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1981 Chevrolet Monte Carlo 3.8L MIL Lamp on
Posted to GM Driveability on 5/4/1999

Hello Techs, This vehicle has MIL lamp on all the time. Tested power to terminal ECM terminal C and R has battery voltage. Voltage drop to ground A and U at ECM .01v. It will flash code 12 and, code 51 with PROM removed, no light with ECM disconnected KOEO...

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Message Closed w/FIX

car Vehicle Data

1981 Chevrolet Monte Carlo

VIN 1G1AZ37K6B
Engine3.8 L / 6 cyl
SymptomsMIL Lamp On
OccursAlways
Message Closed w/FIX

car Vehicle Data

1981 Chevrolet Monte Carlo

VIN 1G1AZ37K6B
Engine3.8 L / 6 cyl
SymptomsMIL Lamp On
OccursAlways