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1994 GMC C3500 Sierra SL 7.4L Poor Idle Quality, Hesitation, Surge, Stall, Misfire, MIL Lamp on
Posted to GM Driveability on 5/13/2019 9 Replies

This is a intermittent problem. Just when it seems better, it’s acting up, again. Main complaint is stalling. No brainer: replace distributor. I have fixed a lot of TBI sudden stalls with a distributor. No help! Darn! I know vehicle is lean because long te...

9 Replies Received (View Replies)

  Related Documents & Media  1994 GMC C3500 Sierra SL

 
Message Closed w/Summary

car Vehicle Data

1994 GMC C3500 Sierra SL

VIN 1GDJC34N4R
Engine7.4 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / TBI
EmissionsOBD-1 california
SymptomsPoor Idle Quality, Hesitation, Surge, Stall, Misfire, MIL Lamp On
OccursIntermittently
Misc.Was a U Haul Truck.

Trouble Codes

35iac system code
36Iac system code
Message Closed w/Summary

car Vehicle Data

1994 GMC C3500 Sierra SL

VIN 1GDJC34N4R
Engine7.4 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / TBI
EmissionsOBD-1 california
SymptomsPoor Idle Quality, Hesitation, Surge, Stall, Misfire, MIL Lamp On
OccursIntermittently
Misc.Was a U Haul Truck.

Trouble Codes

35iac system code
36Iac system code