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i have been told so many different things its not funny new crank shaft position sensor i am lost the code is p1335
Vehicle: 1999 gmc jimmy 4.3

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P1335 Crankshaft position sensor

Do the basic check, you need to check for spark and check for injector pulse, if you have neither spark or injector the ECM is faulty. If there is spark and injector you would need to rule out a mechanical condition

​ Behind the harmonic balancer is the crank shaft position reluctor, If the harmonic balancer is not properly secured the reluctor will shift out of position this would result in low power at acceleration , delayed timing and a crank and no start,

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