Question about 2003 GMC Sierra 1500

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2003 GMC Pickup died while driving on highway.

Lights work, battery OK (tried jump starting with no results), but won't turn over when key turned----just clicks. Was low on gas but adding gas did not solve the problem.

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  • 1stsgtbang Jan 22, 2009

    while either driving or idling engine dies without warning. Unable to start for several minutes. No spark at first, after a few minutes I get spark and engine starts as if nothing happened. Engine runs fine after it starts, it has happened several time about once a week every 6-8 days like almost clock work. Replaced battery, alternator, starter, ignition coil, distributor cap/rotor, plugs and wires and checked electrical wiring. Still continues. Engine dies without warning, no engine light or warning. Unable to restart. Even when jumped. Fuel okay, good spray pattern, no backfire or hesitation noticed

  • Anonymous Mar 23, 2014

    I get a vibration / noise when making turns. I just drove 900+ miles on a trip and noticed problems when turning into gas stations and today while turning into a parking garage. It feels like the vehicles is starting to jump when making sharper turns and seems to be losing power. No issues while driving on the highway.



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Sounds like your battery is shorted out, you need to replace the battery. If it is shorted, it will not start because the computer is not getting the right voltage.

Posted on Dec 02, 2008


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2003 GMC Sierra died while driving down the highway

hi, the problem you are having sounds like an imobilser problem does your key have a fob that unlocks the doors etc check this is working if it is then the problem could be with the key itself as they are programmed so that if somebody used a different key in the ignition it wouldnt allow the car to start.
The only way of knowing for sure is by taking it to a main dealer because the imobilser problems wont show up on a diagnostics machine the main dealer will be able to test the key or fob for you they should test it for free but if it needs replacing then you will have to pay for this unless its a common fault if it is common problem with that make and model they will replace this for free.

im sorry their is no easy fix for this problem but it is more than likely your imobiliser if it was say something like starter motor your car wouldnt have cut off whilst running so it points to an imobiliser problem so get this checked.

Let me know how you get on or if you require further assistance ok

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Sounds like it may be a loose wire or connection that reacts at a firm bump. I'd check at the starter, and coil. Also check the battery ground at the body and block connections. Hope this will help. Best wishes.

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