i have a 06 3800 supercharged grand prix antifreeze pours out when u shut car off

Asked by Apr 14, 2015 at 12:08 PM about the 2006 Pontiac Grand Prix GT

Question type: Maintenance & Repair

.I have replaced the waterpump & it is still leaking only when u shut the car off.

1 Answer

4,465

First of all fine the source of the leak before buying parts, not after. Check the plastic elbows that the heater hoses connect to. They are notorious for failing. Replace them with metal ones. Actually, even if they're not leaking, while you're fixing the actual leak change the plastic elbows as well. They are only a few dollars and its only a matter of time till they fail.

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