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Click on image for the lowdown. 
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| | | Forums66 Topics128,162 Posts1,057,068 Members48,463 | | Most Online14,466 Apr 26th, 2026 | | AD Chevy Trucks Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Jan 2019 Posts: 2,243 Herder of Cats, Goats, and Sheep (moderator) | | Herder of Cats, Goats, and Sheep (moderator) Joined: Jan 2019 Posts: 2,243 | Ok, starting with that info I realized that I had been looking at incorrectly labelled parts. I was looking at people selling Chevy switches with white knobs as GMC, but the GMC switch is noticeably different.
To answer my original question, the temp lever on the Chevrolet pulls the cable up and the GMC pulls the cable down. They shapes are meaninfully different and they are not interchangeable.
Thank you Bill. | | |
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