GM Recalls Certain 2001 Heavy Duty Pickups with 8.1-Liter V8 Engines
By: Mike Levine Posted: 11-27-07 07:49 PT
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The National Highway Traffic Safety Administration (NHTSA) is directing the recall of 11,974 2001-model-year heavy duty pickups built by General Motors to fix faulty crankshaft position sensors, under NHTSA campaign ID number 07V521000.

Only Chevrolet Silverado 2500/3500 and GMC Sierra 2500/3500 trucks with 8.1-liter Vortec V8 big block gasoline engines are impacted by the recall.

According to NHTSA's website, the crankshaft position sensor can operate intermittently or fail completely. If the sensor operates intermittently, the service engine light may illuminate and cause the vehicle to run rough or stall the engine. The engine can be restarted immediately or after a cool down period. If the sensor fails completely, the engine will not run.

GM dealers will replace the crankshaft positioning sensor free of charge when the recall begins in December.

2001 was the first model year for the 8.1-liter Vortec V8, replacing the 7.4-liter V8. The 8.1-liter shared its predecessor's valve and bore centers and diameter, but stroke was increased by 9.4-mm for larger displacement and more power. With 340-horsepower and 455 lb-ft. of torque at 3200-rpm, the 8.1-liter motor beat the power outputs of Ford's and Dodge's V10 engines (275hp and 300hp respectively) from the same period.

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