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Old 04-15-2013, 12:04 PM   #1
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Default 2009 Tahoe Door Lock and fuse problem

I have a 2009 Chevy Tahoe LT that keeps blowing the same 10 amp fuse. The fuse is number #55 HVAC IGN 10 amp. Everything works except it will only blow out hot air from vents when fuse is blown. Also have automatic door lock issues. Both of the rear doors wont lock or unlock when using the key fob or the button inside the Tahoe. Only way to lock or unlock both back doors is manually. Passenger side front door works intermittently. Wondering if this is a problem with each individual door or if it is something like the Body Control Module? Appreciate any help.
Craig
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Old 04-15-2013, 05:03 PM   #2
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air temp actuator(one left and one right), mode actuator, recirc actuator all powered by this fuse unplug them and see if the fuse blows. if not then plug one in at a time to see which it is. if it does its in the wiring.
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Old 04-15-2013, 05:12 PM   #3
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for the doors there are two fuses in the i/p, unlck1 and lck1, check them out make sure not blown or loose. check with meter while pushing the lock or unlock. there is also a relay there
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