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Discussion Starter #1
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!
 

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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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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?
 

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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
 

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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...:lol:
 
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