Edmunds Answers questions

My 2005 yukon xl is having speedometer problems. What is my best bet to fix this?

ryan19 — Thu, 31 Jan 2008 14:50:25 GMT

I will be driving along and look down to see that I'm going 0mph on the freeway. It will stay at 0 or be about 20 mph under what I think the speed is. It doesn't do this on every driving trip, but enough that it is becoming a problem. The local dealership wants $600 to replace the instrument panel to fix the problem. Isn't this something GMC should be covering?

Do I need to worry about water dripping from my tailpipe?

guidare — Fri, 28 Dec 2007 06:50:04 GMT

Water dripping from my GMC Yukon's tailpipe. Sometimes I see water dripping out of my tailpipe. My car seems to run fine but I wonder whether it will affect my engine. What causes this and should I be worried?

I need to lower the front end on my 2006 GMC Yukon by 1 inch. Whats the best/easiest way?

toppdogg326 — Sun, 25 May 2008 22:41:29 GMT

I put a set of BellTech Lowering springs on the rear of my 2006 Yukon. I want to drop the front end 1 inch to level the truck. Whats the best/easiest way to do it?

My 1996 GMC Yukon stock radio plays for about 3 seconds when it is first turned on and then fades and will not play.

dvtnmimi — Sat, 19 Jul 2008 20:09:21 GMT

The radio/cd player continues to play but there is no sound. I have set and disabled the Theft-Deterrent feature and that did not help.

2000 GMC Yukon. No power steering. Replaced pump, gear box and pitman arm. Still no power steering. First pump shaft broke.

adrenelinjunky — Thu, 22 Jan 2009 07:12:21 GMT

first pump went bad while trying to back up a trailer in a tight area( shaft broke) Flushed system and replaced pump, had power steering for about a week, came home and parked truck when I went to go back out no power steering. replaced pump again, didn't fix problem, replaced gear box and pitman arm(arm due to loose fit) still no power steering. There appears to be some sort of flow switch on the pump but cant find any info on it. anyone know what is causing my problem? this is an 2000 Yukon with the 5.3 engine thanks for your time. the electrical connection on the pump appears to go to some sort of switch on the steering column.

Interior brake cable on 2001 GMC Yukon broke. How do I release the foot pedal?

Barry30 — Sun, 08 Feb 2009 01:01:58 GMT

2001 Yukon. The emergency brake pedal has been depressed. When I went to release it the cable broke, leaving the pedal depressed. The actual rear wheel emergency brake assembly is broken so having the pedal depressed doesn't hinder the driving of the truck. However, when driving with the pedal depressed, the emergency brake alarm makes excessive amounts of noise. Is there a way to release the interior emergency brake pedal before I replace the broken cable?

Thanks.

Barry

I have a 2000 GMC Yukon. When I'm braking right, when it's almost stopped it feels like it's skipping or ABS is bad.

daniel45 — Tue, 21 Apr 2009 01:11:10 GMT

Brake or ABS problems no idea.

My 2007 GMC Yukon SLT with 44,000 miles has excessive brake rotor scoring and wear, Brake pads are fine.

jlee11 — Wed, 20 May 2009 16:30:39 GMT

Vehicle driven in South Fla on paved roadways.

2007 GMC Yukon SLE 4x4 front end bounces, porpoises to the point of being unsafe.

downhilldad — Wed, 19 Aug 2009 04:27:07 GMT

I have a 2007 GMC Yukon SLE 4x4 with 32000 miles on it. The front end bounces and porpoises almost to the point of loosing control when I am driving on the freeway and hit rough roads, It jounces (plunges down and then up) at slow speed when going over curbs or speed bumps.. doesn't matter if its empty or fully loaded. My old 2001 SLE (with 170k on it) never had this problem on the same roads.

The dealer check it out and says the shocks are ok, no leaks etc. The GM mechanic that checked it admits it does bounce but doesn't know how to fix it.. any one else have an SLE with this issue.. the car does not have the so called auto ride option..

2009 4X4 GMC Yukon with Goodyear P285/50R20 111h M+S tires off-road?

abadii — Mon, 14 Sep 2009 10:12:22 GMT

I have purchased a 2009 4X4 GMC Yukon equipped with Goodyear P285/50R20 111h M+S tires. The car manual says with 20" tires, it is NOT advisable to go off-road. Is that correct? I occasionally go off-road in deep sand, would these tires be ok?

Will Yukon Denali parts fit on a Yukon SLT?

foxpaw — Sat, 15 Nov 2008 21:37:23 GMT

I have a 07 Yukon SLT and wanted to buy new head light and tail light assemblies and was wondering if the 07 Yukon Denali head light and tail light assemblies would fit my vehicle.

2004 Yukon Knocking

jughead3 — Sun, 03 Feb 2008 21:39:52 GMT

Has anyone experienced a knocking or tapping sound at start up??? The noise fades as the engine warms up, usually 3-4 minutes. Ths occurs inconsistantly and could go a month without happening. It is pretty loud and can be heard equally as loud from both sides and under the engine.

Also does anyone know about coolant loss. I have put 2-3 gallons in over the last 3 months, there appears to be no external loss. Oil looks good as well, however my oil fill cap has condensation on it?????

All serious concerns I should not have with a $40,000+++ vehicle.

Thanks, Mike

I have a 2002 GMC Yukon Denali. The middle row 60/40 Bench won't fold. Nothing appears to be lodged.

kingsolomon — Tue, 11 Mar 2008 15:47:38 GMT

I am unable to fold down the middle bench seats (60/40) in my 2002 GMC yukon Denali. There does not appear to anything stuck or lodged preventing the seats from folding. Has anyone seen this before?

2005 GMC Denali XL has a high pitch whinning sound between 45 -55 mph. Any idea what it might be from?

cramton80 — Mon, 07 Apr 2008 14:13:54 GMT

any idea what causes this or if it can be fixed?

GM Engine Hour Information

fastdog1 — Wed, 09 Apr 2008 09:53:22 GMT

Is there any useful information to use for the engine hour display that GM provides? Since scheduled maintenance is based on mileage or months why does GM give this information. 2005 Yukon, 53,000 miles, 1497.2 hours. Thanks.

Do I need an external transmission oil cooler for towing a 4600 lb GVWR travel trailer with 2005 GMC Yukon XL 1500?

gblackburn — Thu, 10 Apr 2008 00:28:08 GMT

the trailer is a 2007 rockwood 2306 ultra lite and the 2005 Yukon XL 1500 had the towing package installed by the dealership. It has everything except the external mounted transmission oil cooler. Do I need this in order to provide sufficient cooling while towing this trailer?

Having a hard time starting our 2004 GMC Yukon. Runs great after starting. Anyone had this problem?

jenny52 — Sat, 26 Apr 2008 20:37:47 GMT

Our Yukon has become hard to start. It use to start instantly when you turn the key and now you have to hold the key on for a few seconds before it will start. After that it runs good.

I have a 2002 GMC Denali that I jump started with the battery cables installed backwards by mistake. Now it won't run.

tinman1953 — Tue, 29 Apr 2008 00:57:52 GMT

I have a 2002 GMC Denali that had a dead battery , so I jump started it from another car with the cables hooked up backwards by mistake, now the car will start but won't run , it just dies . What's odd is now my remote key button is backwards. The unlock locks the door and the lock button does nothing at all. I also noticed a different kind of bell when you turn the key on now . LOST can anyone help? TINMAN

My 2000 GMC Yukon brake lights went out and it's not the bulb or the fuse, what else could have happened?

croe — Wed, 07 May 2008 00:34:46 GMT

I checked the brake bulbs and they are not out, the fuse is also fine. Is there another source to check?

2003 GMC Yukon XL, fan for front climate control doesn't blow at all, under any setting. Digital display reads ok

otisk — Sun, 25 May 2008 21:30:32 GMT

2003 GMC Yukon XL , the front climate control fan doesn't blow any air, under any setting (heat/def/ etc.)except occasionally. The digital display shows that all is well, but there is no air except a faint breeze when underway. The rear HVAC system is fully functional. The front system still has cool air, so I know the compressor is still doing its job. HELP keep me away from the dealership. Truck has had 78,000 relatively trouble free miles. Thanks so much, OtisK

My GMC Yukon's driver's side window was working fine. Then it stopped all of a sudden with just a clicking sound.

goodjeans — Thu, 19 Jun 2008 11:04:32 GMT

2004 Yukon XL Driver's side window stopped and all i heard was a click when pushing the button. One half hour later the window worked fine again. 6 days later I pushed the power button to it and it went slowly up and then stopped. Please advise. Do I need a new motor? Or what do I need? Thank you.

2002 GMC Yukon Display

emorgan — Mon, 23 Jun 2008 09:47:35 GMT

My Yukon will not display or indicate that it is in 4 wheel high, 4 wheel low, no display for panel or doors ajar. It will dispaly SECURITY and oil change. Nothing else. Any ideas?

2007 Yukon XL Front Blower Problem

jpl7 — Fri, 27 Jun 2008 13:48:10 GMT

I have a 2007 Yukon XL and am having trouble with the front blower. I have checked the fuse and verified it to be OK. I am unable to locate the relay as it is not in the owners manual. Anyone know the location of the relay? Also would like to know if anyone has a wiring diagram they could send me for this. Thanks.

Can my 2007 Yukon Denali XL tow an 8600-lb boat?

jlpetrillo — Tue, 01 Jul 2008 11:23:46 GMT

The info that you read in the owner's manual is different than what the dealership suggests. What else do I need to know/ask? Help!

What is the highway gas mileage for a 1996 GMC Yukon 8 cylinder?

roadchill — Wed, 02 Jul 2008 16:04:13 GMT

Planning a trip

Where can I find a 3rd row bench seat in Ebony for my 07 GMC Yukon XL?

timr3 — Sun, 06 Jul 2008 07:13:22 GMT

I have a 07 Yukon Xl with 3rd row buckets in Ebony.Looking for 3rd row bench seat in Ebony. Would like to buy or trade with someone.

Where can I find a 3rd row bench seat in Ebony for my 07 GMC Yukon XL?

testprojectnow — Mon, 07 Jul 2008 07:29:48 GMT

I tried allot but unable to find. Please help me out of this.

Powerport problems on a 2005 GMC Yukon Denali

talonip — Wed, 09 Jul 2008 11:01:36 GMT

Bought a used denali. I suspect previous front end damage. Only the trunk powere port works. Where can I get info on the wiring for the power ports?

03 GMC Denali makes grinding noise when taking small left/right turns. Been at the dealer 3 times and still not fixed.

bchez — Tue, 22 Jul 2008 16:47:29 GMT

Have an 03 Denali currently has 134,000 miles. When the noise was discovered I still had factory warranty at the time. The truck has been to the dealer 3 times and they are unable to determine where the noise and cause is from. When I make small left and right turns there sounds like a grinding noise but the noise seems to be all coming from the left front tire area. Please help... the noise is more constant now then before. Dealer believes it's safe. How when they don't know the cause. Thanks

03 GMC Denali Popping Noise

bchez — Mon, 28 Jul 2008 13:30:36 GMT

I took my truck into the dealer and asked them once again to find out what the popping noise was that they could not figure out the last 3 times. Since we are going on a road trip this summer want to make sure everything is safe. Well they diagnosed the problem as you said was wrong. I did not inform them of your answer. I drove it to work today for the first time after the repair and there was still a slight popping noise is this something I should bring back up to the dealer that it's still not fixed or could it be another issue? Please advise. Thanks for your help.

Are there ratings for GMC Yukon XL tires for longevity? I have an 03 XL with AWD - stabilitrak 265/70R16.

cfaber1974 — Tue, 12 Aug 2008 15:48:57 GMT

2003Yukon XL - AWD

had BFWilderness Longtrail T/A's and got less than 40K

Adding TVs to overhead DVD system in a 04 GMC Yukon Denali?

wytbrow — Thu, 21 Aug 2008 22:33:17 GMT

I have an 04 yukon denali with a stock panasonic dvd player and want to add two panasonic headrest tvs. Is there a module that plugs into the stock harness or something to create an output for two more tvs from the dvd player?

99 GMC Yukon XL flashers/brakes

lammy2 — Mon, 25 Aug 2008 21:23:49 GMT

obyone,
If I use the hazard flashers or bother the swithch on my 99 Yukon XL, the brake lights won't work. I keep a piece of paper next to the switch to keep the brake lights working properly. Also, there are times when I try to start the engine and it turns over, but will not start. It acts like I have turned it off. If I move the hazard switch it seems to work but then it may or may not affect the brake lights. Could this be just a wire shorting out in the steering column or a problem in the main fuse box under the hood? When I apply pressure on the brake i hear a click noise also. The other day I shut the engine off and after I had the key out I heard several clicking noises and then one louder one. I havent taken it to a dealership yet, was hoping to find some input here. If you have any suggestions please let me know. Thanks

06 GMC Yukon Denali. Does anyone know how to get the DVD player to play over the speakers not the headphones

sk1395 — Thu, 28 Aug 2008 04:58:12 GMT

My husband and i can't figure out how to get the dvd player to play over the speakers instead of the headphones. Our son will not leave the headphones on. Anyone? I've gone through the menus on the touch screen and i can't figure it out. Thanks!!

I have a 2008 GMC Yukon that has a constant "fan" sound when I have my foot on the gas. It's loud enough to annoy me.

jamielou — Thu, 04 Sep 2008 11:56:05 GMT

There is no noise when the engine is simply idling. It is constant and loud enough that I put the radio on so that I dont have to hear it. It sounds like it is coming from behing the navigation system.

My 2002 GMC Yukon Denali XL has a loud grinding noise coming from the rear axle when I start the car or in park.

dipesh — Sat, 06 Sep 2008 12:26:51 GMT

The vehicle runs great, except this gringing noise gets louder and louder, i had the rear hydrolic pump replaced and it lightened the noise for about a month and half. Then the noise came right back. Its coming from the rear axle like its trying to adjust for the weight in the car then it will stop and i noticed my yukon sits 3 to 5 inchs lower then my dads yukon.

I have a 2002 GMC Yukon. what is the part making a constant noise underneath the driver side, behind front tire?

bjho9012 — Sat, 13 Sep 2008 23:14:38 GMT

behind the engine compartment nearly directly under the drivers seat is a part with 4-5 lines coming out of it. when the car is turned off it still makes a ghastly sound...any idea as to what that part is for?

99 GMC Yukon won't run over idle after warming up

zimm828 — Wed, 17 Sep 2008 07:17:43 GMT

1999 Gmc YukonSLT 4WD 5.7L will not run over idle after it is warmed up. You shut off key wait 30 secs and restart and it is fine for about 90 secs then will not go above an idle, Injectoors are fine timing is fine the only thing we can find is fuel pressure is down to about 55 psi but steady. Any ideas? No codes and a garage has looked it over and confirmed all electronics are in proper order.

GMC Yukon 1999 power loss

chris150 — Sun, 28 Sep 2008 20:15:32 GMT

I have a 1999 yukon SLT 5.7l
When i step down on the gas hard/ kick it down( getting on the freeway ) it tends to slip or take a few seconds before it starts to catch and take off. I'm usually going about 20-30-mpr then kick it down. I was told it was the plugs n tune up replaced them, now im doing the fuel filter. Could it be the transmission or any kind of sensor??? any answers would be great....

I have a 2003 GMC Yukon Denali and when I put the rear heat on it blows cold air.

netherwood1 — Wed, 01 Oct 2008 21:07:41 GMT

How can I fix this problem myself with out taking it to a dealer? Is it the heater coils for the rear. If so, where are they located?

I have 05 GMC Yukon. Air duct actuator went bad on passenger side. Only blows hot air. How do I fix this?

giukita — Fri, 03 Oct 2008 12:04:51 GMT

05 GMC Yukon. Air duct actuator went bad. Blowing only hot air on passenger side. Rest of vents work properly. This happened after I disconnected battery and then reconnected. Hopefully someone can help. Thanks

Having a problem pumping gas into an 05 GMC Yukon Denali. It backs up and stops pumping.

rodneyy777 — Wed, 08 Oct 2008 12:46:01 GMT

when i pump gas it cut off at $2.57 than have to reset it again and it still do the same thing

I have a 2003 GMC Yukon Denali and recently it says reduced engine power. What can I do?

sonjc — Wed, 08 Oct 2008 14:13:22 GMT

now the engine light wont go off i recently changed the oil and no such luck still there

What causes an err message when I try to play any cd in a GMC Yukon and how do I fix it?

brandon119 — Thu, 09 Oct 2008 16:00:40 GMT

recently the cd player stopped working properly and an err message comes up on the display and ejects the cd. Until the other day i had to keep a cd halfway in the drive so that it would no try to take a cd in or eject it when the car was off as to not run down the battery. I have not been able to find out what causes this problem or how to fixit

I have a 03 GMC Denali and 8 months ago I replaced my battery due to my alternator shorting out. Now my alternator shorted again.

scuba8 — Sat, 11 Oct 2008 16:33:45 GMT

In February 2008 my battery died due to my alternator shorting out. I replaced the battery and the GM dealership installed a new alternator under warranty. Just this month I was driving home when my battery light turned on and the display read "battery not charging" would come on. I took my vehicle to the nearest GM dealership and they replaced the alternator with a new one under warranty due to it shorting out again. I haven't jump started any vehicles. Why is my alternator shorting out within 8 months? What causes an alternator to short out? Has anyone else had this problem with the GMC Yukon Denali?

2000 GMC Yukon Denali. How to take off front headrests? No button found.

convictedpuppy — Sun, 19 Oct 2008 14:56:08 GMT

Can't figure out how to take headrests off front seats. There is no button I can see, and it appears my seat covers were sewn in place around the darn things!

New GMC Yukon. Do I hit the 4WD button while moving or in a stationary position? Thank you.

goodjeans — Mon, 20 Oct 2008 08:30:22 GMT

I have a new Yukon. It has buttons rather than a stick for 4wd H and L as was the case in my older Suburban. Do I hit the 4wd button while moving at a slow pace or push the button while in a stationary position? Please try to reply before the first Pennsylvania snow. wink. Thank you.

08 Yukon Denali. How do I replace the batteries in the wireless headphones for the DVD system?

bcolombo1 — Thu, 06 Nov 2008 14:55:18 GMT

I have an 08 Deanli and the wirless head phones are dead...I would think it would be easy to replace the batteries, but can not figure it out...there are a couple of screws, but I can;t believe I need to take them apart to replace batteries...please advise.

Why would a heater only blow cold air? Is there a door for the heater core to get air to it? 95 GMC Yukon SLT.

remsjackson — Sat, 08 Nov 2008 11:53:39 GMT

95 GMC Yukon SLT 4x4 5.7L Rear Barn doors with ac
My heater only blows cold air, The heater valve has been replaced because it was leaking. The old valve had a vacuum line fitting going to it but I have not been able to locate the source of the vacuum. I have the valve wired open by no heat. The blower comes on at all required speeds. The mechanical mechanism open and closes the doors in the center of the dash.

Really not looking forward to winter in PA without heat!!!

Where is the speed sensor on a 2003 GMC Yukon?

rbutron — Tue, 11 Nov 2008 18:22:44 GMT

trying to find the speed sensor on my 2003 gmc yukon.located the transfer case and tranny but could not find it.Any one know where exactly it's at?