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WHERE IS THE PCM RELAY ON A CHEVY
1990 Chevrolet Truck
December, 5, 2011 AT 1:55 PM
Need to know I have a low voltage detect code
FOUND 165 RELATED QUESTIONS
Injector Relay And Pcm Driver Circuit
F250 Ecm Or Eec Problems
December, 5, 2011 AT 2:28 PM
GM doesn't use a PCM relay. What is your exact code number?
December, 5, 2011 AT 5:01 PM
The code number was 43 however it has dissappeared and the code get now is 12 which means no distributor signal to ECM. Truck runs for a few seconds then stalls. I really need help.
December, 5, 2011 AT 8:55 PM
Code 43 is an EST code. Is the3 code 12 putting the check engine light on?
December, 5, 2011 AT 9:04 PM
No it isn't
December, 5, 2011 AT 9:53 PM
That code is for internal ECU error, not distributor communication with the distributor so you may need an ECU but you need to test for injector pulse and spark first.
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