Ways to Replace a GMC Sierra Crank Sensor Removing the Crank Sensor1Lift the car based on directions listed inside the owner's manual and help with jack stands underneath the frame.2Locate the crankshaft position sensor. On eight.1L engines Auto diagnostics, it will be on the rear on the engine above the transmission mounting flange.
On four.8L, 5.3L, 6.0L and 6.2L engines, it is going to be on the side with the engine block above the starter. On all other engines, it'll be subsequent towards the crankshaft pulley on the left (when standing in front on the car and searching toward the engine) side with the engine block.3On four.8L, 5.3L, 6.0L and 6.2L engines, eliminate the starter. Get rid of the two bolts that connect the starter for the engine block. Lower the starter and separate the electrical connector.4Remove the bolt that secures the crankshaft sensor to the engine block.5Remove the sensor from the engine block.
Discard the rubber O-ring.Installing a Crank Sensor6Lubricate the new O-ring with clean engine oil and set up it onto the new sensor.7Slide the new sensor in to the engine block.8Reinstall the bolt that retains the sensor in the engine block.9Reconnect the wiring connector towards the sensor.10On 4.8L, 5.3L, 6.0L and 6.2L engines, reinstall the starter car diagnostic software. Connect the wiring connector towards the starter, then lift it into position. Reinstall the bolts that connect the bolts for the engine block.11Connect a GM scan tool for the vehicle's diagnostic port and run the crankshaft position sensor variation find out process.
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