Standard Ignition PC1242 Engine Crankshaft Position Sensor

Engine Crankshaft Position Sensor for GM Applications

Standard Ignition PC1242 is an engine crankshaft position sensor built for direct replacement on a range of late-model GM vehicles. It uses a bolt-on attachment, a single plug-in female connector, and a 3-blade male terminal layout for straightforward OE-style service.

Compatible With Buick Encore GX, Buick Envision, Cadillac CT4, Cadillac CT5, Cadillac XT4, Cadillac XT5, Cadillac XT6, Chevrolet Blazer, Chevrolet Silverado 1500, Chevrolet Trailblazer, Chevrolet Trax, GMC Acadia, and GMC Sierra 1500 applications.

Key Features

• Standard Ignition PC1242 crankshaft position sensor
• Bolt-on mounting for secure installation
• 1 female connector with plug-in design
• 3 male blade terminals
• Direct-fit service part for select Buick, Cadillac, Chevrolet, and GMC models

Detailed Description

The crankshaft position sensor monitors crankshaft rotation and sends signal data to the engine control system for timing and engine management. Standard Ignition PC1242 is specified for 2019-2024 and 2020-2024 GM platforms, including Chevrolet Silverado 1500, GMC Sierra 1500, Cadillac XT4, and Chevrolet Blazer. This part cross-references 12706708 for the same application.

Use PC1242 when servicing crankshaft signal concerns on vehicles such as the Cadillac CT4, Cadillac CT5, Buick Encore GX, and Chevrolet Trailblazer. The connector and terminal configuration support OE-style electrical connection and replacement fitment.

What It Helps Address

• Crankshaft position signal loss
• Engine stalling or intermittent shutdown
• Hard starting conditions
• Rough running caused by incorrect crankshaft timing input
• Check engine light concerns related to crankshaft sensor performance

Installation Notes and Tips

Verify connector style, terminal layout, and mounting method before installation. PC1242 uses a bolt-on design with one plug-in female connector and three male blade terminals, so the harness connection should match the vehicle’s original sensor configuration. Confirm fitment by year, make, and model before service on Chevrolet Silverado 1500, GMC Acadia, or Cadillac XT5 applications.

Quality Assurance

Standard Ignition supplies replacement ignition and engine management components for OE-style service applications. PC1242 is built to match the listed fitment and connection requirements for the covered Buick, Cadillac, Chevrolet, and GMC vehicles.