coolant loss on a 2006 grand prix.


Asked by Sep 25, 2015 at 06:28 PM about the 2006 Pontiac Grand Prix

Question type: Maintenance & Repair

06 grand prix, 3800 series 3 motor. coolant dripping under car, no signs of where from under hood. hoses are good, water pump gasket looks good. dripping from passenger side. just wondering what else it could be.

5 Answers


That is where the hoses goes into the firewall to the heater core, thats where you leak may be...

2 people found this helpful.
Best Answer Mark helpful

could the heater core leak outside the firewall. they usually leak inside the vehicle. didn't see anything running down the firewall.

2 people found this helpful.

Sure it is not the water pump? They start leaking threw the weep hole behind the pulley under the pump. If it is the heater core leaking outside the fire wall one of the hoses should be wet. Run your fingers along them as far as you can to the fire wall, see if you pick up anything.

2 people found this helpful.

It's most likely the heater hose elbows. It's plastic and cracks easily. Replace it with aluminum ones, Dorman part #47065HP

1 people found this helpful.

Agree with Dorian. The heater hose elbows are about to fail. Replace them right away. One of them will let go, probably withing the next week or so and you'll loose all your coolant and possibly end up stranded and needing a tow truck. Been there, done that, didn't enjoy it.

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