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    NNBS Yukon Spec-D projector beam headlights- never used

    I picked these Spec-D lights up to try in my Denali because I always thought the OE headlights were horrible. Never had the time to install them and traded it a week ago for a new turbodiesel SUV. So these need to go. Spec-D, use H1 bulbs (included), separate low and high beams, which should be...
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    Bye bye Denali.....

    While I've loved owning my '09 Denali, once I got over 90K miles it started getting really expensive to repair everything that's gone bad. Front diff carrier bearings, rear air shocks and compressor, nav head unit. And just 3 weeks ago at 104K miles the transfer case needed the drive chain and...
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    Throttle Adaptation- anyone try this?

    In my previous Bosch FI equipped Audi and BMW vehicles you could perform a throttle adaptation that essentially reset what the electronic throttle learned, in other words get rid of its bad habits. Tried it on my Denali last week and it worked. My part throttle shifts had become a bit harsh...
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    Wipers have been really slow in our recent cold weather

    This past weekend when temps dropped into the single digits my wipers moved very slowly, barely making a full pass in 20 seconds. Pulled it inside on of my heated loading docks here at my business Monday and after that the wipers worked pretty normally. Until this morning, now -2 when I got...
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    Very strange overheating problem last weekend

    Had a very strange overheating problem when towing the race car trailer a week ago. First let me say that I've hauled the same trailer and race car all over the country and the water temp has never strayed from the 210 mark on the gauge. For the past several years I've also had a second...
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    OE Wheels replica wheels are horrible

    After swapping summer Bridgestones with my winter Bridgestone snows twice a year I decided to get another set of wheels for the summer. Like the look of the Esky 22' multispoke wheels but don't want 22's so had my local Discount Tire manager order a set of OE Wheels replicas of that wheel in the...
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    Carrier bearing shot- swap to 3.73 gears while in there?

    Well it looks like I've become victim to the carrier bearing failure at 90,000 miles in spite of having changed axle fluids with good Redline synthetic oil at 40,000 and 75,000 miles. I have a couple of choices since one of the products my company distributes are remanufactured front diffs...
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    Woohoo, the new Apple ios 8.2 works with steering wheel controls

    Finally!! Apple got it's act together. Recall when I'd updated the ios for my iPhone 5S to ios 8.0 that all the steering wheel voice calling commands stopped working. My daughter's iP4 on older software and my old iP5 on ios 7.x all still worked just fine. Apple swore it wasn't their fault...
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    Cabin Air Retrofit kit interest?

    Moderators- If this is against the rules, my apologies. In my business I manufacture and distribute cabin air filters as one of my product lines that I sell to large national distributors and retailers. And it bugs me that of the 4 street cars in my driveway, my Denali is the only one that...
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    Apple IOS 8.1.2 and now the steering wheel controls don't work

    Updated my iPhone 5S to IOS 8.1.2 and now the steering wheel controls don't work to make calls through voice prompts. My old iP5 still running to the old IOS7 works fine. If I press the call button on the wheel and say "call home" nothing happens, but my wife will answer the phone and can hear...
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    Rear hatch is dangerous when it fails!

    This past weekend my 12 yr old daughter pressed the release on the rear hatch to open the hatch on my Denali. Got about 2/3 of the way up and just as she was about to reach in for her soccer gear the hatch went bang and slammed down. She got her arm out just in time, if her hand had been there...
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    I'm the latest victim of busted engine mounts

    Passenger side was replaced at just under 50,000 but warranty wouldn't pay to do both sides. So naturally, now that I'm out of warranty by time, but only 71,000 miles, the driver's side is busted. So bad I'm borrowing a Tahoe from a friend to tow my race trailer this weekend so I don't...
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    Arnott Bilstein self leveling rear shocks rock!!

    The rear self leveling electronic shocks in my Denali finally crapped out. First it was the electronic functionality, then more recently the air bags started to leak. And of course the GM extended warranty doesn't cover shocks (or power steering hoses, or bad XM radio module). so when I found...
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    Rear air bag shot- need a new drier when fixing?

    The left rear electronic, self leveling shock on my Denali finally quit. First the electronics quit but no big deal on that. But now the air bag on that side is shot too. Hooked up my trailer a week ago and the pump ran for a good 30 seconds without shutting off so I yanked the fuse, didn't...
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    Service Suspension System

    Got the Service Suspension System failure today while towing my trailer. Pump still works just fine, and no codes. About to haul the race car trailer to Alabama from Chicago and definitely don't want to have a problem on the way. But with my Reese DualCam weight distributing system it tows just...
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    Rainex wipers are lousy

    I've always run the Bosch Icon wipers and have been really happy with them. Decided it was time to put new wipers on, and my local Advance store was out. So I tried the Rainex wipers. Big mistake. The float off the windshield at 75 mph and only clear half the windshield. So in the garbage they...
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    Check Engine Light

    So how reliable is the Onstar diagnostics? I got a CEL while driving home last night. Looked up in my Onstar diagnostics and it said no issues found, all Green. The only item is that my oil life hit 0% this week. Is it possible that hitting 0% triggers a CEL and prevents the remote start...
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    Anybody disable the wiper extra sweep after running washers?

    I'd love to find a way to disable the extra delayed sweep of the wipers after running the washers. Invariably the windshield is dry and the wipers just drag against the windshield. Has anyone figured out how to do this?
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    Did you take care of your favorite tech for Xmas?

    The tech at my dealership has always treated me right. I know he likes nice IPA's so I'll be dropping a case of Lagunitas Maximus IPA for him this morning. Never hurts to say thank you at the holidays for the folks that take care of your favorite ride.
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    Modest Bose upgrades ideas needed

    Decided to keep my '09 Denali one more year, hoping a turbodiesel comes down the pike in a Denali or Escalade next year. So I want to make some modest upgrades to the crappy factory Bose system. It's never been even close to the sound quality of the Bose systems in two previous Audis or even my...
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    Derali trans cooler installed in Denali

    After I saw trans temps top 220 last weekend, the first thing I did immediately after getting home was to order a Derali trans cooler along with a Derali GM cooler adapter. Folks at eTrailer.com are great, have dealt with them for years and their customer service plus technical knowledge is...
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    Towing temps hit 220 this past weekend

    Pulling about 6800 lbs- race car, quad, 2 sets of wheels and tires in enclosed trailer- got stuck in stop and go traffic on the interstate so the Denali was shifting between 2nd and 3rd a lot. Outside temp was close to 90, a/c on. With all the trans gear changes the trans temp touched 220...
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    Nav confusing left and right

    4 times this past weekend on a three state trip my Nav voice told me to turn left but the screen showed right. And I knew it was supposed to be a right. Up until this weekend it's never done that. Dealer- "couldn't duplicate the problem so no problem found." Anyone else ever have this...
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    Wow, '13 Denali Bose blows away my '09 Denali Bose

    My ex picked up a '13 Denali with 13,000 miles on it- no she didn't buy it to replace her MDX, it's a rental from Enterprise. She needed more room for a business trip and this is what they gave her. She's driven my Denali plenty of times so she's familiar with all the controls, but as we...
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    Why can't GM offer engines like all the other manufacturers?

    We're still stuck with the 5.3L or the 6.2L in SUV's, or 5.3 or 6.0 in 1/2 ton trucks. Ford offers the turbo V6 in their 1/2 tons and some SUV's. Just drove an F150 with that new engine while pulling a 4500 lb trailer and it pulled better than my Denali. That engine makes 420 lb-ft of...

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