On my 99 Yukon slt, non of the 3 brake lights turn on, checked the bulbs and they are good, same with the fuses, what should I check next?

On my 99 Yukon slt, non of the 3 brake lights turn on, checked the bulbs and they are good, same with the fuses, what should I check next? 3 Answers

my headlights on my 2000 yukon turn on but will not stay on checked all the relays and fuses but nothing 5 Answers

my headlights turn on with the switch but after a few seconds they turn off.the parking lights stay on and the high beams work when ever i turn them on

I Have A 07’ Yukon SLT. And I been Having battery drainage problems lately.. it will be working Fine than one minute I while get back in it to drive and it will be Dead! Get a jump, it comes back on and be fine for weeks than one day it just dies again? Not sure what’s wrong? But what I did find out is that the owner before me had Speakers hooked up and the loose Wirer's are still running under my seats and in my truck the other end of the wiRers that ran to the speaker is just thier live wirers with nothing hooked to it? Could that possibly be why the battery is seen tobe draining and if So what could I do to fix it, or either how could I disconnect the wirers from the battery running live under my seats??? 4 Answers

I Have A 07’ Yukon SLT. And I been Having battery drainage problems lately.. it will be working Fine than one minute I while get back in it to drive and it will be Dead! Get a jump, it comes back o...

I am having trouble with my ac in 2005 GMC Yukon. The air just quit blowing out cold air. It still blows, just not cold. When I push the ac button, the motor does even drag a little like it used to when turing on the ac. Any suggestions? I checked the fuses, its not that 4 Answers

I am having trouble with my ac in 2005 GMC Yukon. The air just quit blowing out cold air. It still blows, just not cold. When I push the ac button, the motor does even drag a little like it used to wh...

I have a 2006 GMC Yukon XL with a dual zone ac/havc unit. The rear heat works but the front only blows cold air. I have checked all relevant fuses, checked the climate control module, and all are good 1 Answer

The heater core is good, I believe, since the rear is producing heat. Could I have a bad actuator? And if so, how can I diagnose that?