Parts for your 2019 Holden Colorado-Crank angle sensor

2019 Holden Colorado crank-angle-sensor: purpose, servicing and replacement

Based on GM Service Information for the RG platform and the Holden Colorado workshop manual for MY17–MY20 vehicles, the 2019 Holden Colorado is fitted with a crankshaft position sensor (often called a crank-angle-sensor). These sources describe diagnosis for DTCs such as P0335/P0336 and outline replacement procedures for the sensor used by the 2.8‑litre turbo‑diesel engine to report crank speed and position to the engine control module (ECM).

This little sensor does big work. It reads a toothed wheel on the crankshaft and lets the ECM know exactly where the pistons are at any given moment. That timing info is what the Colorado uses to fire injectors precisely and control idle, fuel delivery, and emissions. If the signal goes missing or dodgy, expect hard starts, stalling, rough running, or the check engine lamp lighting up.

It’s not a “service item” with a set interval, but it’s worth a look during major services—especially on higher‑kilometre utes that see heat, dust, mud, or frequent towing. The sensor is typically mounted to the engine block and sealed with an O‑ring, heat and vibration can take a toll over time, and oil leaks or harness damage can contaminate the connector.

• Common symptoms: long crank/no start, intermittent stall, uneven idle, poor throttle response, erratic tacho, and fault codes P0335/P0336.
• Basic checks: inspect the wiring loom for rub‑through near brackets, confirm the connector is clean and latched, and look for oil intrusion around the sensor boss.
• When to replace: if confirmed faulty by scan data and testing, or when intermittent signal faults persist after wiring/connector repairs.

Replacement isn’t a huge job for a trained tech. Battery off, vehicle safely supported, connector unclipped, retaining bolt out, sensor withdrawn, O‑ring lightly oiled, and the new unit installed to spec. Genuine or high‑quality aftermarket sensors are strongly recommended to maintain a clean signal. After fitting, a crankshaft variation relearn with a capable scan tool is often required on GM/Holden systems so the ECM can recalibrate to the new sensor’s signal. Finish by clearing codes, checking live data, and road‑testing to confirm stable RPM and clean starts hot and cold.

For owners keen on reliability, pairing sensor checks with periodic harness inspections and staying on top of oil leaks will help the Colorado keep starting first turn and running sweet.

FAQs

Where is the crank-angle-sensor on a 2019 Holden Colorado?

It’s mounted to the engine and points at a toothed reluctor on the crankshaft. Access is typically from underneath, exact location can vary slightly by build, but it’s secured with a single fastener and sealed with an O‑ring. A workshop manual or experienced technician will pinpoint the best access on your specific RG Colorado.

What are the signs the Colorado’s crank-angle-sensor is failing?

Common tells include extended cranking, intermittent no‑start, stalling at idle, uneven running, and the check engine light with codes like P0335/P0336. On scan data you may see an erratic or missing RPM signal during crank. If wiring and connectors check out, the sensor itself is a likely culprit.

Does the sensor need a relearn after replacement?

Yes—on GM/Holden systems a crank variation relearn is usually required after sensor replacement. A capable scan tool runs the procedure so the ECM can accurately map the new signal. Skipping this step can leave you with persistent fault codes or rough running even after fitting a good sensor.