97 Suburban ECM firmware version?

Discussion in 'Chevy Suburban Forum (GMC Yukon XL)' started by fierodough, Apr 8, 2007.

  1. fierodough

    fierodough Member

    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.

  2. unplugged

    unplugged Epic Member 5+ Years 1000 Posts

    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:

    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).

    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
    CK 1998-1999 9359699 4.3L,5.0L,5.7L,7.4L
  3. Cableguy

    Cableguy Epic Member 5+ Years ROTM Winner 1000 Posts

    Are you trying to make sure baseline software is up to date?
  4. fierodough

    fierodough Member

    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?

  5. Cableguy

    Cableguy Epic Member 5+ Years ROTM Winner 1000 Posts

    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...:lol:
  6. fierodough

    fierodough Member

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