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Things that I know - Answers to FAQs

Discussion in 'General Chevy & GM Tech Questions' started by mjalstad, Mar 23, 2009.

  1. jkeeney

    jkeeney New Member

    HyperTech programmer III

    Hello,
    I just got a Hypertech programmer off eBay and plugged it in and get an error code of 91.:mad:
    Of course it was cheap and buyer beware so I took a gamble.
    I think the old user left the prev VIN info in the programmer -
    Anything I can do? Or am I SOL?:grrrrrr:
    Thanks
    JK
    2003 Tahoe Z-71
  2. canislupis69

    canislupis69 Epic Member 5+ Years ROTM Winner 5000 Posts

    Good post...thanks.
  3. 5speedsilverado

    5speedsilverado Epic Member 5+ Years 1000 Posts

    i thought you could take off the cats in states without emissions
  4. Henchman

    Henchman Rockstar ROTM Winner 100 Posts

    What about the GM model intake? As you said, they all pretty much perfom the same. Who makes the intakes for GM and does anyone have any feedback for these intakes? I love the looks of them. Of course I've got everything GM on my truck so I will still probably fo with GM. - GREAT post by the way, thanks.
  5. mjalstad

    mjalstad Rockstar 100 Posts


    I'm pretty sure code 91 means that it is VIN locked.
  6. jkeeney

    jkeeney New Member

    Vin Locked

    Thanks For the Reply - SOL- You roll the dice on e-Bay.........
    Did not win on that one.:biggrin::biggrin: But if you know that going in ... No foul...
  7. jaridd

    jaridd New Member

    Nice post

    That is too bad about your ebay purchase
  8. 2ToNe04

    2ToNe04 Epic Member 5+ Years 1000 Posts

    nice post but, i have to disagree on some of the stuff but, good post.
  9. jkeeney

    jkeeney New Member

    What do you disagree with?>
  10. Jay

    Jay Rockstar

    Great post.

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