OEM Chevrolet Astro Crankshaft Position Sensor

Chevrolet Astro Crankshaft Position Sensor Parts and Q&A

• Crankshaft Position Sensor
  12596851
  Q: How to replace the Crankshaft Position Sensor on Chevrolet Astro?

  A:

  Begin by disconnecting the negative Battery Cable along with the ckp sensor harness connector before starting the sensor replacement. To replace the Crankshaft Position Sensor first remove its mounting bolt and then ease the sensor free. The mounting surfaces must be cleaned of burrs before installing the new ckp sensor. After fully seating the sensor inside the front cover maintain it motionless before you tighten the hold down bolt to 20 n.m (15 lb ft). Examine the sensor o-ring for any sign of deterioration along with breaks and fluid leakage. Complete the ckp sensor installation by connecting its connector followed by reconnecting the negative Battery Cable. The ckp system variation learn procedure must always be conducted after removing or installing the ckp sensor.
• Camshaft Position Sensor
  19417445
  Q: How to service and repair the Crankshaft Position Sensor on Chevrolet Astro?

  A:

  To service and repair the Crankshaft Position Sensor, start by placing a scan tool and check powertrain control module (PCM) for dtcs, i.e., if any dtcs other than p1336 exist, refer to the diagnostic trouble code (DTC) list for additional information. Close that vehicle's hood and choose the crankshaft position variation learn procedure on the scan tool and note down fuel cutoff for the engine under consideration. Follow the scan tool's instructions: apply the vehicle's parking brake, block the drive wheels, cycle the ignition from off to on, apply and hold the Brake Pedal, and start and idle the engine, shut off the a/c, and shift to park (A/T) or neutral (M/T). The scan tool will monitor sensor activity on specific components, such as ckp sensor activity (DTC P0335 OR P0336 in the event that an issue is experienced), cmp sensor activity (DTC P0341 in the event that an issue is experienced), and engine coolant temperature, which should be warmed up sufficiently well. After the conditions are met, enable the crankshaft position system variation learn procedure in the scan tool where in the process of making the learn, throttle release as immediately as the engine starts to decelerate allowing the engine control to return to the operator. Slowly bring up the engine speed to the noted rpm while letting off while fuel cutoff is attained. The scan tool will show "learn status: learned this ignition." in case such a message does not appear and no additional dtcs are indicated check for engine mechanical symptoms. If there is a presence of dtc, refer to the dtc list. Lastly, and after successfully completing the learn procedure, turn off the ignition for 30 seconds.