Magazine for the auto service professional
Issue link: http://asp.epubxp.com/i/392413
Circle 114 on Reader Service Card 28 | September/October 2014 8. If interference was responsible for the condition, explain the technical back- ground to the customer. 9. If the synchronization procedure was not successful, adapt the remote control key(s) to the central comfort system con- trol module (address word 46) using the VAS scan tool. Follow test plan J393-cen- tral control module for comfort system, adapting remote control key via adapta- tion (channel 21). Sometimes following the "erase all memory positions frst" test plan produces better results. GM power liftgate issue Power liftgate will only work with RKE (remote control key fob) Models: 2009-2013 Cadillac Escalade, Escalade ESV 2009-2013 Chevrolet Suburban, Tahoe 2009-2013 GMC Yukon Models (with Rear Power Liftgate (RPO E61) The following diagnosis is helpful if the vehicle exhibits the symptom(s) described. Condition/Concern Some customers may state that the rear power liftgate is inoperative with the inside switch and the outside door handle. The customer may also state that when this happens, the power liftgate will work OK from the RKE key fob. Recommendation/Instructions Starting in mid-model year 2009, GM changed the requirements for opening the power liftgate from the inside switch and the outside door handle. The change requires all the doors to be unlocked before opening the power liftgate. This can be accomplished by pressing the unlock button on the key fob twice or pressing the unlock button on the door panel. The change only applied to the power liftgate module when using the inside switch and the outside door handle. The power liftgate will open at any time when pressing the power liftgate button on the RKE Fob. Some 2009 Model Year vehicles that were The Tech Bench