GMC C1500 OBD1 Codes

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1993 GMC C1500 CODE 54

1993 GMC C1500
When I Start Engine I Have To Hold The Throttle Open For It To Run. It Runs Choppy And Pops Back Through Throttle Body. It Has Code 54...
3 ANSWERS
Asked by 1wwall

1990 GMC C1500 Code 32 EGR

1990 GMC C1500
Have A Code 32. Have Changed Egr, Egr Solnoid, And Computer. Still Have A Check Engine Light After Run For 10 Minutes. Engine Stumbles...
1 ANSWER
Asked by bcy

No Code 12

1989 GMC C1500
This Truck Has Had The Computer Replaced With A New One(same Prom) And It Still Doz This: High Idle,pinging,dies Check Engine Light Is On...
10 ANSWERS
Asked by chuck921

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