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    anne4169's Avatar
    anne4169 Posts: 4, Reputation: 1
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    #1

    Jun 7, 2010, 09:12 PM
    GMC Sierra 1500 truck won't start
    My truck will not start. I have changed the fuel pump and it still won't start. It has spark and turns over but will not start. Anyone have any ideas on what it could be
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
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    #2

    Jun 8, 2010, 05:51 AM

    What year? Depending on the year, replacing the Ignition Control Module (ICM) frequently solves this problem. The microchip inside fails, due to heat, and it does not fire when the ECM wants it to.
    anne4169's Avatar
    anne4169 Posts: 4, Reputation: 1
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    #3

    Jun 8, 2010, 02:28 PM
    It is a 1996 GMC Sierra 1500 has 277,000 miles, I was driving and lost power and then it would not start does turn over though
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
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    #4

    Jun 8, 2010, 02:45 PM

    What size engine? V-8?

    Sounds like classic ICM failure. At AutoZone, they cost $72 and it will take you 3 minutes to install it yourself.
    anne4169's Avatar
    anne4169 Posts: 4, Reputation: 1
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    #5

    Jun 8, 2010, 02:58 PM

    No it's a V6 where is the ICM located at on the truck
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
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    #6

    Jun 8, 2010, 03:04 PM

    Go to AutoZone.com and look at what DR178 looks like. This will help you locate it on your engine. It is normally located right around the coil. From afar, that's my best guess.
    anne4169's Avatar
    anne4169 Posts: 4, Reputation: 1
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    #7

    Jun 8, 2010, 03:59 PM

    OK I will try that someone else said something about a spider might need to be replaced but this sounds cheaper so I'll go with it first thank you
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
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    #8

    Jun 8, 2010, 04:11 PM

    Here's a link that may help:

    https://www.askmehelpdesk.com/cars-t...ml#post2123675
    lorettacase's Avatar
    lorettacase Posts: 1, Reputation: 1
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    #9

    Oct 15, 2011, 06:07 PM
    My 1997 gmc seirra truck won't start,we were driving and it just shut off from us,and it has not started since then.trying to start it but it will not start,it wants to start but some how it will not.we've replace a lot of parts,such as distributer cap ,rotor,timing set,pickup coil,ignition relay,module,fuel pressure regulater,fuel pump,strainer, fuel filter.please help me with some information!
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