Thought it'd be worth a shot asking if anyone has dealt with the problem I'm having right now, 99 silverado with the 5.3. One day I was working on an air line (it's bagged) and I went to start the truck up and it would fire up but then stall out, security light flashing 3 or 4 times and then the battery light. The cluster will light up, but none of the gauges are working. Researched a little bit about the passlock system and thought it had to be reset, went through the reset procedures and nothing worked. So I took it to a tuner and had him delete the vats from the ECM and it fires up and runs. The gauges still aren't working, I've checked and cleaned all of the grounds I could find and even did the splice into the ground from the cluster harness and make a new one trick, still no gauges....anyone have any ideas? Thanks
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