2003 lesabre limited no heat

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laura796
Posts: 1
Joined: Thu Nov 29, 2018 11:28 pm

2003 lesabre limited no heat

Unread post by laura796 » Thu Nov 29, 2018 11:42 pm

Hello,
I have a 2003 buick lesabre limited.. that blows cold air instead of heat. System was flushed about 5 times, we checked the actuator doors- seems to be doing its job- we then changed the heater core, and bled/burped the system to get any air locks out. After it was put together heat worked great for 3 days and now it's back to cold air again.... (oh water pump was also changed) only thing left that we did not change was the thermostat... though, I'm not sure it's the cause. Could another air lock happen days after everything was replaced? This has been a nightmare to figure out!