26th Jun 2010, 13:48

99 Yukon; interior lights come on by themselves, had to pull a fuse to turn them out.

1st Jul 2010, 21:44

I have a 99 Denali, purchased in 2007 with 93,000 miles, and have 127,000 miles now.

The intermittent problem with wipers, stereo, windows and no electricity seem to be the BCM's fault; tapping the center console with my hand almost always jolts the BCM back to life.

Aside from that, I had to replace the AC compressor, driver's door handle, both front speakers, drivers door hinge bushings, drivers door actuator, electrical wire to brake stop switch (chafed itself almost in two) and now I need to replace the intake manifold gasket because of an external coolant leak (dealer quote of $950.00).

Next time I buy, I will look at Toyota hard before I pull the trigger on another GMC.

9th Sep 2010, 15:02

To the guy with the interior light issue. Check and replace all of your door sensors. They are the little nubbies that detect if your doors are open or closed. I have 220k miles on mine and had to replace all of my door sensors last summer. My car alarm would go off in the middle of the night, and I never knew why. The parts are cheap too. Like $4 a piece. Easy to replace too.

20th Oct 2010, 12:09

1999 Yukon - nice vehicle.

I am having one problem - at 60 MPH the truck starts shuddering like it is misfiring. It then downshifts to another gear. The RPM goes to 2000. At about 65 MPH it will smooth out.

Any ideas?

15th Nov 2010, 00:09

Just bought my 2000 Denali this week. She's sweet and I got a killer deal.

It is about to hit 130,000 miles.

My problem is the heated seats both front seats aren't working. :(

2nd Feb 2011, 13:52

I own a 99 Denali with 167890 miles on it. I'm always finding myself pulling out Fords and Dodges to a shop. My GMC is very dependable and strong. It's man made; just keep up with it, they last.

12th Feb 2011, 20:35

Here's a fun one. I just purchased a used 1999 Yukon Denali to haul my dogs around in. Trouble is that if I leave them in the car and lock it, they turn trigger the motion sensor and cause the car alarm to go off.

Question is : where is the motion sensor located, and how do I disable it!

P.S. I love this car!

4th Apr 2011, 00:40

OK, found the motion sensor after noticing that when dogs jumped on the center console, the alarm was more likely to go off. It had to be somewhere near.

After some more searching and using a flashlight, I discovered a tiny hole at the bottom part of the console (next to the CD holder, drivers side facing front, where you can insert a screwdriver and adjust the sensitivity. (Forgot if it's regular or Phillips however). I cranked it all the way counter clockwise, and bouncing puppies no longer turn the alarm on when I leave them in the car.

12th Jun 2011, 19:38

I have the same issue with my 2000 Denali. It is caused by corrosion, and or a bad soldering connection on the circuit board of the BCM "Body Control Module". It is located under the center console. I found this because the problem started when changing CDs in the changer, located in the console. When I slam the console door everything works for a while. Sometimes having a temper is good.

5th Jul 2011, 09:43

It's the BCM body control module.

17th Sep 2011, 18:11

I have a 99 Denali that I bought in 2001. It has been the best vehicle I've ever owned. I drive mountain roads every day, as I work in Yosemite National Park. It has 167,000 miles on her, and I hope I can get another 167,000 out of her.

I've had to replace the water pump, fuel pump, and radiator. Right now I'm having problems with my power windows and wipers (that's what brought me to this great website). I have to replace my brakes almost every year, and tires about every two years. That's due to all mountain driving. And that I drive it hard.

17th Sep 2011, 19:34

After reading this I went out to my Denali, slapped the right side of the console a couple times and everything worked again. Tomorrow I'll remove the cover and check for loose connections. Thanks...

1st Oct 2011, 00:25

I also have a 1999 Yukon that had problem with dome lights. Go to the back doors and open them; you will see a bunch of contact points that make contact when the door closes. Lightly sand the contact points and they should work fine.

11th Oct 2011, 13:54

Does it skip when you first start it?

27th Oct 2011, 19:01

I am having the same problem with mine, and came to find out it is the body control module. My windows stopped working, and my windshield wipers and my radio, and that is what the problem is. And I found out if you bang on the console, where the lil' red light blinks, you can get your windows up if they're stuck down...

20th Dec 2011, 12:03

2000 Yukon Denali bought brand new, having electrical problems with the power locks; they have a mind of the own lock and unlock. Seems to be a common problem, reading through others comments.

12th Jan 2012, 10:46

I'm having the same issues with my truck. Did anyone figure this out?

16th Jan 2012, 12:29

I have a 1999 Denali with 140k miles on it, and had the same problem. It turned out to be the control module... now it's like a new car.

21st May 2012, 19:15

It is the BCM (Body Control Module). I have found that there is a faulty solder joint inside the BCM that tends to heat up, and the contact becomes compromised. I resoldered the joint and mine works fine now. The hard part is getting the BCM out, as it is buried deep in the center console.

11th Oct 2012, 21:23

Had the same issue, I tried everything. It needs 4 pounds to even attempt to blow cold air up front.

12th Dec 2012, 11:40

Hi, I had the same problem. Check the lines under the truck for leaks. I had to replace mine, and now everything works great.

15th Feb 2013, 16:28

You're talking about all regular maintenance except the electrical issues, so your so called problems are not problems, they're just regular maintenance that needs to be done, and if anything else has happened, it's due to you not doing the SCHEDULED maintenance. My friend has one, and at 150,000 his only problem is the transmission spitting out a large piece of metal, but he bought it used, so no idea if previous owner maintained the maintenance schedule, but that is what happens when you buy a used car!

26th Dec 2013, 14:59

What (or where) exactly is the driver's side control panel? Most people that have resolved this same problem (as I also have with the windows, wipers and radio) all seemed to change the BCM (which is in the center console) for the issue to be resolved.

Thanks!

10th Jun 2014, 23:40

Thank you SO much! This problem has been driving me nuts! Now I know where to start. Bless you!