Question about Pontiac Bonneville
Good Evening. On your Bonneville you will need a 10mm socket (preferrably a deep socket), an extension, a swivel and a ratchet. In the area it is I have found it is easier with an extension. Firmly grasp the neck underneath your oil cap and turn it counterclockwise, and then remove the plastic decorative 3800 cover. Follow the upper radiator hose the one on your right standing in front of the car, once you reach the end where it attatches to the engine that is where your thermostat housing is. From there it is self explanatory, just be sure to always use a new gasket around your thermostat. Good luck and hope this helps.
Posted on Aug 07, 2010
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Posted on Jan 02, 2017
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