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GMC Yukon and Yukon Denali Problems

779 messages,  Last post on Oct 31, 2009 at 6:36 AM

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What is this discussion about? GMC Yukon Denali, SUV

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#647 of 779 Tire Pressure by jallard Jul 09, 2008 (7:16 pm)
Have a new 2008 Denali with 20 inch rims. On the door jam, it says to inflate tires to 32 psi for this size. On tires it says 40psi. Which is correct. I was told 40 psi so the tires wouldn't cup. Am confused. Wondering if over inflating by 8 psi per tire can cause tire vibration. Replies to this message: ahightower (Jul 11, 2008 8:00 pm) rsht (Jul 13, 2008 5:43 am) bigmarv1 (Aug 12, 2008 1:19 pm)
#648 of 779 Re: Tire Pressure [jallard] by ahightower Jul 11, 2008 (8:00 pm)
Replying to: jallard (Jul 09, 2008 7:16 pm) 40 is probably the maximum psi for the tire. That doesn't mean you should set it to 40, it just means that's the most it could handle. I typically go with the door jamb recommendation, plus 2-3 psi for slightly better mpg (lower rolling resistance at higher psi). It results in a slightly firmer ride, but still very acceptable. Perhaps slight cupping will result, but I haven't had any problems with that in any of my last four vehicles. I have 17"s, so you'll want to experiment for yourself with your 20"s. Set it to 32, and track your mileage for a month or so. Then go up to say 35 and see if you notice any deterioration in ride quality or significant increase in fuel economy.
#649 of 779 Re: Tire Pressure [jallard] by rsht Jul 13, 2008 (5:43 am)
Replying to: jallard (Jul 09, 2008 7:16 pm) Does the sticker on the door jam references the 32 psi with the 20" tire size? If it does, then the 32 psi is the minimum cold tire pressure you want to set at. I agree with ahightower to set the pressure a couple of psi higher than what's suggested on the sticker to gain a little on the mpg. Ultimately, you'll have to find your comfort zone by observing and adjusting the tire pressure you desire between 32 to less than 40 psi.
#650 of 779 Re: 2007 Yukon Keyless Entry [kendog2] by aramco Jul 14, 2008 (1:50 am)
Replying to: kendog2 (May 14, 2008 10:57 am) Please forgive me if this was too obvious a reply but it took a while, at least for me to learn this: for assuring that the rear doors unlock the keyless button is pressed twice. One press opens the driver's door. The second consecutive press on the button opens the remaining doors..... ....
#651 of 779 Re: Headlamp Problems [3babies] by rigatoni Jul 22, 2008 (6:49 pm)
Replying to: 3babies (Oct 02, 2006 4:29 pm) What was the final resolution to your problem? I have an 02 Denali and just started to have the same problem with the lowbeams not working. They were fine until I switched to highbeams, then when I switched back the lowbeams didn't work. I ended up using the fog lamps to get home. I had changed the bulbs a couple of months ago and they were still good. Not sure what to do next and definitely don't want to go to the dealer for this. It's like an invitation to get raked over the coals! Replies to this message: rigatoni (Nov 03, 2008 4:29 pm)
#652 of 779 1999 Denali Service by ted5151 Aug 08, 2008 (5:41 pm)
My Denali is a 1999 with a 5.7 liter, and 120,000 miles.   The intake manifold gasket (LOWER) needs to be replaced , as I am leaking anti freeze, and have slight concern it will get into oil.   I check oil level 3 times a week, but it does not show level increasing.   The GM dealer has provide a quote to fix lower intake gasket, but also mentioned valve cover gaskets, in checking with GM parts department, they show bolts to intake manifold can be reached without taking off valve covers.   My questions are: Can intake manifold be taken of without removing valve covers?                               Should I have any concerns due to age 10 years, that other parts, will be broken or damaged, with this service job.   There sure is a lot of hoses and tubes, in the way of intake access.   Thanks in advance for all replys.   The Denali is due to go in for this service on Monday Aug 11/08, so a quick reply would ba appriecated
#653 of 779 Re: Tire Pressure [jallard] by bigmarv1 Aug 12, 2008 (1:19 pm)
Replying to: jallard (Jul 09, 2008 7:16 pm) 40 psi is the max that the tire can handle 32 psi gets a good ride
#654 of 779 Yukon XL idle problem by bamandotis Aug 24, 2008 (5:26 pm)
I have a 2005 Yukon XL that is making a whining noise as you accelerate and the oil pressure gauge jumps up as well. Dealer has had twice and can't fix. Any suggestions
#655 of 779 2000 Denali Security system problem by highdesertdude Sep 03, 2008 (1:36 pm)
Lately, after sitting for awhile, the red security light in the center console is blinking and clicking rapidly, and the electrical system is dead. It will not start without a charge. It only takes a couple of minutes to recharge it, so the battery is not dead. This has happened 3 times intermittently in the past couple of weeks. I have check all fuses, and they are good. What is going on? Thanks.
#656 of 779 Re: Automatic Door locks not working [bcnet] by dmacken1 Sep 21, 2008 (6:24 pm)
Replying to: bcnet (Oct 31, 2005 2:25 pm) I have found that changing the command on the computor helps for a short while but remedy is still a mystery. I have also changed the relay but no help. Replies to this message: skytop1 (Oct 09, 2008 4:52 pm) dmacken1 (Oct 10, 2008 3:10 pm)

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