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International Automotive Technicians Network
2004 Chevrolet Express 2500 4.8L Misfire
Posted to GM Driveability on 12/26/2012 32 Replies

Hello fellow techs. I need some suggestions on this van, custs complaint light blinks after driving on highway for a while. sure enough drive @ highway speeds usually 70 mph check engine light blinks. whats odd is you can't feel mis. check codes p0300 random m...

32 Replies Received (View Replies)

  Related Documents & Media  2004 Chevrolet Express 2500

 
Message Closed w/FIX

car Vehicle Data

2004 Chevrolet Express 2500

VIN [No VIN Available]
Engine4.8 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMisfire
OccursCruise, Highway Speeds

Trouble Codes

P0122Throttle Position Sensor Circuit Low Voltage
P0174Fuel System Too Lean (Bank 2)
P0300Multiple Misfire Detected
Message Closed w/FIX

car Vehicle Data

2004 Chevrolet Express 2500

VIN [No VIN Available]
Engine4.8 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMisfire
OccursCruise, Highway Speeds

Trouble Codes

P0122Throttle Position Sensor Circuit Low Voltage
P0174Fuel System Too Lean (Bank 2)
P0300Multiple Misfire Detected