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Thread: PCM or not wired right

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  1. #1
    Join Date
    May 2008
    Location
    Kentucky
    Posts
    144
    drive by wire pedal is not from the same exact vehicle, as the engine/computer. The junkyard supposedly took the pedal and module out of a 03 silverado they had.
    Last edited by 468Blazer; 08-10-2008 at 12:51 PM.
    1996 GMC extended cab, 2003 5.3/auto

  2. #2
    Join Date
    May 2004
    Posts
    2,120
    They have to match or it won't start. If it came out of the same vehicle life would be great but there's no telling what they gave you.


    With you getting these codes below I wonder if the module is bad or not the right one for the pcm. Look at all of your wiring real well to make sure one of crimps aren't loose or damaged. You might have to get another module. I could understand 1 bad coil but not all of them. Hell the LS1 will run without a spark plug hood up, just slightly rough.

    1) P0120 TPS/Pedal Position Sensor A circuit malfunction
    2) P0220 TPS/Pedal Position Sensor B circuit malfunction


    97 GMC, 2002 LS6.

    1991 GMC Syclone #1428

  3. #3
    Join Date
    May 2008
    Location
    Kentucky
    Posts
    144
    well I ran the #'s on the TAC module and it is from a 03-04 vehicle. I'm going to order a accelerator pedal sensor and see if this will fix it. I would say more than likely it would be the sensor instead of the whole module. Guess we will see.
    1996 GMC extended cab, 2003 5.3/auto

  4. #4
    Join Date
    May 2004
    Posts
    2,120
    you might be right but you should be able to check ohms and voltage to the sensor to see if your getting a signal.


    97 GMC, 2002 LS6.

    1991 GMC Syclone #1428

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