Question about 2000 GMC Yukon Denali
You have a broken wire in the seat. The blue wire inside the seat cushion will break or burn in two. If you are handy with tools you can remove the seat, remove the screws from the control switches cut the hog nose ring clips, undo the velcro on the back of the seat bottom and carefully remove the bottom seat cover. You will find that the blue heating element blue wire in burned in two. Cut the bad part out, slide some heat shrink tape over one end. Slide it far enough so that you wont shrink it from the solder gun. Solder the two wires together and keep the joint minimal so that the shrink tape will slide over the solder joint. shrink the tape with a heat gun or hair dryer.Put everything back in reverse order. You will need to go to an older conventional auto parts store and buy a hog nose ring kit with the pliars to replace the upholstery. Go to an upholstery shop and they can tell you where to buy it . It should cost 3 or 4 dollars. this whole seat repair should not cost over $8.00. Also remember check the fuses first and also remember that the seatbelt has to be fastened for the seat heater to work.
Posted on Jan 25, 2013
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Posted on Jan 02, 2017
Left side of the dash, to the right of the IP fuse block. Its a 25 amp circuit breaker, an aluminum cased breaker. CHECK FOR POWER ON THE SEAT SWITCH "A" TERMINAL AND GROUND ON THE "D" TERMINAL. IF YOU HAVE POWER AND GROUND THE SWITCH IS BAD.
Posted on Jun 16, 2009
Hey i found a link for you with step by step pictures and literature on how to fix this problem. Apparently it's a common thing with yukon/tahoes. Web site; http://www.fullsizechevy.com/forums/general-discussion/technical-maintenance/313280-tahoe-rear-air-has-no-heat-just-blowing-cold.html. Good luck, hope i helped.
Posted on Dec 11, 2009
See GM TSB 05-08-143-001, If you have Adjustable pedals, especially if they don't work with the memeory buttons, but function with thier own buttons. Its the Brake Pedal Position Sensor is shorted and mesing up the seat module which controls the heaters too. My 05 Suburban had the same issue
Posted on Dec 11, 2009
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