Buick Rainier Engine

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The Buick Rainier was offered with 2 different size engines from General Motors. The economy version is the 4.2 liter Vortec straight 6 cylinder engine. This engine was used in GM’s small truck and SUV line. Some examples of that are the GMC Envoy, Oldsmobile Bravada and the Isuzu Ascender.

The larger power plant is the 5.3 liter V-8 Vortec series engine. This gives the buyer the option to pull a large trailer with power to spare. The 5.3 liter engine has been a very successful engine for GM and used in millions of their vehicles.