i have a leak behind my motor on the passenger side, the heater gets hot and the temp gaige shows ok but im losing fluid somewhere on the back side


Asked by Nov 24, 2013 at 06:03 PM about the Pontiac Grand Prix

Question type: Maintenance & Repair

2 Answers


Probably one of the hoses that goes into the firewall to the heater core is leaking, and or the core itself. Have it checked out.

1 of 1 people found this helpful.

I had that problem with my Grand Prix. It ended up being the heater hose bypass elbows. They are a couple of shitty plastic fittings that become very brittle and crack. I replaced them with Aluminum ones so that wouldn't happen again. Make sure you get them replaced before they catastrophically fail like they did for me. You have to remove the alternator to access them. Part # 47065HP. If you buy it on rockauto.com, you can use my 5% discount code: 1861354412629810. Here's a good instructional video: http://www.youtube.com/watch?v=QldgVWRJQJY

6 of 6 people found this helpful.

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