I have a 99 Chevy Silverado w/09379910 OS pcm.Can I full flash a different OS into it so I can use the COS#5? I have an extra 99-02 pcm just in case.I just don't remember if I could do that.................Paul
I have a 99 Chevy Silverado w/09379910 OS pcm.Can I full flash a different OS into it so I can use the COS#5? I have an extra 99-02 pcm just in case.I just don't remember if I could do that.................Paul
You need to be running the 02 F Body OS before you can upgade to COS5. Once you have copied all of your tables over you can full flash that OS in, then upgrade to COS5.
~Erik~
2013 Sonic RS Manual - 1.4L I4T E78, tuned, turbo mods, etc.
2008 TrailBlazer SS 3SS AWD Summit White - LS2 E67/T42, bolt ons, suspension, etc.
2002 Chevy TrailBlazer LT 4X4 Summit White - 4.2L I6 P10, lifted, wheels, etc.
OK I did a full flash and the truck does not start.I'm getting "U1000 Class 2 data link $1A Transfer Case Shift Control Module" Now what................Paul
What file did you flash into PCM? Was it a truck file or a F-body file?
Find a truck file that has OS 12212156 or 12202088 so you can use the COS's....
2008 2WD Ext.Cab Silverado 1500 6.0 V-MAX E38(L76) & T42(4L70E) MAF Only CL Corvette Servo AFE CAI INNOVATIVE LM-2 WBO2
FLASHSCAN V2 & AUTOCAL
Cool....
2008 2WD Ext.Cab Silverado 1500 6.0 V-MAX E38(L76) & T42(4L70E) MAF Only CL Corvette Servo AFE CAI INNOVATIVE LM-2 WBO2
FLASHSCAN V2 & AUTOCAL
Be sure to read this.
COS5:
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