Chevy Silverado and GMC Sierra Starting Problems

It seems as the weather has become colder here in KS that the occurrence has become less. But, I've had my truck in the shop more than not for the last 2 weeks for other reasons so I'm not able to gauge how often it occurs recently. Did you ever figure out the issue? I'm still thinking it's a sensor issue associated with engine temp since I've never had it fail to start when the engine is cold.

#475 of 492 anyone shopping? by kirstie_h HOST

Jan 18, 2013 (8:52 am)

A reporter would like to speak to a loyal Chevy Silverado owner who is shopping for a new truck. If you'd like to share your story, please send your daytime contact to pr

edmunds.com no later than noon PT/3 p.m. ET on Friday, 1/18/13.

#476 of 492 Re: I hate Mondays. [cujo1599] by gmc1pkup

Feb 05, 2013 (5:46 am)

Replying to: cujo1599 (Jun 27, 2012 8:25 pm)

Do they found the problem? i have the same with my 2007 sierra and dealer
not able to find any thing unless the truck do that in shop?

#477 of 492 Re: 2008 GMC Sierra will not start...ongoing problem [mkmartin1974] by tiger7cat

Feb 18, 2013 (7:43 am)

Replying to: mkmartin1974 (Feb 02, 2012 7:18 pm)

Hello,

I'm currently having the same issue, started behaving that way 1 year after purchasing it. I have the sierra 1500 4.8L model 4x4, the problem is currently live and I disconnected the battery 1 hour ago, I have yet to reconnect it and give it a try to see if it will start.

Verrrrry annoying, you never know when it will strike, no mechanic ANYWHERE ever found the problem!!

Replies to this message:

gmcustsvc (Feb 18, 2013 9:24 am)

#478 of 492 Re: 2008 GMC Sierra will not start...ongoing problem [tiger7cat] by gmcustsvc

Feb 18, 2013 (9:24 am)

Replying to: tiger7cat (Feb 18, 2013 7:43 am)

tiger7cat,

If there was anything you wanted to follow up on with your involved dealership(s), we can be reached at socialmedia

gm.com (include your name and contact information, the last 8 digits of your VIN and mileage, and a summary of the situation).

Sarah, GM Customer Service

#479 of 492 2011 silverado cold start problems by jwgibson14

Feb 23, 2013 (6:30 pm)

I recently started having issues starting my truck in cold weather. It runs extremely rough for about 30 seconds after it starts when the temperature is below 40 degrees. After about 30 seconds it levels out. I took it to the dealer and they did a great job at performing some diagnostic tests. They found that if they parked the truck in the shop where it stays warm it has no issues starting but if you let it get below 40 degrees it has the starting issue. The only thing they found is that the computer is saying the fuel mixture is almost 70% alcohol and they believe this is what is causing the issue. I have only ever used 87 octane fuel which should not be anymore than 10% alcohol. I have not tested the fuel yet but that is the next step. If the fuel has that much alcohol in it I dont understand how it would even start, and even if it does run why does it only happen when the truck is cold? Has anyone else heard of this type of problem? I have serious concerns that I may be causing serious damage to the engine if it is burning this much alcohol.

Replies to this message:

gmcustsvc (Feb 25, 2013 8:04 am)

#480 of 492 Re: 2011 silverado cold start problems [jwgibson14] by gmcustsvc

Feb 25, 2013 (8:04 am)

Replying to: jwgibson14 (Feb 23, 2013 6:30 pm)

jwgibson14,
Let us know if you want for us to check into anything further with with your dealership (or further document your concerns). We can be reached at socialmedia

gm.com (include your name and contact information, the last 8 digits of your VIN and mileage, and a summary of the situation).
Sarah, GM Customer Service

#481 of 492 Starting problem 2001 silverado ls 5.3l by manderson91

Apr 17, 2013 (4:43 am)

Went to the gas station, started fine. Went to the grocery store right after started then Immediately died. Everything has power and cranks all day but doesnt start. My fuel pump has been whining the last two days, didn't think anything of it. Checks fuses all are good cant tell if the relays are good. When I turn the key I used to hear the pump now I can't.When i turn the key on and off a couple of time it acts like it wants to stArt but the just cranks. Two weeks ago I replace the sending unit so my fuel gauge worked. It's ran fine since but has thrown p0440 cleared it has t come back on. I know its evap but why was it thrown? I'm going to check the connections where I had to splice the wires on the pump. If that's not it what could it be? I'm assuming fuel pump but I wanna be sure before I buy one. Its at 113k 1owner never had a problem other than knock sensor, at 100k i did a full tune up coils wires plugs coolant all fluids ect..... Oh an I'm removing the bed to work on it. Now as we'll the other day I for some odd reason disconnected my battery while my edge programmer was on and now it's not turning on. I checked the cig fuse and its good, any ideas??

Replies to this message:

dalerh (Apr 17, 2013 6:18 am)
- manderson91 (Apr 18, 2013 3:08 am)

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