Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2001CHEVY EXPRESS G3500, VAN PASSENGER EXTENDED, 6.5 FREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 4 (ENGINE CONTROLS SELF-DIAGNOSTICS - 5.0L & 5.7L)PROGRAMMINGCRANKSHAFT POSITION SENSOR
2001 Chevrolet Chevy Express G3500, Van Passenger Extended, 6.5 F
Crankshaft Position Sensor
2001 Chevrolet Chevy Express G3500, Van Passenger Extended, 6.5 FSECTION Crankshaft Position Sensor
WARNING: This page is about a different variant/trim than selected.
- Install a scan tool.
- Apply vehicle's parking brake.
- Block drive wheels.
- Close vehicle's hood.
- Place vehicles transmission in Park.
- Idle engine until coolant temperature reaches 150°F (65°C).
- Turn off all accessories.
- Using scan tool, enable CKP system variation learn procedure.
- Apply and hold brake pedal.
- Slowly increase engine speed to 4000 RPM.
- Immediately release throttle when engine speed decreases.
- Turn ignition off for 15 seconds after learn procedure is completed successfully.
NOTE:
If CKP system variation learn procedure cannot be completed successfully, see DTC P0336: CRANKSHAFT POSITION SENSOR CIRCUIT PERFORMANCE .
NOTE:
After ignition switch is turned to CRANK position, PCM must see a change in state of brake switch (released to applied) to run learn procedure. Also, service brakes, not parking brake, must be held throughout duration of learn procedure.
NOTE:
While learn procedure is in progress, release throttle immediately when engine starts to decelerate. Engine control is returned to operator and engine will respond to throttle position after learn procedure is complete.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.