Parts for your 2015 Holden Colorado-Oil pump

2015 Holden Colorado oil pump — purpose, servicing and replacement

Based on GM Service Information (SI) for the RG Colorado 2.8L diesel, the Holden Colorado RG workshop manual (Engine Lubrication — Description and Operation), and Holden/ACDelco parts catalogues that list a dedicated engine oil pump for this model, the 2015 Holden Colorado is fitted with an engine oil pump. It’s a core part of the lubrication system and absolutely relevant to the vehicle.

The oil pump’s job is straightforward but vital: it pushes engine oil under pressure through galleries to crank and cam bearings, timing components and the turbocharger, helping keep temperatures in check while reducing wear. Without steady oil pressure, bearings can score, cams can gall, and the turbo can suffer early failure.

On the 2.8‑litre turbo‑diesel used in the 2015 Colorado, the pump is a crankshaft‑driven gerotor unit mounted at the front of the engine. A pickup draws oil from the sump through a strainer