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  1. #1

    Default 97 Suburban ECM firmware version?

    Does anyone know what is the latest firmware for the ECM of a 97 Suburban (K1500 4X4) 5.7l vortec.

    I have an elm327 based scanner. If i can findout the different version of firmware and then take it to the dealer fo a re-flash.

    Also if there is such a thing, a list of what was changed in each firmware revision.

    Cheers!

  2. #2
    Legend unplugged's Avatar
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    Default

    While I'm no expert on this, the 97 came with OBDII and a PCM, not an ECM. Some good info is available at FIS.

    If I keep my 93, I expect I'll give reprogramming the ECM a try, but I am considering buying a 96 with a big block and working with a programmer like the Hypertech.

    From: Fuel Injection Specialties

    Electronic Control Module(ECM) The ECM's provided with the original equipment MPFI systems are indicated below:

    ECM
    Y=Corvette F=Camaro ,Firebird, Trans-AM CK=GMC, CHEV trks
    Model Year GMpartNo Engine
    F,Y 1985 1226870 5.0L/5.7L
    F,Y 1986-1989 1227165 5.0L/5.7L
    F 1990-1992 1227730 5.0L/5.7L
    Y 1990-1991 1227727 5.7L
    Y 1992 16159278 5.7L LT1
    F 1993 16159278 5.7L LT1
    Powertrain Control Module (PCM)

    The PCM is a programmable computer and does not contain a EPROM or calibrator as did its predecessor. The PCM contains a Electronically Eraseable Programmable Read Only Memory (EEPROM). This unit must be programed before being placed in service. These Units can be re- programed for any engine / transmission combination. All of these units are Sequential Port Fuel Injection (SEFI).

    PCM
    Model Year GMpartNo Engine
    BF 1994-1995 16188051 5.7L LT1
    Y 1994-1995 16181333 5.7L LT1/LT4
    F,Y 1996 16214399 5.7L LT1
    F 1997 16242921 5.7L LT1
    F,Y 1997-1998 16238212 5.7L LS1
    CK 1996-1997 16229684 4.3L,5.0L,5.7L,7.4L
    16216568
    16244210
    CK 1998-1999 9359699 4.3L,5.0L,5.7L,7.4L
    16250279
    16258835
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  3. #3

    Default

    Quote Originally Posted by fierodough View Post
    Does anyone know what is the latest firmware for the ECM of a 97 Suburban (K1500 4X4) 5.7l vortec.

    I have an elm327 based scanner. If i can findout the different version of firmware and then take it to the dealer fo a re-flash.

    Also if there is such a thing, a list of what was changed in each firmware revision.

    Cheers!
    Are you trying to make sure baseline software is up to date?



    Jamie

    2007 Ford E250(Work van) (Ya, Ya, shut up!)
    1996 GMC Sierra SLE 1500 5.7L/4L60E

  4. #4

    Default

    Quote Originally Posted by Cableguy View Post
    Are you trying to make sure baseline software is up to date?

    Exactly. I wasn't aware there was a difference in terms with ECM / PCM. I gguess I'm old school. I know that GM from time to time have "upgrades" to solve drivebility issues ect.. I want to make sure it's up to date and from there tweak a little.

    So... What version PCM software is the latest?

    Cheers!
    Eric

  5. #5

    Default

    Quote Originally Posted by fierodough View Post
    Exactly. I wasn't aware there was a difference in terms with ECM / PCM. I gguess I'm old school. I know that GM from time to time have "upgrades" to solve drivebility issues ect.. I want to make sure it's up to date and from there tweak a little.

    So... What version PCM software is the latest?

    Cheers!
    Eric
    I'm not so sure they release that kind of info. I took my TB in couple of months back and the dealership did it for free after oil change. I was missing 3 updates. As long as they get your baseline good, who cares...

  6. #6

    Default

    Found the answer in another forum!

    Here is the link if anyone else needs the info as well.

    http://tis2web.service.gm.com/tis2web

    Cheers!
    Eric

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