Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
with the key ON is the check engine light lit up in the dash ?
no spark out of the coil and NO injector pulse ?
fuel pressure ? fuel pump running when cranking it over ?
ok but the computer is running the pump when cranking it over ?
if so then with the key ON does the pink wire at the coil and the ICM show 12 volts with the key ON ?
does the black/white at the ignition module show a confirmed good ground ?
if so disconnect the ICM with a meter set to DC one lead to the white wire terminal and other meter to the black/white wire terminal what does it read for volts when cranking it over ?
we have to see if we are getting a 1 - 4 volt reading when cranking it over
if nothing then that white wire is bad between the computer and the ICM or the computer is missing a power or ground
if it has that then plug back in the ICM and unplug the coil connector with a test light connected to battery power when cranking it over does the white/black wire terminal blink the test light ?
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sounds good i will respond back as soon as i can to you tomorrow
at the crank sensor with the key ON none of the wire terminals show 12 volts ?
if the pinks at the coil and the ICM show 12 but the pink at the crank sensor does NOT show 12 volts that pink wire is bad between the crank sensor and those 2 pink wires for the ICM and the coil
if you can find it bad just run a new wire from the crank sensor pink to the pink on the ICM and it should have spark and run once that is fixed
the other 2 wires at the crank sensor you mean ?
it will not have the 1 - 4 volts with NO crank sensor trigger
the 1 - 4 will come back once the crank sensor is triggering once that wire is fixed or restored to 12 volts
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now the crank sensor shows 12 volts at it ?