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have to erase OBD1 codes ?

Discussion in 'General Chevy & GM Tech Questions' started by RATRODKING, Oct 11, 2012.


    RATRODKING Rockstar 100 Posts

    i have a 1990 k1500 4x4 with 5.7. i have been getting a check engine light for the past 4 years, and it was always a 32 code, EGR valve. this week i was getting a 42 code, ignition control unit... i have installed a new EGR valve and ignition module, and think i have it fixed.
    do i have to "erase" the codes, or are they automatically erased once the problem is fixed ?as long as the check engine light dont come on, i assume i am fine ?

    thanks guys

  2. Crawdaddy

    Crawdaddy Thread Killer Extraordinaire Staff Member 5+ Years 1000 Posts Platinum Contributor

    The code should clear itself after it detects the issue's been solved for so many starts, but the quicker and easier way to clear the code is pull the battery cable for a minute.

    RATRODKING Rockstar 100 Posts

    thanks.... i will let it clear itself.... i hate reprogramming my radio. lol
  4. TimTom64b

    TimTom64b Member 2 Years 500 Posts ROTM Winner Gold Member

    I looked this up in the past... And I believe it is three or four starts.

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