Question about 1991 Chevrolet S-10

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Gm code 15 - 1991 Chevrolet S-10

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Hi Tommy, Your code is low coolant temperature warning, or wiring problem to the same sensor. Regards John

Posted on Oct 27, 2012


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I have a 92 Chevy s10 starts up no problem but once it gets warmed up shuts down and won't start for several hrs. New fuel pump ignition module cap and rotor iac .codes 15 & 45 keep coming up . v6

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Diagnostic trouble codes 15,32

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Try this and see if the codes go away.

1. Re-enter diagnostics via the climate control panel and after all the codes appear you will see .7.0

2. Simultaneously push and hold the OFF and HI (^) buttons on the climate control panel until you see E.0.0 and release both buttons.

3. Turn ignition key OFF, Wait 15 seconds and re-enter diagnostics and see if the codes reappear. If they do NOT reappear, You are good to go.
After you have done this try starting the engine and see what codes re-appear, also run and OBD 2 test of the system at the diagnostic connector, this will give P codes that we are better able to find definitions for, the E codes are unique to just a few GM cars.

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