Last post on Apr 04, 2013 at 9:02 AM
You are in the GMC Yukon
What is this discussion about?
GMC Yukon, GMC Yukon Denali, GMC Yukon XL, SUV
#116 of 149 Re: 2010 GMC YUKON:RPM's 4000 upon starting [brewer1]
Nov 27, 2011 (8:41 pm)
We had the same type of problem with our 2003 Yukon and then eventually the speedometer stopped working. Come to find out there was a recall on the instrument cluster panel. So we put it in the shop and had it replaced free. Well it worked fine for a few months but then we started having the same problem again and now our RPM, speedometer and gas gauge have all stopped working but since I have more than 80,000 miles on my Yukon now they will not replace the faulty instrument cluster again. So if your Yukon is under this recall and you choose to replace it just be prepared to replace it again. Evidently even the replacement instrument clusters are faulty. Once your vehicle has 80,00 miles on it you are on your own. Best of Luck to You. Next vehicle I am switching to Ford or Dodge. I haven't had any problems with these make of vehicles.
#117 of 149 Re: 2010 GMC YUKON:RPM's 4000 upon starting [gonzali]
Nov 28, 2011 (6:24 am)
If we could look further into this for you, we're available to do that. Please send us an email with more information about the situation as well as the last 8 digits of your VIN.
GM Customer Service
#118 of 149 2003 GMC Denali same electrical problems
Nov 29, 2011 (12:15 pm)
I own a 2003 Denali and have had the same electrical problems as others have stated. It has been in the shop multiple times due to the fact that after leaving it off for a few hours, I would go to start it and it would have a dead battery. I have had a new altenator, 2 new batteries, new starter, been to multiple "experts", all to no avail (not to mention, i've had to pay for all of this, in my mind, "needless work", since the problem continues. Most recently, my enire instrument panel has died as well. As I type, the truck is in the shop getting the instrument panel repaired/replaced and also checking on the battery drain problem as well. It is so frustrating and I wish I would of gotten rid of this truck a long time ago. It's a shame because I really do like the truck, just not the electrical problems. I hope someone who has had this problem can help. (I read about the negative battery cable and i'm going to try that next)
#119 of 149 Re: GMC Yukon Denali new fuel pump still problems [vodros87]
Dec 12, 2011 (12:54 am)
I assume that the reason they keep telling you that its a bad fuel pump is due to lack of fuel pressure at the engine.
If you are sure it is a fuel delivery problem there are a few things to look at. Mind you, 20-25psi is 'okay' for idling, but no way you are going to get going at that pressure. As an FYI, the minimum freeflow fuel pressure for the fuel pump is 85 psi. The maximum fuel pressure on this unit is 100psi. This is based on Autozones OEM replacement (with new wiring harness) for a 2003 Yukon (and Denali) with the 5.3L (or 6.0L) motor. If you would like to do some research on it, it is an Airtex Master/Fuel Pump E3508M
1. Fuel filter. Seems obvious, but you'd be surprised how much damage a little $10 filter can cause when it stops fuel flow, this SHOULD have been replaced with the fuel pump and should be regularly changed every year.
2. Fuel pressure regulator. Usually vaccuum controlled, if there is a rip in the airline the fuel pressure will not increase to the engine block when throttle is applied.
Those are the cheap ones.
3. Wrong Fuel Pump or bad wiring. There shouldn't be a wrong fuel pump, with 2 shops, but there is a problem with the OEM wiring harness that causes damage to the connector and burn marks. The fuel pump i purchased for my denali about 6 months ago came with a new wiring harness which I had to retrofit onto my old wiring harness and cut some of the bad, brittle wiring off. The bad wiring could be causing resistance on the power to the pump, causing it to spin much slower than it should and not generating the pressure the vehicle needs.
4. PCM/ECU .... or electronic throttle system. If those are bad, you should be pulling a code on your computer, but if the computer is bad, then it may not send a code.
I wish you luck in your endeavors
#120 of 149 Re: My 02 GMC Yukon Denalli XL will lose all power when I try to start. [mb04]
Jan 21, 2012 (6:46 pm)
I have the same problem. I have an 06 and I have changed four batteries since new to no avail.
#121 of 149 Re: 05 GMC Denali won't start - good battery and alt. [jeremy_price]
Jan 22, 2012 (5:59 am)
This sounds interesting. This issue could be a numerous of items that might cause the "no power" at all coming from the source (battery). What I would do first is to check the connectivity between the battery cable (positive) and going to the other end, i.e. starter, computer, etc.. then check your negative cable and see if that is secured on the battery terminal and grounded on a frame or good ground location. To make the troubleshooting a little easier for you, you might want to get a code reader (you plug this into the female plug under the steering column dash area) and if there is an issue with the electrical system in your vehicle, then a code will pop up on the screen, and then look up that code on line and it should indicate to you what and or where the issue is. I hope this helps, but if not drive it in to your GM dealer and let them look at it and let them indicate to you what the issue is at hand.
#122 of 149 Re: 93 gmc yukon [bradley6]
Jan 22, 2012 (6:09 am)
on that iac valve, there are specs of how much that inter sensor should be sticking out while you re-install it back into place. This controls the idle on my 01 GMC Yukon. I suggest you go down to your auto parts store and get yourself a Clinton Service Manual for your yr GMC and this service manual will have pictures of the IAC and the settings it must be at in order for the proper idle functionality. It should be idling between 600-800 in Park or neutral?
I hope this helps you?
#123 of 149 Re: My 02 GMC Yukon Denalli XL will lose all power when I try to start. [thebigman2]
Jan 23, 2012 (9:32 am)
Have you been working with a dealership or Customer Assistance already towards getting this resolved?
GM Customer Service
#124 of 149 Re: GMC Yukon Denali new fuel pump still problems [vodros87]
Jan 23, 2012 (3:12 pm)
I think after you replace the fuel pump you need to reset or erase the code on the computer or else it will continue to repeat the same problem?
#125 of 149 Help me I need my Truck to start
Jan 28, 2012 (12:39 pm)
I have a 2004 GMC Yukon and it won't start. I've change the fuel pump twice, the battery three times, had a major tune up done where it was found that it was flooded. After the tune up still didn't start. My mechanic pulled all the spark plugs out, turned the engine until all the asses gas was out of the chambers, put them back in, still won't start. help me someone i need my vehical.