ZR-1 Net Registry Forums - View Single Post

-=Jeff=- · 02-23-2009

start with lower code # first, then move to the next

make sure the PROM is fully seated in the ECM.. have the battery disconnected to clear codes.. then try again, if 55 reappears it could be a bad burn or checksum in the PROM and might need to be re-burned

I have had that happen numerous times, with the PROm for the car and with stuff at work.. it happens

once 55 is fixed, then see if the others return

02-23-2009	#4
-=Jeff=- Join Date: Jul 2007 Location: Bartlett, IL Posts: 7,158	Re: New Tune on car, problems start with lower code # first, then move to the next make sure the PROM is fully seated in the ECM.. have the battery disconnected to clear codes.. then try again, if 55 reappears it could be a bad burn or checksum in the PROM and might need to be re-burned I have had that happen numerous times, with the PROm for the car and with stuff at work.. it happens once 55 is fixed, then see if the others return __________________ 1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Shelby Series 1 - Wilwood Brakes Custom Interior NCM Lifetime Member #978