Question about 1999 Chevrolet S-10 Pickup

1 Answer

Will not stay start just turning over

Here my problem i had an after market alarm system in my s-10 it malfunction and the truck was just turnin over, so i got it taken out still doin the same thing maybe once it will start up an then it will just shut itself right back off. The security lite blinks, i think they tried bypassing that system also stil just turning over, it starts up an just shut back off immeditly, feul pump is pumping check the plugs they firing is there any solution to my problem that any1 can help me with thanks or
if there is any recall about this problem before, plz refer me to it.

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  • 6 more comments 
  • codereddjs Sep 24, 2008

    ok thanks will try that an see what happens from there

  • codereddjs Sep 29, 2008

    ok we tried that still doin the same thing an we changed the crank senser could it be the computer? it just puzzling us

  • codereddjs Oct 03, 2008

    ok thanks we go the security problem sorted out, now the pulse injector is still not workin the hot is coming to the line but seems as if the ground wire is dead any ideas on why its like that.

  • codereddjs Oct 03, 2008

    yea it getin sprak if we put some gas on a cloth an put it near the throttle in the intake system it will start rite uptill the gas burn off but we notice that the injector pulse in not gettin any ground on the ground wire

  • codereddjs Oct 03, 2008

    yeah its a 4cyl

  • codereddjs Oct 03, 2008

    yea the fuel pump is pumping also we think its the pcm, when you say programmed how do we go about doing that? or can we just get another off another same year truck or just buy one would that work

  • codereddjs Oct 06, 2008

    it was the pcm that went bad its up an running now thanks for all the help

  • mmerlin21 Nov 25, 2008

    hello there got the same problem with my chevy S_10 alarm is shutting it down and i have no clue how to prevent it from doing this ,when you disconect the terminal it will reset and allow you to start it one time and it will run but after shutting it off the same is happening all over??? pl some one help !!!

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If the security light is blinking then this is your problem
check the wiring under steering column

Posted on Sep 23, 2008

  • 3 more comments 
  • TripleTauto
    TripleTauto Sep 29, 2008

    if your security light is blinking and not going off you have a security problem.




    1. Ensure that the battery is fully charged.
    2. Use a scan tool in order to clear the Passlock (TM) DTCs.
    3. Turn the ignition switch from the OFF position to the CRANK position, and then to the RUN position. The vehicle will start and then stall.
    4. Leave the ignition ON until the security telltale turns OFF in 10 minutes.
    5. Repeat Steps 3-5 for 2 more times (3 times total)
    6. The Passlock (TM) controller will learn the new data on the next start attempt.
    7. Use a scan tool in order to clear all DTCs.



    you can try this and see if it relearns key

  • TripleTauto
    TripleTauto Oct 03, 2008

    the ground signal comes out of computer.you have a 4cyl? is security light off now? each injector has a seperate driver signal

  • TripleTauto
    TripleTauto Oct 03, 2008

    have you checked to be sure your getting spark?

  • TripleTauto
    TripleTauto Oct 03, 2008

    can you hear fuel pump running? be sure and check all fuses if they are good then probably a bad pcm a 99 will have to be programmed

  • TripleTauto
    TripleTauto Oct 03, 2008

    these later model vehicles have the info programmed into the pcm via the tech2 and computer. the vin options and all that you can probably get one out of a junkyard for same year and same engine but i would still recommend having it flashed with your info

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