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Thread: Checksum Error after READ ENTIRE?

  1. #1

    Checksum Error after READ ENTIRE?

    I am trying to tune a 2006 Grand Prix and after the read entire finishes I get a CHECKSUM ERROR? Its my buddys car and to his knowledge there was no previous tuner installed into the car. Is this car tuneable?
    2003 Galaxy Silver Limited Edition GTP
    Mods: 2.8 MPS | S2IC | XP CAM | GEN V | 65# | E85 | TOGS | N* TB | HPT PRO | Impala Brakes | BUILT TRANS w/3.29 GRS

    2017 Chevrolet Silverado LTZ 6.2
    Mods: HPT PRO

  2. #2
    HP Tuners Support
    (foff667)
    Bill@HPTuners's Avatar
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    2006 Grand prix are not supported, hence the reason for the error. With that said if you send support the file you read/saved as well as a vcm suite infolog I can at least track any progress on these pcm's.
    It doesn't have to be perfect, it just needs to be done in two weeks...

    A wise man once said "google it"

  3. #3
    Tuning Addict 5FDP's Avatar
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    Most guys with 06-07 grand prix's find a 2004 or 2005 PCM to use.

    The gas gauge will read backwards but thats about the only thing swapping the 2 does.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.