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What could be wrong with heater on a 1998 Buick Regal gs it has climate control and only blows out cold air when set on 90 degrees?


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2005-12-03 22:13:02
2005-12-03 22:13:02

The most common issue is the heater / climate control valve. This can usually be tested in dual mode and checking for change in air circulation.


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take one end of your heater hose off the heater core and run it back to the intake port.

possibly when the a/c is not needed to cool the air temperature you set. The A/C control module has failed, as revealed on a diagnostics check.

There is a fellow on Ebay that repairs these controls. It is easy to remove from the car and he will repair your control and ship it back out in 24 hours. He repaired mine 15 months ago and it still works perfectly. His eBay username is "musclos1" The title on his current ad is "1998- 2000 Buick Regal Century Climate, Heater Control" His current price is 36.95 including shipping.

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I am having the same problem and I WA told it was the heater core. I am going to give that a shot. Autozone has them for $30.00

Why would you even want to do it? It would be very costly to change it to a manual system.

The heater core is mounted to the passenger side firewall on the 1988 Buick Electra 307. The blower motor needs to be removed to access the heater core.

You can't just replace the lights you would have to replace the whole control cluster.

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