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2004 Chevrolet WORKHORSE 8.1L Low power
Posted to GM Driveability on 5/4/2011 5 Replies

Calculated load low wot 57% idles smooth mass air flow changed with known good no power feels like restricted exhaust but is not or a bad maf. Under wot o2s are not going rich just switching. Have a lifter noise in engine. Injected fuel no change under load ca...

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car Vehicle Data

2004 Chevrolet WORKHORSE

VIN 5B4MP67GX4
Engine8.1 L / 8 cyl
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsLow Power
OccursAlways
Message Closed w/FIX

car Vehicle Data

2004 Chevrolet WORKHORSE

VIN 5B4MP67GX4
Engine8.1 L / 8 cyl
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsLow Power
OccursAlways