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Click on image for the lowdown. 
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| | | Forums66 Topics128,140 Posts1,056,466 Members48,441 | | 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!
| | THANKS!
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: Feb 2008 Posts: 14 Wrench Fetcher | | Wrench Fetcher Joined: Feb 2008 Posts: 14 | That is a "Trico" vacuum pump.
It assists the vacuum wiper motor with extra vacuum power. | | |
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