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2004 Chevrolet Silverado 2500 HD 6.6L MIL Lamp on
Posted to GM Driveability on 9/29/2014 4 Replies

Requesting help from the Duramax experts.

I would like to know if there is a easy way of checking the EGR Cooler for being plugged. Not sure if pulling a vacuum on the EGR Valve while opening the EGR Valve Throttle Plate and looking for engine stumble will wo...

4 Replies Received (View Replies)

  Related Documents & Media  2004 Chevrolet Silverado 2500 HD

 
Message Closed w/Summary

car Vehicle Data

2004 Chevrolet Silverado 2500 HD

VIN 1GCHK231X4
Engine6.6 L / 8 cyl / DIESEL
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursIntermittently

Trouble Codes

P0380Intake Air Heater Relay 1 Control Circuit Malfunction
P0404EGR Control Circuit Range/Performance
Message Closed w/Summary

car Vehicle Data

2004 Chevrolet Silverado 2500 HD

VIN 1GCHK231X4
Engine6.6 L / 8 cyl / DIESEL
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursIntermittently

Trouble Codes

P0380Intake Air Heater Relay 1 Control Circuit Malfunction
P0404EGR Control Circuit Range/Performance