Question about 2007 GMC Yukon

Open Question

2007 GMC Yukon Starting Problem

Just recently I have been experiencing starting problems. It dosen't seem to be whether the car is hot or cold. The first couple of times I tried starting it and it wouldn't even crank the clock reset to 12:00. After waiting about 20 minutes it starts right up. A couple of times when I tried to start it, it would just go click, click, click. I found the fuse box and relays under the hood. I started pulling them out and pushing them back in and after each one I tried starting until I finally came to one and it started. The next time it wouldn't start I just tried removing and replacing the one that had worked the last time. Well of course it didn't start. I then just started lifting the relays up and putting them back down and it started. It is very frustrating because I am pretty sure it has something to do with a relay not going to it's normal state after the key is turned off. It has always started first thing in the morning and usually after it has sat for awhile. By the way the car has usually been sitting for at least and hour before I have tried to start it and it wouldn't. It doesn't seem to excessively charge after any of these non starting episodes and I had the batter and alternator checked and they are both good. Any suggestion other than taking it to the dealer would be appreciated.

Thank you,

Ron Sliter

Posted by on

  • SuperDave805 Jan 04, 2009

    I too have an 07 yukon and i have come to notice that that voltage on the dash would drop below 14 and i took it to have both alternator and battery checked 2 times already with the end results being it was good. a few months after i purchased it i installed a new cd player and a week ago i turned my vehicle on, put it in drive and it shut off. put it back into park, tried to start and nothing happened. after towing it to a dealer they reset the computer and said new stereo harness can cause comm errors with the comp and it will cause the system to shutdown.????

  • Anonymous Apr 15, 2009

    i have the same problem with the voltage drop. sometimes goes up and down througout a sigle driving time. i still don't have answer but i have heard of this problem before.



6 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

  • 77514 Answers

SOURCE: shuts off while driving. no fuel pressure. pcm fuse blows/ fuel pump relay inserted.

Sounds like the fuel pump is shorted.

Posted on Nov 03, 2008

  • 11 Answers

SOURCE: Problems starting after short trips.

ck fuel pressure

Posted on Sep 13, 2008

  • 373 Answers

SOURCE: go to start and needles on dash bounce as if they have a pulse

I read your problem.
Is there a few step to diagnostic or try to fix your car.

Follow this simple steps.
Inspect the RALAY " Starter relay # 47. or interchange with other one just for testing.
1- Check the Fuse " IGN E Fuse number 22 " 10amp. on under hood fuse BOX fron Neutro swicth
And power to the power to the Neutro safetly switch.
2-- Check the Fuse " CRANK fuse # 17 10amp. Under hood fuse box. 12v. from Ignition switch
3- check the fuse " IGN A fuse # 34 40 amp. under hodd fuse box. Constant 12v. to relay.
With ignition switch in ON position.
Crank Fuse only when you try to start. If no power 12v. come when trying to start.
REmove the steering column covers. to get axces to the IGNITION SWITCH.
Trying to start check if 12 v on the YELLOW wire exist. if not. Check if there a 12v on the RED wire
If not Inspect FUSE # 34.
But if there a power on the red wire But not ON yellow wire Trying to start.

Check the NEUTRO SAFETLY SWITCH. connector under the car. Repair as need.
CHeck the BACK-UP lights, some times come damaged making a short on the Neutro safetly switch. ...

OK.. I hope this help on your problem.
If you need more information letme know.

I'm a Mechanic and have all the information for repair vehicles.

Thank you for use fixya....

Posted on Sep 13, 2008

  • 1374 Answers

SOURCE: 2002 GMC Envoy, i put the key in ignition and

Ignition switch and neutral safety switch. Next time it happens wiggle thekeys in the ignition switch and try to restart.If it starts its probably the ignition switch. Then locate neutral safety switch on brake pedal and put meter on B+ wire from switch to starter relay and see if you get B+ on the would -be- crank. Next locate B+ wire from starter relay to starter hook a meter to it and see if you get B+ on the would -be crank.
Where ever B+ is missing is your problem.

Posted on Apr 14, 2010

  • 4070 Answers

SOURCE: Hi all. I have a '99 GMC Suburban that is having

Hi! Looks pretty much a PCM (powertrain control module) failure. The PCM is like a car's brain that when it fails everything else's fail. As a first course of action I strongly suggest that you have the PCM resetted on the dealership but if ever that the PCM is faulty this will require replacement. Hope this helps and thank you for using FixYa!

Posted on Aug 24, 2010

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

My heater don't work in my 1999 GMC Yukon all it dose it blow cold air

Blend Door Actuator Replacement 1999-2007 Chevrolet ...

? 2:25
Nov 4, 2013 - Uploaded by 2CarPros
My problem in my 2004 chevy tahoe is that it will not blow out of the dash or ... onto the vent door gears ...

GMC Yukon AC and Heat Questions - Car Forums at > Chevrolet > Chevrolet Suburban

Jul 20, 2010 - 30 posts - ‎16 authors
I just don't get why that doesn't work right in the first place. ... I have 99 Yukon that has a problem with the front air. .... $55,000 for my GMC, I guess expecting cold air when we push A/C and getting 90 degree blast ... 2001 Yukon XL 1500 Front heat & air fine, rear ac blows hot as if heater is on in all settings. More results from

Nov 18, 2015 | GMC Cars & Trucks

1 Answer

Engine just stopped while driveing then wont turn over but lots of power gauge cluster seems froozen

Are you live in the states that just had the arctic cold front?
Use a bottle of yellow HEET dry gas to remove any moisture problem in the fuel.

Clean / replace air filter.

Top off ATF to MAX level.

Use starting fluid to aid starting.

Jan 16, 2014 | 2003 GMC Yukon XL

1 Answer

2002 GMC Yukon XL 5.3 Cold start

What happens if you bring power directly to the starter solenoid? Will it crank then? You need to try to isolate the problem. If it will crank with direct power, the starter is NOT the issue. Let us know what you find.

Jan 04, 2014 | 2002 GMC Yukon XL

1 Answer

97 gmc yukon randomnly wont star in mornings. When it dont start I use starting fluid to get it started. What could cause it not to start?

You problems is possibly low fuel pressure due to a plugged fuel filter or a pump in the tank not creating high pressure for cold starts.

Jan 21, 2012 | 1997 GMC Yukon

1 Answer

A/c is not blowing cold air in front but air is cool in the rear.

Hey M, the pressure could be nothing but "hot air" and not freon... (I had this same problem!!) I let off a bunch of pressure..(nothing but clear hot air!!) ..using a small flat punch..on the low pressure side... if freon on comes out right away..stop.. if nothing but hot air comes out.. keep letting it out until freon comes out,,, When mine started letting out freon,, I quit and tried the A/C again... and it has been working fine since.. Just my recent experience!!!!

Jun 27, 2017 | 2001 GMC Yukon XL

1 Answer

04 gmc yukon heater air cold passanger side.

If this happens when you are idle, and then you get hot air as you drive, most likely you have low coolant and it only cycles as you drive. Get approved dextrom gmc coolat and cap off your coolant it is most likely low.

Jan 17, 2010 | 2003 GMC Yukon XL

3 Answers

I have a 2003 GMC Yukon XL that is now experiencing problems with the speedometer. Recently is stopped working. All the other guages work normally. I do not know if it could have something do with the cold...

There was not a recall, but there was a class action settlement where GM agreed to extend the warranty on certain vehicles for this problem. Check to see if you qualify.

Jan 08, 2010 | 2003 GMC Yukon XL

1 Answer

GMC 2001 Yukon XL heater goes to full hot, no control

WellI don't know a whole lot about cars but my 2001 Yukon was doing this exact thing and I took it to the shop and it was the accuator under the seat! It was fairly cheap and now it's working perfect, hope this helps..... oh it was $90.

Oct 08, 2009 | 2001 GMC Yukon XL

2 Answers

2004 GMC Yukon Denali

My wife had same problem in 2005 yukon. Turn both temperture controls on dash all the way as warm as they will go, Wait about 1 or 2 mins and turn back to coolest setting. Cleared our problem right up. Do this with car running and air on.

Oct 02, 2008 | 2005 GMC Yukon Denali

Not finding what you are looking for?
2007 GMC Yukon Logo

Related Topics:

1,304 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts


Level 3 Expert

77514 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22306 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

Are you a GMC Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides