission (RPO M99), and built within these VIN breakpoints:
Important
Dealers are to confirm vehicle eligibility prior to beginning repairs by using the Required Field Actions section in the Global Warranty system.
Not all vehicles within the above breakpoints may be involved.
For dealers with involved vehicles, a listing with involved vehicles containing the complete vehicle identification number, customer name, and address
information has been prepared and will be provided to US and Canadian dealers through the GM GlobalConnect Recall Reports, or sent directly to
export dealers. Dealers will not have a report available if they have no involved vehicles currently assigned.
The listing may contain customer names and addresses obtained from Motor Vehicle Registration Records. The use of such motor vehicle registration
data for any purpose other than follow-up necessary to complete this program is a violation of law in several states/provinces/countries. Accordingly, you
