07 grand prix water issues

85

Asked by Aug 15, 2012 at 12:30 AM about the 2007 Pontiac Grand Prix Base

Question type: Maintenance & Repair

Antifreeze is leaking replaced water pump, still leaks and overheats.

6 Answers

6,725

where are the leaks? is it a AC/Delco pump? you should get a GM stock pump. use permatex sealant around the gasket too.

6,725

it could be the intake manifold or the timing chain cover area too.. check the source.

85

It's a Oreillys pump of some sort. And the leak is low and behind the belt area. Kinda flows over the power steering pump.

1 out of 1 people think this is helpful.
6,725

heater core hoses leak? check them; hoses lead to firewall..

30

Mine was leaking after my water pump and before. Turned out the L shaped plastic pieces that go into the water pump were cracked. They are made of plastic. I have a 2006 Pontiac Grand Prix.

2 out of 2 people think this is helpful.
735

the small plastic piece is called coolant bypass tube, usually just a press in fit with o rings on each end common issue on all series 1 2 and 3 engines

6 out of 6 people think this is helpful.

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