Delphi SS12129 Engine Crankshaft Position Sensor

Delphi SS12129 Crankshaft Position Sensor

The Delphi SS12129 engine crankshaft position sensor provides OE-based signal monitoring for vehicles that rely on accurate crankshaft data for ignition and engine management. Built from Delphi’s century of OE experience, it is a direct-fit replacement for select Chevrolet Colorado, GMC Canyon, Hummer H3, and Hummer H3T applications.

Key Features

• Engine crankshaft position sensor for ignition and engine control systems
• Black housing with oval connector shape
• 1 connector, female connector gender, 3 male terminals
• Pin terminal type for OE-style electrical connection
• No wiring harness included
• Package contents: engine crankshaft position sensor and instruction sheet
• Delphi SS12129 cross-references Standard Ignition PC805 for the same application

Detailed Description

Delphi SS12129 is an OE-style crankshaft position sensor engineered for accurate crankshaft signal input on select 2008-2012 Chevrolet Colorado, 2008-2012 GMC Canyon, 2008-2010 Hummer H3, and 2009-2010 Hummer H3T models. The sensor’s oval connector, 3-terminal layout, and female connector design support a direct electrical match to the original configuration. Delphi’s OE heritage is built into the part, reflecting the company’s long history supplying components to major automakers. If you are replacing a failing crank sensor on a Chevrolet Colorado or GMC Canyon, Delphi SS12129 offers the correct fitment profile for those listed applications.

This part cross-references Standard Ignition PC805 for the same application.

Common Problems This Sensor Can Address

• Intermittent no-start or hard-start conditions related to crankshaft signal loss
• Engine stalling caused by inaccurate crankshaft position input
• Misfire or rough-running symptoms tied to timing signal errors
• Check engine light concerns associated with crankshaft position sensor faults
• Cranking without proper ignition or fuel synchronization

Installation Notes and Tips

Verify connector shape, terminal count, and sensor location before installation. Delphi SS12129 uses a single oval female connector with 3 male terminals and does not include a wiring harness, so inspect the vehicle-side connector and wiring for corrosion, bent pins, or damage before connecting the new sensor. Follow the included instruction sheet and clear diagnostic trouble codes after installation if required by the vehicle.

Quality Assurance

Delphi draws on more than 100 years of OE experience, and that background is reflected in the design and application coverage of this crankshaft position sensor. The SS12129 is built for the listed vehicle applications and OE-style replacement needs.