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  1. #1

    Default Computer Re-Flash

    As many of you know your vehicle manufacturer can fix many driveability problems electronically. This procedure is known as a re-flash or a reprogram of your computer, similar to a custom tune only done by the dealer or an independent repair shop that has the hardware <usually a laptop> and the software to do it.
    Usually if there's an issue and it's widespread the manufacturer will issue a TSB on the particular problem. If the problem isn't significant you may never know there is a flash for it unless you periodically check TSBs for your particulaar vehicles.

    The re-flash can repair engine, transmission, body and other electrical problems by changing the parameters the computer uses to control various inputs and outputs throught your vehicle.

    As your vehicle breaks in parts start to wear. This can cause unforseen problems such as idle problems, power problems, shifting problems, fuel mpg problems, torque converter problems and emission control problems that may or may not set trouble codes.

    Again this is why you should watch TSB lists for your vehicle to see if a reflash may fix a problem.

    In closing here's something most people do not know. When the manufacturer builds a re-flash they sometimes fix other things without posting a TSB. What happens is the manufacturer's hot line will get dealer techs calling in with problems that are not widespread. If they see a potential problem thay may incorporate a fix that is not listed just to cover the possibility of future problems. So when you get your computer re-flashed there may be several issues reprogrammed without any documentation. Or on the other hand if you have a drivability problem it may not be a bad idea to get your computer re-flashed even though there is no TSB on your particular problem.

    Dealers will not flash your computer unless there is a TSB so if you want it flashed you can take it to an independant shop,,,,,or,,,,,,complain about an issue that IS covered by a TSB.

    2004 SILVERADO 2500HD LS
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  2. #2
    Sr. Engineer ahm1127's Avatar
    Join Date
    Jan 2009
    Pennsylvania, United States


    Thanks for the information. My Jeep needed to be re-flashed and the Jeep dealer in LI, NY had no idea what I was talking about. My friends shop was not able to & told me to go to Jeep. I just switched computers.
    Everyday I wake up is a great day! ;-)
    05' Chevy Suburban, 11' Ford Fiesta

  3. #3


    good info, do you have a specific web site YOU got your TSB's from? and can i take my truck in, and have the dealer check it to see if there is any TSB'S? my truck hasn't been to the dealer since the second week we had it
    Last edited by 5speedsilverado; 07-21-2009 at 05:32 PM.

  4. #4


    Quote Originally Posted by 5speedsilverado View Post
    good info, do you have a specific web site YOU got your TSB's from? and can i take my truck in, and have the dealer check it to see if there is any TSB'S? my truck hasn't been to the dealer since the second week we had it
    Someone posted a site the other day and I was going to save it and I forgot to do so. :(

  5. #5
    Legend unplugged's Avatar
    Join Date
    Sep 2006
    High Deserts of SoCal


    Technical Service Bulletins (TSB) must be registered with the NHTSA. You can find recalls, and TSB's listed at:

    The caveat is that manufacturers do have their own internal Service Bulletins that may not be listed.
    There is no way to happiness....happiness is the way.:yipi:  _vXMYypuKMJFw671uF2ZPhjez_j-atRmcjM2zQKpQi1JSsB75/burb1.JPG
    High Desert SoCal
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  6. #6


    Thanks for the link!

  7. #7


    thanks for the info
    :great:Semper FI

    2008 Vortec 6.0 LT Z-71
    2500 HD "BIG BOY" Truck
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  8. #8
    Jr. Apprentice
    Join Date
    Aug 2006
    hard hittin new britain ct.


    thanks jimmiee
    that confirms that i must get mine to the dealer. it has very poor throttle response and lack of low end power.
    2008 Silverado 2500 HD Crew cab LTZ 6.0

  9. #9


    Great information! Thanks!

    Bobby - North Carolina
    2008 4x4 5.3L V8
    6" Suspension Lift and 1.5" Body Lift
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  10. #10
    Legend 2ToNe04's Avatar
    Join Date
    Apr 2009
    Fresno California
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    nice..... i hate stealership ppl though. :(

    2004 4.8| Custom Paint| Tint| De-badged| Shaved Tailgate| Rollpan| Smoked Tails| Color Matched| Lowered 5/8| Suede Interior| Color Matched Interior| Indash & TVs| Mids-Lows & 2 12" CVRs| 500 & 1100 Interfires| Soundeadener| Outlaw CAI| Magnaflow|
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