When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
The original GM part number for that thermal switch is 6490448. Note that all this switch does is prevent the fan from blowing until the heater core is warm so you don't get cold air from the heater.
It also is listed as interchangeable with 25036591 that was used in later Toros to do the same thing. Even the newest ones went obsolete almost 25 years ago. Which is the story of most parts of that era.
May 5th, 2024, 02:30 AM
