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04-08-2007, 03:13 PM #1
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.
04-08-2007, 05:03 PM #2
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
16258835There is no way to happiness....happiness is the way.:yipi:
High Desert SoCal
93 K1500 burb (personal) 350 AT 3" Lift 250K+
02 Honda Civic LX
Looking for a 1990's Miata for an engine swap
04-08-2007, 06:33 PM #3
04-08-2007, 08:13 PM #4
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?
04-08-2007, 08:16 PM #5
04-09-2007, 09:06 AM #6
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