2014 Holden Colorado Pricing and Specs

This model Colorado doesn't have a completely clean rap sheet in terms of its long-term reliability, so I'd definitely want to see a complete service history with no gaps or skipped maintenance. Beyond that, manual-transmission versions of this car didn't like towing and had a small gearbox component that could fail requiring a new gearbox.

But even an automatic version was known to have (in some examples) oil consumption problems (Holden's fix was to fit a different dip-stick to alter owners' perception of the consumption). Other problems included leaking coolant plugs, electrical wiring issues and even water leaks into the cabin.

All that said, the Holden was actually an Isuzu D-Max under the skin; a vehicle that has a better than average record for reliability among its peers.

Modern common-rail diesel engines with their sophisticated, multi-pump fuel systems and high-pressure injectors can stop in their tracks for any number of reasons, not all of them electrical. You could start by checking the battery and the charge-rate from the alternator (if the engine will restart). But you also really need to be checking the fuel system and the obvious stuff such as a dud ignition barrel that’s shutting everything down. A simple fuse or relay that controls the fuel pump system could have failed, too, with similar results.

The absolute best advice is to have the vehicle electronically scanned at a workshop with this type of diagnostic gear. By having the vehicle tell you what’s wrong with it, you’ll save a whole lot of time and money replacing random bits and pieces, hoping that you’ve identified the culprit.

Since both variants of Colorado here use essentially the same engine, I’m not sure what sensors would be different and require changing. That said, the MY17 Colorado got recalibrated hill-descent and hill-start functions, so maybe there are some differences there.

The major mechanical difference that I can see between a 2014 and a 2017 Colorado is probably the power-steering. In late 2016, the vehicle switched to an electrically-assisted system in place of the previous hydraulic set-up. So the later engine would probably lack the pulleys and mounting hardware for the hydraulic power-steering pump that your vehicle requires. Perhaps they can be removed from the old engine and fitted to the later one.

Perhaps an easier solution would be to return the engine originally supplied and ask for the correct version for your car. If the engine supplied originally was not fit for purpose, then you’ve every right to ask for a replacement unit that is.