my truck went into a no-start problem with the following symptoms:

theft light came on and then flashed rapidly
check engine light would not go out
would crank but no start
fuel pump relay chattering

after replacing the fuel pump relay, key reader, and checking for engine codes the truck still would not start.

after removing the superchip, all symptoms went away and truck started.

I reinstalled the chip, reset the computer, and it went back to a no-start.

then back to running after removing again.
has anyone experienced this?
what kind of warranty does superchips have on this type of stuff?