Tahoe 4WD V8-6.0L Hybrid (2008)
Fluid Pump: All Technical Service Bulletins
A/T - Hybrid Transmissions Service Auxiliary Fluid Pump
INFORMATION
Bulletin No.: 10-07-30-009
Date: June 09, 2010
Subject: Information on Hybrid Service Transmissions and Auxiliary Fluid Pump/Control Module Connector Compatibility
Models:
2008-2009 Cadillac Escalade Hybrid
2008-2009 Chevrolet Tahoe Hybrid
2009 Chevrolet Silverado Hybrid
2008-2009 GMC Yukon Hybrid
2009 GMC Sierra Hybrid
All Equipped with Hybrid Propulsion RPO HP2
Please Refer to GMVIS
Hybrid Service Transmissions/Auxiliary Fluid Pump
New hybrid service transmissions include a 2010 model year transmission auxiliary fluid pump that utilizes an updated connector that will not plug into
the transmission auxiliary fluid pump control module. This includes the following service transmission part numbers:
-
2008 2WD - P/N 24256371
-
2008 4WD - P/N 24256372
-
2009 2WD - P/N 24256375
-
2009 4WD - P/N 24256376
The 2010 transmission auxiliary fluid pump, P/N 19207983, has a different connector that does not match previous model year service transmissions.
Internally, the 2010 auxiliary fluid pump is identical to the 2008-2009 pump and will interface with a 2008-2009 transmission auxiliary fluid pump
control module utilizing a replacement service connector on the control module.
The 2008-2009 transmission auxiliary fluid pump service part will be replaced by the 2010 version and will be required to service 2008-2009 model year
vehicles. Service replacement for these vehicles will also require a replacement service connector to interface with a 2008-2009 transmission auxiliary
fluid pump control module.
Transmission Auxiliary Fluid Pump Control Module
The 2008-2009 transmission auxiliary fluid pump control module service part will be replaced by the 2010 version and is required to service 2008-2009
model year vehicles. The 2010 transmission auxiliary fluid pump control module, P/N 29546636, includes different connectors that do not match
previous model year transmission auxiliary fluid pumps and engine wiring harnesses. Internally, the 2010 auxiliary fluid pump control module is
identical to the 2008-2009 pump and will interface with a 2008-2009 transmission auxiliary fluid pump and engine wiring harness utilizing replacement
service connectors on the transmission auxiliary fluid pump and engine wiring harness.
Instructions
Follow the tables below when servicing 2008 and 2009 model year vehicles with the above hybrid service transmissions, 2010 transmission auxiliary
fluid pumps and 2010 transmission auxiliary fluid pump control modules.
Refer to Component Connector End Views, Hybrid Controls Schematics and Splicing Copper Wire Using Splice Sleeves in SI for additional information
on these connectors, circuits and use of the splice sleeves included with the service connectors listed below.
Important
The connectors listed are standard "pigtail" type splice connectors with 406 mm (16 in) leads. When installing, cut the pigtail leads back to a
length just long enough to install the splice connectors. When cutting off the original connector, cut the harness just behind the connector body.
Performing these steps will insure the harness remains as close as possible to the original length. It is especially important to not cut beyond the
sealed portion of the auxiliary fluid pump harness.
Component to Connector Reference Table
Follow the table below to determine the correct service connector to use based on the component replaced.
