Parts for your 2013 Holden Colorado-Temperature sensors

2013 Holden Colorado temperature sensors

Temperature sensors are absolutely fitted to the 2013 Holden Colorado and they’re critical to how the ute runs. Technical references that confirm this include the Holden RG Colorado Service Manual (GM Global Service Information: Engine Controls and Fuel for the 2.8L diesel), GM SI DTC tables showing faults like P0115–P0119 (engine coolant temperature), P0110–P0114 (intake air temperature), P0070–P0073 (ambient air temperature) and P0711 (transmission fluid temperature), plus ACDelco’s parts catalogue which lists replacement coolant and intake air temperature sensors for 2012–2016 RG Colorado models.

On this Colorado, temperature sensors tell the engine and transmission computers what’s going on so they can keep things sweet under the bonnet. The engine coolant temperature (ECT) sensor is the big one: it helps control cold starts, fuelling, timing, idle speed, radiator fan operation, glow-plug strategy on the diesel, and even DPF behaviour. Intake air temperature (IAT) is used for boost and fuel trims, while the ambient sensor keeps the climate control honest. Autos also watch transmission fluid temperature to protect the gearbox under load.

They’re not a “replace every X km” item, but they do need a bit of attention during servicing. It’s smart to scan live data and check the ECT reading from a cold start—it should be close to outside temperature, then climb smoothly. Look over the connectors and wiring for brittleness, oil soak, or green crust on pins. Any coolant seepage around the thermostat housing or sensor boss is a sign the seal needs love. Keeping the correct long‑life OAT coolant at the right concentration also protects the sensor tip from corrosion and scale.

If the Colorado shows a wandering temp gauge, kicks the fan on constantly, is grumpy on cold mornings, drinks more diesel than usual, or drops codes like P0115/P0116, it’s time to test the ECT. On the 2.8L diesel, the ECT sensor is typically mounted in or near the thermostat housing at the front of the head, on petrol variants, it’s in a similar outlet location. Replacement is straightforward: let it cool, relieve pressure, drain a few litres of coolant, unplug, swap the sensor (use the supplied sealant/O‑ring), torque to spec as per the service manual, then refill and bleed the cooling system. Clear codes and recheck live data. For IAT sensors integrated into the MAF/MAP, gentle cleaning with MAF‑safe cleaner can restore accuracy—don’t touch the element. Stick with quality OEM‑equivalent parts, cheapies can read off by a few degrees and throw everything out of whack.

• Common warnings: temp gauge misbehaviour, hard cold starts, poor economy, frequent DPF regens, radiator fans running when they shouldn’t, or ECT/IAT/ambient temp fault codes.
• Good practice: scan, inspect connectors, maintain correct coolant, and fix leaks early.

Popular questions about 2013 Holden Colorado temperature sensors

Where is the engine coolant temperature sensor on a 2013 Colorado?
The ECT sensor on the 2.8L diesel is typically fitted in or near the thermostat housing at the front of the cylinder head. Access is from the top with the engine cover off. On petrol variants, it’s likewise on the coolant outlet/thermostat area. Always confirm exact placement in the RG Colorado service info for your engine code.

What are the symptoms of a failing temperature sensor?
Expect hard or smoky cold starts, high idle, the radiator fan running too often, a jumpy temp gauge, poor fuel economy, or DTCs like P0115/P0116 (ECT) and P0110 (IAT). The auto may also shift oddly if transmission fluid temp data is off. Live‑data checks are the quickest way to confirm.

Do new temperature sensors need programming?
No special programming is usually required. Fit the new sensor, refill/bleed coolant if applicable, then clear fault codes and perform a road test. The ECU will use the new readings straight away. If issues persist, look for wiring faults, poor grounds, or a stuck thermostat.