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2001 Chevrolet Silverado 2500 HD 6.0L Misfire, Poor Fuel Economy, MIL Lamp on
Posted to GM Driveability on 10/13/2010 9 Replies

Current problem is missfire cylinder # 1&5 and 4&8 at hwy speeds between [...] under load. Fuel pressure is 60 p.s.i. Switched coils and still had the same cylinders missfire.

FIX posted 11/25/2010

9 Replies Received (View Replies)

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car Vehicle Data

2001 Chevrolet Silverado 2500 HD

VIN 1GCHK29U81
Engine6.0 L / 8 cyl / GAS
Trans5-speed Automatic (Electronic)
DeliveryFuel Injection / SEFI
EmissionsOBD-II Compliant
SymptomsMisfire, Poor Fuel Economy, MIL Lamp On
OccursHot, on Accel, Cruise, Idle, Intermittently
Misc.6.0L Auto Crew Cab.

Trouble Codes

P0300Multiple Misfire Detected