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View Full Version : 2004 Silverado cant connect to PCM



99Silver6.0
July 6th, 2007, 01:12 PM
I have a 2004 Silverado, FlashScan V1 and a new VIN lock I just bought. WHen I try to connect... EFI says it cannot locate the vehicle? What is the deal here??

EDIT: Pardon my premature posting... Cig lighter fuse was popped.

Chevy366
July 6th, 2007, 02:04 PM
Turn the key to the second click just before the start position .
You can't connect Scan Tool and Flash Tool at same time , in other words if using Scan Tool you have to Stop it first .