Buick Climate Control

My 1990 Riviera Over Heats Only With The Ac On In Heavy Traffic. The Fans Apear To Be Working (they Are Electric). What Can I Do?

Put Antifreeze In But Still No Heat Only Blows Out Cold Air. Don't Know What Is Going On With My Heating. Please Help?

A/c Get Cold In The Morning And Cool In The Mid Day And Cold At Not.

Hi, Hard To Set To Specific Temperature. Can Get Hot Or Cold But In Between Temperatures Are Difficult To Regulate.

A/c Compressor And Heater Work And The Blower Motor Turns On. But Cannot Feel Any Air Coming Out Of Vents With A/c And Heat On. Defrosters...

The Heater Warms The Car When Moving, But The Fan Never Turns On Either "low-auto-high" The Fuse Has Been Replaced But Hasn't Solved The...

I Need Help Trying To Get The Air Cond Recharged Compressor Will Not Engage How Do You Reset The Crt Computer To Recharge The A/c All It Sez...

How Do I Go About Changing The Ac Compressor Pump. The Old One Was Squealing So I Bypassed It By Putting A Smaller Belt On It. I Have Since...

It Is Fwd With A 3.8 L Engine

Where Is The Relay Switch Located On A 1989 Buick Lesabre And Is It Difficult To Replace?