Last post on Mar 27, 2013 at 1:10 PM
You are in the GMC Yukon
What is this discussion about?
GMC Yukon Denali, SUV
Go to NHTSA to file a safety complaint.
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#501 of 1091 Re: 99 GMC denali 125k slight bucking @ 45-55mph [reeftankguy]
Nov 27, 2006 (8:26 pm)
I have a 1998 GMC Yukon and I have received the same code. I have lost my reverse, 2nd gear seems to function when it so chooses and 3rd gear is almost non-existent. I can drive it, but it's like a stick shift with a bad clutch?
I was curious to know the details about the replacing of the solenoid and what it entailed since I seem to be in the same boat.
I am not brave enough to venture into a tranny blind, so I was going to AAMCO tomorrow.
Any guidance would be greatly appreciated.
#502 of 1091 2001 Yukon Denali ON STAR
Nov 29, 2006 (1:26 pm)
Did anyone else get a letter from On Star saying that they will no longer be providing service to older vehicles because the On Star system in running on an anolog system???
#504 of 1091 Chipping Paint on Navigation Buttons-2003 Denali
Dec 04, 2006 (9:05 pm)
The paint is chipping off the navigation console buttons exposing the yellow plastic under them. Does anyone have a fix for this? (Other than GMC-- I've been reading about their stepping up to the console paint issue!!!!)
#505 of 1091 06 Denali Headlamp Flickering
Dec 07, 2006 (7:54 am)
My headlights flicker during night driving. Happens approx. 10-15 times per minute. Dealer says he cannot duplicate the problem. Anyone else ever had this issue??
HELP HELP HELP.
#506 of 1091 Re: 06 Denali Headlamp Flickering [jw3591a]
Dec 08, 2006 (10:09 pm)
Do you know what the RPM is when the lights are flickering?? Do the dash lights flicker at the same time?? Does the rate of flickering change with a change of RPM?? Have you had starting problems?? Does the engine seem to turn over slower after the vehicle has been off for some time???
#507 of 1091 Re: 06 Denali Headlamp Flickering [delfina1]
Dec 10, 2006 (3:24 pm)
RPM's make no difference. Flicker rate does not change with RPM. Yes, dash lights and all other lights that are illuminated flicker at the same time. Vehicle is new (5K miles) No starting or turnover problems. It doesn't do it when cold. Vehicle has to be operates 10 minutes or more. I'm thinking perhaps the diode trio in the Alternator. Your thoughts? Thanks..
#508 of 1091 Re: 06 Denali Headlamp Flickering [jw3591a]
Dec 10, 2006 (6:41 pm)
My shade-tree mechanic opinion is that it is not the diodes but rather the voltage regulator. The key is that the flickering does not change with RPM and the added information that it does not flicker when cold. I think you are seeing the voltage regulator turning on and off after you have fully charged the battery and it is just regulating in a "maintaining" mode. If you want to definitize that, throw a load on the battery by doing something like turning on the fan or driving lights while the lights are flickering. I'll bet it changes the rate for a few seconds. If your dealer has some old guy working there I bet he has an old dial voltmeter and he would see the needle move in sync with the flickering you are seeing. The young guys should have something like an oscilloscope to see this. ( He will have to wait until the battery is charged and the regulator is "idling" before he tries this). Hopefully you have not added some 3,000 watt boom box to your electrical system that does massive current draws and GMC won't talk to you. Now for the bad news. Some people are much more sensitive to flickering lights that others. If other people riding with you don't see this flickering, it might just be your sensitivity to differences in light levels. Good luck and let us know how this comes out.
#509 of 1091 2001 Ykon Denali
Dec 12, 2006 (1:52 pm)
Can anyone tell me where the sensor or relay is that tells the rear pump to pumpup the shocks?
#510 of 1091 Heater Defrost Problems
Dec 12, 2006 (3:32 pm)
Hi, I have an 05 Yukon Denali XL and I am having problem with the defrost side of the heater. I took it to the dealer and they told me they thought it was a motor. The main blower motor is working fine. The problem is when I change from floor heat (or any of the other settings) to defrost the air will not come through the defrost vents. It also blows cold air on the passenger side and warm on the driver side when all the way on floor heat. I can hear the air flow change when I switch it so to me it does not sound like a motor problem but an adjustment problem. Is there any adjustment on the internal doors of the heater box? I appreciate any help with this. One side note. This was working fine until I took it to the dealer when it was running rough. They said it was an oxygen sensor and replaced it. It helped somewhat but it is still a little rough. As I left the dealer my windows started fogging and this was the first time I noticed the problem. They said it was not related to what they had done and I really can't see how it would be either but then again???? I would appreciate any ideas or help. Thanks in advance.