Parts for your 2011 Holden Colorado-Crank angle sensor

2011 Holden Colorado crank-angle sensor: purpose, servicing and replacement

Referencing the Holden Colorado RC/Isuzu D‑Max 2008–2012 workshop manuals, GM Service Information (SI) for the LY7 3.6 V6, and the Isuzu 4JJ1 engine service manual, the 2011 Holden Colorado is fitted with a crank-angle sensor (more commonly called a crankshaft position sensor). Both the 3.0‑litre 4JJ1 turbo‑diesel and the 3.6‑litre V6 petrol engines rely on this sensor for engine management.

This little sensor does the big job of telling the ECU exactly where the crankshaft is and how fast it’s spinning. The ECU uses that signal to sync fuel injection and, on the V6, ignition timing. It also cross‑checks with the cam sensor for proper phasing, especially during start‑up. If the signal’s missing or flaky, the ute can be hard to start, stall at idle, misfire under load, or drop into limp mode. It’s a critical piece for smooth running, clean emissions, and decent fuel economy.

There’s no fixed replacement interval, but it’s smart to keep an eye on it as part of regular servicing. Typical warning signs include:

• Crank/no‑start or long crank when hot
• Intermittent stalling or rough idle
• Erratic tacho, poor fuel economy, or sootiness on diesels
• Check Engine Light with codes like P0335/P0336

On the 4JJ1 diesel, the crank sensor sits low on the right‑hand side of the block, on the 3.6 V6 it’s mounted near the crank at the rear of the block. Replacement is generally straightforward: disconnect the battery, unplug the connector, remove the retaining bolt, swap the sensor, lightly oil the O‑ring, refit, and tighten to the spec in the workshop manual. Route the loom away from hot or moving parts and make sure the connector is clean and properly latched. After fitting, some versions may need a crank variation relearn with a scan tool—handy to have done to avoid false misfire detection. Quality matters here: stick with OEM or reputable brands to avoid heat‑soak issues. As a guide, it’s usually a 0.5–1.0‑hour job, and the part typically sits in the AUD/NZD $80–$200 range. During routine services, a quick visual of the plug, harness, and any oil contamination under the bonnet will help catch issues before they turn into a no‑start drama in the driveway.

Popular questions about the 2011 Holden Colorado crank-angle sensor

Where is the crank-angle sensor located?

On the 2011 Colorado 3.0‑litre 4JJ1 diesel, it’s mounted low on the right‑hand side of the engine block. On the 3.6‑litre V6, it’s positioned near the rear of the block by the crank. Access varies by model—sometimes the splash shield or a bracket needs to come off for room.

If in doubt, follow the loom from the front of the engine down the block, or check the workshop manual for the exact spot.

Do these sensors need regular replacement?

There’s no scheduled interval. They’re replaced when faulty. During services, it’s worth inspecting the connector and wiring for heat damage, oil ingress, or chafing. If hot‑start issues or stalling begin to show up—and scan data points to a weak crank signal—replacement is usually the cure.

Does the ECU need a relearn after replacement?

Often, yes. Many GM/Isuzu systems support a crank variation (CKP) relearn via a scan tool. Some will self‑learn over a few drive cycles, but performing the relearn helps avoid misfire codes and ensures crisp starts and smooth running straight away.