Keep ignition timing and fuel injection precisely coordinated with the Walker Products Engine Crankshaft Position Sensor 235-1615. It drops in as a direct-fit replacement for the 2008-2009 Chevrolet Trailblazer, 2008-2009 GMC Envoy, and 2008-2009 Saab 9-7X — see the "Vehicles it fits" section to confirm your engine.
This sensor monitors the crankshaft's rotational speed and position, feeding the engine control module the data it needs for accurate ignition timing and fuel injection.
- Core job: tracks crankshaft speed and position and reports it to the ECM for precise fuel-injection and ignition timing.
- Misfire input: helps identify irregularities in engine cycles, aiding misfire detection for cleaner, more efficient running.
- Built to endure: designed to withstand temperature swings, mechanical vibration, and exposure to engine fluids, and to resist electromagnetic interference.
- Works in sync: operates alongside the camshaft position sensor to coordinate valve and piston movements.
Hard starting, stalling, an illuminated check engine light, or an erratic tachometer can be signs a crankshaft position sensor may need replacing — diagnose the cause first, and if this sensor is at fault, the 235-1615 replaces it.
Interchange: 5S12100 · 5S12392 · CSS1818 · SS12133 · 12597254 · EH0049 · EH0054 · PC818 · S10466 · SU13521 · SU13807
This part cross-references / interchanges with the following part numbers:
5S12100, 5S12392, CSS1818, SS12133, 12597254, EH0049, EH0054, PC818, S10466, SU13521, SU13807
Frequently Asked Questions
What does the Walker Products 235-1615 crankshaft position sensor do?
It monitors the crankshaft's rotational speed and position and sends that data to the engine control module for accurate ignition timing and fuel injection.
What vehicles does this sensor fit?
It's a direct-fit replacement for the 2008-2009 Chevrolet Trailblazer, 2008-2009 GMC Envoy, and 2008-2009 Saab 9-7X. Check the "Vehicles it fits" section to confirm your engine.
What are signs I may need a new crankshaft position sensor?
Hard starting, stalling, a check engine light, or an erratic tachometer can be signs a crankshaft position sensor may need replacing. Diagnose the cause before replacing.
Does it work with the camshaft position sensor?
Yes. It operates alongside the camshaft position sensor to coordinate valve and piston movements for precise engine timing.
Can this sensor help with misfires?
It can identify irregularities in engine cycles, aiding misfire detection. If a failed crankshaft position sensor is the cause, replacing it addresses that input.
