The crankshaft position sensor (CKP) on a 2007 Chevy Silverado is mounted on the front of the engine block, near the crankshaft pulley and timing cover. It reads a tone wheel on the crank to help the engine computer time sparks and fuel delivery.
For 2007 Silverado models with V8 engines (4.8L, 5.3L, 6.0L) the CKP sensor sits on the front face of the engine, attached to the timing cover near the harmonic balancer, with the wiring harness routed toward the passenger side. Some 4.3L V6 variants also place the CKP in a similar front-face location on the timing cover. If you’re unsure of your exact engine code, consult the vehicle’s service manual or a GM parts diagram for your VIN.
Where it sits on different engines
V8 4.8L / 5.3L / 6.0L Vortec
On these engines, the CKP sensor is a small plastic/metal sensor bolted to the timing cover on the front of the block, just above or adjacent to the crankshaft pulley. The electrical connector runs along the front of the engine toward the right side (passenger side) to reach the Powertrain Control Module (PCM).
4.3L V6
For the 4.3L V6 option in some Silverado trims, the CKP sensor is also mounted to the front of the engine block in the timing cover area, with the wiring harness following the same general route to the PCM.
Symptoms of a failing CKP sensor
Common symptoms that suggest the CKP sensor may be failing include difficulty starting or stalling, intermittent no-start, rough idle, misfires, or the Check Engine Light coming on. Diagnostic codes often include P0335 (CKP sensor A circuit) or P0336 (CKP sensor performance). Always verify with a scan tool and a proper test before replacing parts.
Tools and access
To locate, inspect, or replace the CKP sensor, you may need basic hand tools and access to the front of the engine:
- Socket and ratchet set to remove mounting bolts
- Flat-head screwdriver or a small pick to release the electrical connector
- Multimeter or scan tool to check sensor operation (preferred)
- Protective gloves and eye protection
Concluding: When working on the CKP sensor, always disconnect the negative battery lead, and recheck the system after replacement or inspection. A proper test with a scan tool will confirm if the sensor is reading and wiring is intact.
Step-by-step quick guide to locating the CKP sensor
Follow these steps to locate and verify the CKP sensor on a 2007 Silverado:
- Park on a level surface, engine off, and disconnect the negative battery cable.
- Open the hood and inspect the front of the engine where the timing cover and harmonic balancer are visible.
- Look for a small sensor mounted into the timing cover near the crank pulley; it will have a two- or three-wire connector.
- Trace the harness back toward the passenger side of the engine toward the PCM to ensure there are no damaged wires.
- When in doubt, consult the service manual for your exact engine code to confirm the location.
Concluding: After you locate the sensor, you can test it with a scan tool to verify crank pulses, inspect the wiring for damage, and replace the sensor if the signal is missing or out of spec.
Summary
For a 2007 Chevy Silverado, the crankshaft position sensor is mounted on the front of the engine block, adjacent to the timing cover and crank pulley, with the harness routed toward the passenger side. The exact position is generally consistent across the 4.8L/5.3L/6.0L Vortec V8s and the 4.3L V6 variants, though minor mounting differences can exist. Always diagnose with a scan tool and inspect wiring before replacing the sensor.