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Thread: Help, Turned off cruise control

  1. #1
    New Member
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    Default Help, Turned off cruise control

    Somehow in my bumbling key punching I have lost my cruise control. I am not sure if it has to do with tuning or if something is wrong with the truck. Is there a place to turn it on and off with EFI live?

  2. #2
    Senior Member
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    Oct 2005
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    Not really, the only table I am aware of is B0852 max. injected fuel in cruise mode.
    2005 RCSB 2500HD GMC Sierra DURAMAX LLY
    1955 Chevy Truck 1st series, being restored
    2002 Mercedes C270 CDI

  3. #3
    Joe (Moderator) joecar's Avatar
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    Before flashing, did you save a copy of the ECM's tune...?

  4. #4
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    Just to update the thread in case it happens to anyone else, I had loaded a manual trans file into my auto truck so the ecm and tcm were not communicating. Amazingly the truck ran and shifted fine other than the cruise problem.

  5. #5
    Forum tyhee Site Admin GMPX's Avatar
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    General rule of thumb, ALWAYS use the .tun file read from the truck, switching tunes from one truck to another tends to result in tears.

    Cheers,
    Ross


  6. #6
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    I have this problem right now with a customers truck... I Downloaded A modified TCM tune off of diesel place and forgot to save his stock tcm file, sooo now I dont have cruise control because i understand I dont have the right OS, so I am going to try sucking a TCM file out of two other 05 LLYs and try those in it, any other Ideas on how I can fix this issue???

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