Battery cable disconnect

[MMM]

I am posting this on the C5 forum as I own an '02, but it applies to all Corvettes that have computers, be they power train, ABS, Body, etc. Please remember when disconnecting and especially when reconnecting the battery to always disconnect the negative first and reconnect it last. This may be redundant to most but I had to replace the PCM in a vehicle today because the owner reconnected the positive cable last and seemingly caused a voltage spike that wiped out the computer. It was a costly mistake! Car ran great but had in interior light that would not go out, so he kept the battery from running down (for about a week) by disconnecting the positive cable overnight. Then one morning after reconnecting the cable he had no fuel pressure or spark. Traced it to a dead computer. Replaced the computer, car started immediately and ran great. I checked for any codes and there were none. Please learn from this lesson!