engine-number
Holden Colorado 7 Engine Number
Use this guide to locate the engine number on your Holden Colorado 7 and line up the right engine-related parts enquiry.
The Holden Colorado 7 was a body-on-frame, seven-seat 4×4 wagon sold in Australia from 2012 to 2016, built in Thailand and derived from the Colorado RG one-tonne ute, with power coming from GM's 2.8-litre turbo-diesel four. In 2016 it was renamed the Holden Trailblazer, so the Colorado 7 and the later Trailblazer are the same vehicle line under two names.
Where to find your Holden engine number
The stamped engine number is on a machined pad on the block. Its location depends on the engine family:
- Inline six-cylinder: on a pad on the right-hand side of the block, above the engine-mount boss.
- V8 (253 / 308, 4.2 / 5.0 litre): on a pad on the left-hand side of the block, above the engine mounting.
- V6 (Buick-derived, Ecotec, Alloytec): on the front left-hand face of the block, below the ignition coil.
- Later V6 and LS V8 models: the build / engine plate sits on the radiator support panel (VT-VZ era) or the passenger-side strut tower (VE / VF era).
You may need to wipe the pad clean to read the stamped number, and on air-conditioned cars the compressor can sit in front of it. Older Holden engines use a capacity-plus-tune prefix (for example 186S or a Q-series V8 code), while modern engines (Ecotec, Alloytec and the LS V8 family) use a GM engine code plus a separate stamped serial.
For the most accurate part match, send us both the engine code or prefix and the full stamped number, along with whether the car is automatic or manual.
On this model
The Colorado 7 uses the same 2.8-litre "Duramax" turbo-diesel four-cylinder as the Colorado RG ute, a GM engine most commonly referenced by the code LWH (worth confirming against the specific vehicle, as diesel outputs and DPF fitment varied across the 2012-2016 run). It is identified by the GM/Duramax engine-family code together with a stamped engine serial number on the block, which is the safest way to confirm the correct unit when ordering long-motor, turbo, injection or ancillary parts. Because the wagon and ute share this engine, most driveline and engine components cross-reference between Colorado and Colorado 7. When enquiring, quote both the engine designation (2.8 Duramax turbo-diesel, typically LWH) and the stamped engine number so the exact variant can be matched.
This page also draws on later year-by-year data for Holden Colorado 7 to cover modern variants.
Frequently asked questions
Where is the engine number on a Holden Colorado 7?
It is stamped on a machined pad on the engine block. Inline sixes are on the right side above the engine mount, the 253/308 V8s on the left side above the mount, and the V6 engines on the front left face below the ignition coil. You may need to wipe the pad clean to read it.
What is the difference between an engine prefix and an engine code?
Older Holden engines use a capacity-plus-tune prefix stamped on the block, while modern engines (Ecotec, Alloytec and the LS V8 family) use a GM engine code plus a separate stamped serial.
Do you match engine numbers to parts?
Yes. Send us the engine code or prefix and the full stamped number, plus whether the car is automatic or manual, and we will match the right engine-related part.
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