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dansdieselp
January 31st, 2011, 03:02 PM
Flashed a good ECM with a dsp5 tune. The oem tune was pulled from customers truck when I saw him last. Shipped him the ECM and switch. He installed the switch and ECM. Truck will crank, but won't start. The truck I used to flash it with started fine. What could the problem be?

Tordne
January 31st, 2011, 03:08 PM
VATS Relearn?

dansdieselp
January 31st, 2011, 03:21 PM
That's kind of what I was thinking, but I would of thought using the oem tune would have avoided that problem. Other thing is the customer is not close to me so doing the VATS relearn would be difficult.

GMPX
January 31st, 2011, 03:38 PM
Dan, the VATS codes for the truck is not stored in the area of the ECM that is reprogrammed, it will still have the VATS codes in it from the truck the ECM came off. A VATS learn (or VATS off) is the only solution.
I am told your customer can do this without a scantool, just key on for 15 mins, key off for 30 seconds, repeat 3 times and it should start.

dansdieselp
January 31st, 2011, 03:55 PM
Thanks Ross. I'll have him try the relearn. If not he's gonna send it back and I'll turn the vats off.

dansdieselp
February 4th, 2011, 08:07 AM
Ross the key relearn worked great. Customer is up and running. Thanks.