Last post on Nov 07, 2013 at 4:11 PM
You are in the GMC Yukon
What is this discussion about?
GMC Yukon Denali, SUV
Go to NHTSA to file a safety complaint.
Or call Monday-Friday (8 am to 8 pm ET) (888) 327-4236 TTY: (800)424-9153
#115 of 1099 Re: 2004 GMC Yukon Denali(shorty) Drietrain/exhaust rattle [evans1]
Aug 27, 2004 (4:23 am)
My '02 Denali also made a resonation noise at light throttle. It was really noticable when I would back it into my driveway. The repair order simply stated "repaired muffler" and problem was solved. It might have been the same repair as ocmike3 posted. I put the truck on a lift shortly after and didn't see any weights added as I've seen posted by some owners on the Tahoe/Yukon board.
FWIW, the first month with my Denali was very disappointing & frustrating since it was at the dealer a few times for several problems that weren't noticeable during the test drive. However, the dealer did fix all of them. And its been trouble-free since then.
#116 of 1099 Complete Loss of Electrical Power
Aug 30, 2004 (9:48 am)
My 2003 XL Denali (30k) miles, just lost all electrical power in front of my house. Was running yesterday, today not even the interior lights work (no power at all). Batter charger shows battery has full charge. Has anyone heard of this before I get it towed to dealer?
#118 of 1099 Re: Complete Loss of Electrical Power [charmer]
Aug 30, 2004 (5:32 pm)
These things have so many computer parts now that it could be anything, but old world thinking should point to the alternator. If your alternator is dead, you get nothing, even with no problems with your battery.
#120 of 1099 99 Denali...
Sep 12, 2004 (5:39 pm)
Seems like most of you are talkin' about the new Denali but I was wondering, anyone out there with the 99-00 Denali or Escalade with the rear cargo doors have this problem... When I go to open the right cargo door it is almost as if something is swelling in the door and the hinge is stiff (Kinda like they are when you first buy it but worse!) However the left one works good as ever. It's not a really big deal right now but i would like to get it fixed. Sitting outside in the college parking lot probably doesn't help!
#121 of 1099 Re: 2004 GMC Yukon Denali(shorty) Drietrain/exhaust rattle [evans1]
Sep 25, 2004 (11:09 pm)
My 03 Denali does the same exact thing. Still under warranty so I will be taking it in to the dealership for service.
#122 of 1099 Re: transmission clunking [theham]
Oct 04, 2004 (7:35 pm)
Transmission clunking is a mystery only until today. This is your opportunity to educate a GM dealership about clunking and the fix for this symptom. After fighting the cause myself I proceeded with the fix on my own time and expense.
The complaint: Customer experiences clunking noise under normal accleration from a stop light.
The fix: During production GM installed a soft metal driveshaft yolk. What this means is that the yolk that fits into the driveshaft is made of softer metal than the output shaft on the transmission. This is an engineering method that is industry standard. If you are mechanically inclined, remove your driveshaft and take it to a highly reputable driveline service shop. Have the shop replace the u-joints with Spicer servicable u-joints and also have them install a Spicer yolk. The yolk is manufactured with a harder material and will make the clunking go away. Easy fix for about $120.
The problem is that the splines on the inside of the yolk get burred up and stick to the splines on the output shaft of the transmission. One way you can diagnose the problem is by removing the driveshaft lubricate the splines inside of the yolk with CV Joint grease (blue or green in color). Make sure that you don't over do it because you will have a fight on your hands trying to get it back on. If the problem goes away get the yolk replaced.
Oct 04, 2004 (7:42 pm)
I own a 1999 Yukon Denali 4WD and am experiencing the following:
Symtom: Upon normal acceleration onto a freeway and as the vehicle approaches 65 - 70 mph the torque convertor kicks in and the truck shakes harder than a 7.0 earthquake. The computer compensates and disengages the convertor which softens the vibration but does not eliminate it. I had a Tech 2 in the vehicle to attempt a diagnosis and found that as the converter engaged around 65 mph the number 3 cylinder began misfiring over 160 times. I don't know how number 3 cylinder and the convertor are tied together but they are not singing a pleasant tune. What's the feedback.
Oct 05, 2004 (2:24 am)
Was a P1870 DTC set? If so, the TCC isolator valve bore is probably worn in the valve body. A Sonnax sleeve and valve will fix it.
If not, when the TCC engages it lowers engine speed about 300 rpm. This reduction in engine speed increases volumetric efficiency of the engine, causing higher compression pressures. That's when marginal secondary ignition components start breaking down. The mechanical connection between the engine and drivetrain provided by the TCC tends to amplify the symptoms. Replace the plugs and wires with ACDelco, and take a hard look at the coils for any signs of carbon tracking on the towers.