Parts for your 2020 Holden Colorado-Crank angle sensor

2020 Holden Colorado crank-angle sensor: what it does and when to service it

Yes, the 2020 Holden Colorado is fitted with a crank-angle sensor (also called a crankshaft position sensor). This is confirmed by Holden/GM technical literature: the RG Colorado Workshop Manual includes procedures titled “Crankshaft Position Sensor Replacement” and diagnostic content for DTC P0335 series faults, and GM/ACDelco parts catalogues list a dedicated crankshaft position sensor for the 2.8‑litre turbo‑diesel fitted to 2016–2020 Colorado models. These sources make it clear the sensor is a core input for the engine control system.

On the Colorado’s 2.8‑litre diesel, the crank‑angle sensor monitors the exact position and speed of the crankshaft via a reluctor wheel. The engine control module uses that signal to time fuel injection, run the tachometer, and coordinate with the cam sensor for smooth starting and crisp throttle response. If the signal drops out, the ute may crank longer than usual, run roughly, stall, or not start at all, and will often log a fault like P0335.

It’s not a scheduled service item, but it’s smart to give it some attention during regular servicing. Keeping oil leaks at bay and the connector clean helps the sensor live a long life. If the Colorado has been off‑road or through deep water, a quick look for damaged wiring or grit around the sensor area is worth doing.

• Common symptoms: hard starting, intermittent stalling, erratic or dead tacho, poor fuel economy, check engine light.
• Quick checks: scan for codes, inspect the harness near the rear‑right of the block (close to the bellhousing), look for oil contamination or chafed wiring.

When replacement is needed, use a quality OEM‑equivalent unit. A typical driveway approach involves disconnecting the battery, safely raising the vehicle, unplugging the sensor, removing the retaining bolt, and easing the sensor out. Lightly oil the new O‑ring, seat the sensor fully, refit the bolt to the specified torque (refer to service data), reconnect, and clear any codes. Many Colorados will also require a crank variation relearn with a capable scan tool so the ECU can recalibrate to the new signal. That step helps prevent future misfire flags and random stalling.

If the fault is intermittent, don’t overlook the basics: tidy the loom routing away from heat, ensure earths are clean and tight, and verify battery health. Sorting those can save the sensor from becoming a repeat visitor.

Popular questions

What are the tell‑tale signs a 2020 Colorado’s crank‑angle sensor is failing?

Drivers often notice longer cranking, random stalls at idle, a dead or jumpy tacho, and a check engine light. Fuel economy can slip and throttle response can feel doughy. A scan will usually show a crank signal fault such as P0335 or related codes.

Is it safe to keep driving with a dodgy crank‑angle sensor?

It might run, but it can stall without warning and may refuse to restart when hot. That’s a hassle around town and a real risk when overtaking or towing. It’s best to diagnose and fix it promptly to avoid being stranded.

Does a new crank‑angle sensor need programming?

After fitting, many workshops perform a crankshaft variation relearn with a proper scan tool. It’s quick and helps the ECU sync perfectly with the new sensor, reducing the chance of misfire detection or rough running.