02 blazer. Starts but shuts off immediately.

120

Asked by Justin Mar 11, 2021 at 08:20 PM about the 2002 Chevrolet Blazer LT Leather 4-Door 4WD

Question type: Maintenance & Repair

I lost the key so I broke out the ignition.  It fired
right up and stayed running. I shut it off and now it
starts but keeps shutting off. I replaced the
steering column and still does the same thing.  I
also have no communication with the pcm at the
data link connector. Does anyone know if the new
key needs to be programmed or any ideas. Thank
you. I also ran a fuel pressure test on it and got 56
psi.

1 Answer
27,650

oilyspill answered 3 years ago

With everything you've done, I don't know if relearn procedure will help? With passlock, it's the key tumbler that communicates with passlock sensor, not the key. Maybe you damaged that sensor, it surrounds the tumbler. Good luck

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