Go to online store reliable they have repair manuals I am sure you will get the solution. Here's the link
2007 GMC Yukon Workshop Service Repair Manual
SOURCE: Transmission temp running 160 degrees in my 2007 Yukon Denali
I you did it by yourself is better to tell the dealer that you truck has that problem dont tell them that you did that because you may have voided the warranty.
SOURCE: I have a 2005 Yukon Denali with 66K miles. For
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Hi Jbunnell
I had the same problem with my ’02 Denali
and I took it down to a local shop yesterday to have a $60 computer diagnostic
test done. They told me the catalytic
converter was backed up and causing the misfire at high RPM. Easy fix.
$230 later they put a new cat which did the trick. They also suggested a tune up (new plugs,
wires, air filter, and fuel filter) which I will do myself tomorrow.
The shop also told me that by law, a catalytic converter has
to be warranted my law for 80,000 miles.
My problem was that I had 81,000 miles.
I called some GM corporate number to see if they would plead my case (
told them the situation and wanted to see if they could offer some sort of GM
business goodwill that they would “write off” and apply to my situation) They said all I had to do was take it to a
GMC dealer and have it diagnosed for $100 and they could forgive me. The shop owner and his son highly suggested I
get it done there since it would be covered but it was not convenient for me to
drive across town to save a measly $130.00.
Plus I really like the work this “mom and pop” shop does and value their
honesty.
Here’s a little side info.
The GMC dealership said that if it wasn’t covered under warranty, it
would have been $900-1100 to change the catalytic converter. WOW! A much
different price compared to what the local shop charged me.
Anywho, this post is getting rather lengthy but I saw you
were having the same (or similar) problem and thought I’d share my experience
in hopes that it might help. Just
remember, the computers in today’s vehicles record EVERYTHING you do while
driving your truck, from the top speed you drove to work this morning, to an
engine misfire. The computer diagnostic
will save you time and money by pinpointing the issue at hand.
I do not suggest taking it AutoZone (or the like) because their
computer diagnostic is not detailed. I took
it there for the heck of it (b/c the auto shop was closed down for the day) and
they printed off about 8 different things it could be. And the one the tech at AutoZone suggested I
do is the oxygen sensors – and the Denali has
4 of them @ about $99/each. Had I done
that, I would have spent $400 and not fixed the problem.
And Firestone thinks highly of them selves apparently. They wanted to charge $180.00 just to plug in
the computer and read a screen to tell me what wrong – that’s more than the
dealership – yuck!
I wish you the best in solving this issue.
SOURCE: i have a 2002 gmc yukon denali xl with 6.0L engine
my 2002 had same problems and to fix, I loosened the hose clamp on the throttle body air intake to air box hose. Then opened the butteryfly by hand and used throttle body cleaner, used carb cleaner on another, and removed all the black grime that collects around the throttle body butterfly. About every forty thousand miles i have to do this. I have 123k on mine now and have done it three times. Fixes the low idle, dying in reverse, lite flicker and alternator dropout.
Home it works, if it does
thanks
[email protected]
SOURCE: 2001 Yukon Denali: The security light came on my 1999 Yukon Denali ye...
The security system (Passlock) is having problems, it's typical on those trucks. You can find a great write-up here: http://newrockies.ca , it was the only thing that saved my Park Avenue.
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