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Condition/Concern: Some customers may comment that they are unable to override the automatic door locking feature. In prior model years, customers were able to select “Doors Lock Manually” from the DIC. However, starting in the 2005 model year, this selection was removed. Recommendation/Instructions: Since the 2005 model year, all BCM’s (Body Control Modules) are programmed from the factory to lock all doors when the transmission is shifted into gear or vehicle speed is greater than 8 mph (13 km/h). There is no option to disable the auto door locks from the factory, but if an owner wishes to have the auto door locks disabled the following procedure can be performed: 1. Use the following procedure to disable the auto door locks on the models listed below: 2007-2008 Cadillac Escalade, Escalade ESV, Escalade EXT 2007-2008 Chevrolet Avalanche, Silverado (new body style), Suburban, Tahoe 2007-2008 GMC Sierra (new body style), Yukon, Yukon Denali, Yukon XL, Yukon Denali XL Reprogram the BCM with updated calibrations currently available in Tis2Web. In some rare instances, the calibrations may not be available in Tis2Web and Techline Customer Support should be contacted to obtain the calibrations. When at the “Calibration Selection” screen in Tis2Web, select “locking” (should be highlighted in Red) and pick the calibration listed as “(Per Customer Request Only) Auto door locks off, option no longer in DIC”.

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SUBJECT: MODELS: Heated Windshield Washer Module Short Circuit – Add Wire Harness 2006-2008 model year Buick Lucerne; Cadillac DTS; HUMMER H2 vehicles; 2007- 2008 model year Cadillac Escalade, Escalade ESV, Escalade EXT; Chevrolet Avalanche, Silverado, Suburban, Tahoe; GMC Acadia, Sierra, Yukon, Yukon XL; Saturn OUTLOOK vehicles; and 2008 model year Buick Enclave vehicles equipped with a heated washer fluid system. A short circuit on the printed circuit board for the washer fluid heater may overheat the control-circuit ground wire. This may cause other electrical malfunctions, create an odor, or cause smoke. In rare cases, it may cause a fire. PARTS INFORMATION No parts are required to pull the heated windshield washer fuse. When wire harnesses are available for ordering, a revised bulletin with ordering information will be sent to dealers/retailers. SERVICE PROCEDURE Important: Until wire harnesses become available, the following procedure allows dealers/retailers to remove the heated windshield wiper fuse, disabling the system. 2007-2008 Cadillac Escalade, Escalade EXT, Escalade ESV, 2007-2008 Chevrolet Avalanche, Silverado (GMT900), Suburban, Tahoe, 2007-2008 GMC Sierra (GMT900), Yukon and Yukon XL 1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in SI. Important: The underhood fuse block is located in the engine compartment on the driver side of the vehicle. Refer to Underhood Fuse Block in the Owner’s Manual for fuse information. 2. Locate the underhood bussed electrical center (UBEC). 3. Remove the UBEC cover and locate the 60 amp heated windshield washer fuse. Important: Remove the two relays (1) next to the fuse to gain access to the fuse. 4. Remove the 60 amp heated windshield washer fuse (2) using needle-nose pliers. 5. Store the 60 amp heated windshield washer fuse in the glove compartment. 6. Install the two relays (1) removed in Step 4. 7. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in SI. 8. Test the operation of the windshield wiper system. 8.1 Ensure the wiper system functions in low and high positions. 8.2 Verify that the windshield wiper/washer switch functions. The windshield wiper system should provide wiper fluid to the windshield. 8.3 Ensure that the heated windshield washer fluid system has been disabled. • Verify that the heated windshield washer switch does NOT flash. 9. Secure the UBEC cover on the UBEC. 10. Close the hood.

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GM Accessories Headrest DVD System Display Monitor Inoperative (Install Cable Connector Clamps) 2004-2007 Buick Rainier 2008 Buick Enclave 2003-2008 Cadillac Escalade Models 2005-2008 Cadillac CTS, SRX, STS 2006-2008 Cadillac DTS 2003-2008 Chevrolet Avalanche, Silverado, Suburban, Tahoe, TrailBlazer Models 2006-2008 Chevrolet Colorado 2007-2008 Chevrolet Equinox, HHR 2003-2008 GMC Envoy Models, Sierra, Yukon Models 2006-2008 GMC Canyon 2007-2008 GMC Acadia 2007-2008 Pontiac Torrent 2005-2008 HUMMER H2 2006-2008 HUMMER H3 2007-2008 Saturn OUTLOOK 2005-2008 Saab 9-7X Condition Some customers may comment on an inoperative display monitor or monitors in the GM Accessories Headrest DVD System. Cause This condition may be caused by a loose connection at the display monitor cable connectors. These connectors are located at the lower rear part of both front seats. Two cables are routed to the display monitor in each seat.