Yukon Denali AWD V8-6.2L (2007)
Wiring Harness: All Technical Service Bulletins
Engine Controls - Engine Wiring Harness Modification
INFORMATION
Bulletin No.: 06-06-04-029A
Date: January 20, 2011
Subject: Information on Performing an Engine Wiring Harness Modification for L92 Replacement Engines Built without Active Fuel Management(TM)
Hardware Components
Models:
2007 Cadillac Escalade, Escalade ESV, Escalade EXT
2007 GMC Yukon Denali, Yukon Denali XL
2WD Models Equipped with 6.2L VORTEC GEN IV V8 Engine (VIN 8 - RPO L92)
Attention:
2007 Cadillac Escalades and GMC Yukon Denalis with the L92 engine built prior to April 2006 were built with Active Fuel Management(TM) hardware
components, but disabled. Replacement L92 engines built after April 1, 2006 were built without Active Fuel Management(TM) hardware components
and a vehicle engine wiring harness modification must be performed.
Supercede:
This bulletin is being revised to add the 2007 GMC Yukon Denali, Yukon Denali XL models. Please discard Corporate Bulletin Number 06-06-04-029
(Section 06 - Engine/Propulsion System).
When performing an engine replacement on the models listed above with the L92 V-8 engine that was originally equipped with Active Fuel
Management(TM) hardware components, a wiring modification must be performed to the 5-way VLOM (valve lifter oil manifold) vehicle engine wiring
harness connector.
The replacement engines will not contain Active Fuel Management(TM) hardware components. Perform an engine inspection; VLOM 5-way connector
will be located at lifter valley rear of engine. The vehicle wiring harness branch of the VLOM 5-way connector is located and attached at the center of
the vehicle cowl.
If equipped, the repair procedure outlined in this bulletin will aid technicians in the removal of the vehicle engine wiring harness branch of the VLOM
5-way connector and seal and secure the wiring back in the main vehicle engine harness.
Tools and Parts Needed
The following tools will be needed to perform the repair:
-
Heat Gun (J-25070)
-
Wire Cutters
-
Black electrical Tape
-
1 - 1/4" diameter (small) shrink tubing cut approximately 2-1/2"
-
1- 1/2" diameter (large) shrink tubing cut approximately 2-1/2"
VLOM 5-Way Engine Harness Connector
