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1995 GMC Sonoma SL 4.3L MIL Lamp on
Posted to GM Driveability on 9/29/2004 7 Replies

This truck came to me with the mil on and the three codes mentioned. When I clear the codes it can take as much as 500 miles for the mil to come back on. The owner has no drivabillity complaints. Yesterday I peeled the insulation back from the main wire harnes...

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  Related Documents & Media  1995 GMC Sonoma SL

 
Message Closed w/Summary

car Vehicle Data

1995 GMC Sonoma SL

VIN 56S8512738
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / TBI
EmissionsNot OBD-II Compliant
SymptomsMIL Lamp On
OccursIntermittently
Misc.4WD

Trouble Codes

P0141Heated Oxygen Sensor (Bank 1 Sensor 2) Heater Circuit Malfunction
P0401EGR System Insufficient Flow Detected
P1442EVAP Vacuum Switch Circuit Malfunction
Message Closed w/Summary

car Vehicle Data

1995 GMC Sonoma SL

VIN 56S8512738
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / TBI
EmissionsNot OBD-II Compliant
SymptomsMIL Lamp On
OccursIntermittently
Misc.4WD

Trouble Codes

P0141Heated Oxygen Sensor (Bank 1 Sensor 2) Heater Circuit Malfunction
P0401EGR System Insufficient Flow Detected
P1442EVAP Vacuum Switch Circuit Malfunction