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Chevy Silverado and GMC Sierra Starting Problems



  • 2011 Silverado LS 4.8 Standard Cab. In the past 3 weeks the truck will crank for sometimes over 30 seconds before it will even begin to fire. I can turn the key and it key acts stuck as he engine will turnover without even holding the key. Today I push accelerator to floor and after a few seconds of cranking finally started. Once it starts it runs fine, no noticeable problems. I have a cold air induction hooked up and has been on for over 10 months and has a scat back duel exhaust other than that it is stock. What is causing this??
  • So what was it? I have wrestled with this for a couple years now. It's a pain in the rear. I thought i had something to do with the alarm system. none of my instruments work except for gas and water temp. Thats how i start it though click it till she goes. just interested it's old hat now. should an emergency arise one doesn't want to sitting there twisting away.
  • So yours doesn't crank at all, but some gauges work and the fuel pump cycles? Just no power to the solenoid to turn it over until you wait a few minutes? Does it always start when it's cold?
  • gmcustsvcgmcustsvc Posts: 4,055
    What model year is your truck, tzatina?

    Sarah, GM Customer Service
  • dollddolld Posts: 1
    We were having a no start issue on our 2002 GMC Sierra HD 1500 and found figure that we have to change out the fuel pump.
  • Did you ever figure out what the problem was? I am having exactly the same issue. There is the same intermittent not starting problem.
  • What was the fix? I am having exactly the same problem.
  • Took to dealership, at first thought it was a weak fuel pump. kept overnight to make sure and ran diagnostic on it as the first thing so when cranking might be able to pin point and bang they got it, had to recalibrate computer, ECM was reading low alocohol at 8% and should have been 63%, recalibrated and it is starting as fast as ever. Danny Beck Chevrolet in Sapulpa Oklahoma made it happen. So thankful was afraid cold air induction was the problem.
  • see my post tonight.
  • gmcustsvcgmcustsvc Posts: 4,055
    Glad to hear that Danny Beck Chevrolet took such great care of you and wish you many more happy miles.
    Sarah, GM Customer Service
  • 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.
  • Kirstie_HKirstie_H Posts: 10,810
    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 no later than noon PT/3 p.m. ET on Friday, 1/18/13.

    Need help navigating? - or send a private message by clicking on my name.
    Share your vehicle reviews

  • 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?
  • 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!!
  • gmcustsvcgmcustsvc Posts: 4,055

    If there was anything you wanted to follow up on with your involved dealership(s), we can be reached at (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
  • 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.
  • gmcustsvcgmcustsvc Posts: 4,055
    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 (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
  • manderson91manderson91 Posts: 3
    edited April 2013
    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??
  • dalerhdalerh Posts: 14
    If you saw my post late last year my 2006 GMC Serria 1500 4X4 (only 20K miles) had problems with starting and I found by trial and error. Especially while a tow truck was getting ready to pull it up onto a flatbed he released the parking brake and all of the lights and door chimes came on. Well, the truck started up immediatly. To this day when I push the parking brake pedal in too far the truck will not start. I still do not know what the cause is but it starts every time without the parking brake set. Oh, I also get a message the 4 wheel drive needs service.

    Good luck
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