07 yukon starting problem

[iRIDElow]

i have a 07 yukon w/ 32k miles and my problem is occassionally its very sluggish on the start typically not on a cold start, but say i stop and get something to eat and when i come back out an hour or so later to start it i will turn the key and it is either very sluggish, or the starter sounds like its engaged and just turns over and turns over until finally it kicks on. truck is still under warranty soo the dealer is taking the truck every time i have an issue but the problem is the dealer is telling me that they cant fix the problem if they dont know what it is because its not throwing a check engine light or anything of that sort. What im looking for is maybe someone that has had kinda the same issue or someone that can kinda point me in the right direction. the service guy said last time it was there that they tested the starter and it tested fine and also thru in a new battery, but im leaning towards a fuel issue because once it starts it acts like lack of fuel real low RPMs until it boggs up a little but i may be wrong just looking for some help

thanks

 

[dsump]

Yesterday my 07 (29,000 miles) would not start at all. There was plenty of battery power, 12.75 volts and there were no codes. I would turn the key and nothing would happen. No clicking, no sounds at all. So I had my wife turn the key while I tapped the starter with a hammer. Fired right up. Today it happened again. Had to get my 10yr old to turn the key for me while I tapped. I called my dealer and told the service guy the issue. They picked up my Yukon, replaced the starter and returned my ride back to my house, no charges (under warranty). The Service guy told me that the starter was grounding itself out.

 

[iRIDElow]

mine isnt a starter issue tho

 

[GM Customer Service]

i have a 07 yukon w/ 32k miles and my problem is occassionally its very sluggish on the start typically not on a cold start, but say i stop and get something to eat and when i come back out an hour or so later to start it i will turn the key and it is either very sluggish, or the starter sounds like its engaged and just turns over and turns over until finally it kicks on. truck is still under warranty soo the dealer is taking the truck every time i have an issue but the problem is the dealer is telling me that they cant fix the problem if they dont know what it is because its not throwing a check engine light or anything of that sort. What im looking for is maybe someone that has had kinda the same issue or someone that can kinda point me in the right direction. the service guy said last time it was there that they tested the starter and it tested fine and also thru in a new battery, but im leaning towards a fuel issue because once it starts it acts like lack of fuel real low RPMs until it boggs up a little but i may be wrong just looking for some help

thanks

Hello,

Sorry to hear about the troubles you are having. If the dealership can’t figure this out, they should be contacting our Technical Assistance team. I would suggest taking it to the dealership to have them take care of this again. If they have any trouble handling this at that point, please let me know. I will contact them to make sure they get this figured out.

Geoff Allen
GM Customer Service

 

[RegalCavalier]

Does sound like a fuel problem. Should have someone throw a fuel pressure gauge on the fuel rail and see what the pressure is before and after you start. Also, there is a check valve in the fuel line to keep fuel in the fuel rail. If fuel pressure drops rapidly after turning the engine off, it maybe a check valve issue. Check valve is in the fuel pump in the gas tank.

 

[iRIDElow]

Hello,

Sorry to hear about the troubles you are having. If the dealership can’t figure this out, they should be contacting our Technical Assistance team. I would suggest taking it to the dealership to have them take care of this again. If they have any trouble handling this at that point, please let me know. I will contact them to make sure they get this figured out.

Geoff Allen
GM Customer Service

the truck is back at the dealership now for the 3rd time and im still getting the same response since they have had it this time for a week. the problem doesnt happen all the time soo they dont want to spend a lot of time just trying to get it to have a faulty start and its not throwing any codes soo they cant diagnose it which i understand BUT.....when i dropped the truck off they told me to have a tech walk out and show them the starting problem like i was crazy or something and it didnt really happen, and for the first time acctually in front of a tech it started like crap and turned over and turned over and then once it caught the motor started but with a very low RPM like 200-300 then slowly bogged it self up to a normal idle. ive called the dealer 2 times since it has been there this week and both times they have told me that it has given the tech some problems but they cant pin-point the issue soo he just keeps trying diffrent things, and i have no estimated time on when the truck should be done.....im stuck

---------- Post added at 02:38 PM ---------- Previous post was at 02:35 PM ----------

ill PM you GM customer service

thanks

 

[Stompor]

Just had my 07 Yukon towed in for the second time.
When I go to start it, I get nothing, just a single click.

The first time it went in, when they pulled it off the flatbed, it started right up.
The only thing that they thought they could find was "a loose wire".

I asked them to look at replacing the starter this time, we will see.
I bet it will start up fine again after it is dropped off.

Anyone else have a similar problem? Did you get it fixed?

 

[Stompor]

Update

Well my Yukon did not start when the tow truck dropped it off, but did start on the second try by the service tech.

The dealership has agreed to replace the starter even though they have not yet confirmed it is bad.

 

[OklabyGodhoma]

Guys all of these have the same problem and GM won't address it.....they eat batteries due to the "voltage management system" being too frigging stingy. They were great with mine.....gave me a total of 4 batteries while it was under warranty. Never once tried to fix the problem because they can't. The problem stems from Detroit and they don't care about fixing it. A dealership battery is cheaper than mechanic time and your out the door grinning because they gave you a new battery....BFD. Most on here it seems have gone the same way I went, after warranty; Optima Yellow top. It's not because of the cold cranking amps, it's because this paticular battery is a deep cycle battery and will span over those times when the system gets starved. Yea, its an expensive battery and there are other "deep cycle batteries" out there but buyer beware. Know for sure you are getting what you pay for. The nice thing to me about Optima is the warranty...36 months NON-prorated. 35 months and it goes out you get a freeby....NO hassles. Think about it.

 

[SmallXL]

Agree with the battery issue. Just burned another one! I don't have the time to take it to the dealer to have them run a battery check and go in circles (been there done that). Had to buy another battery and suck up the $$$.

 

[Stompor]

I picked up my Yukon from the dealer yesterday, they replaced the starter under warranty. I hope this fixes my problem.

 

[AZSCTACO]

I'm having the same issue as the OP. It's not the battery...it definitly fuel related and not the battery. When I first got the truck I went through 3 GM batteries and then got sick of it and bought an Optima and has been flawless for 3 years.

Anyways....I'm getting the "extended crank" as well and brought it into the dealer and they couldn't find anything wrong. It's almost happening on a daily basis. It seems to do it more after it is heat soaked on a hot day and sits for a little bit after driving it. I've been taking videos of my starts on a daily basis and I included 2 below. Anyone have any ideas or have suggestions on the fix?

http://www.youtube.com/watch?v=y1dGapT6eEQ&feature=player_profilepage

http://www.youtube.com/watch?v=zrp7LvD2pqA&feature=player_profilepage

 

[GM Customer Service]

AZSCTACO,
I would like to have another team look into this for you. Could you please send me your full contact information including your VIN and mileage?

Thank you

Elizabeth, GM Customer Service

 

[AZSCTACO]

AZSCTACO,
I would like to have another team look into this for you. Could you please send me your full contact information including your VIN and mileage?

Thank you

Elizabeth, GM Customer Service

PM sent...

 

[KCFLHTK]

I just bought an 07 LTZ and it does the same exact thing. It was a Certified Vehicle so I have 12 month/12k mile warranty but I'm glad to see others are experiencing this. They put a new battery in it when I bought it so I doubt that is the problem. Please let us know the outcome of the issue. Mine has 50k miles on it.

 

[Mac]

My guess.....

1. Clogged fuel filter
2. Dying fuel pump..maybe? low pressure.
3. No spark....
4. Faulty camshaft and crankshaft sensor....maybe?
5. ECU..acting up and need reflashing

Just my guess from the video..

 

[2007tahoe]

From the video it sounds like the fuel pressure regulator. It is located at the back of the eng and is pretty easy to change. I supprised the dealer just doesn't just try one to see if it fixes it. It will not throw a check eng light. I had a 03 tahoe at the shop do that and that was the fix.

 

[Stompor]

Still having the same problem.
Dealer thinks it is the ground cable, I have to pay the labor for them to change it out. We will see if the $125.00 was money well spent.

 

[AZSCTACO]

**Update**

Just wanted to give an update in case others experience this problem.

I showed the tech the video of my vehicle extended cranking. They tested the fuel pump multiple times and found it bleeding back while hot. They replaced the intank fuel pump module and all is good. We'll see over time but it seems to be good for now.

 

[seagravedriver]

Our 07 had a bad fuel pump. Replaced under warranty, and all is fine.