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Click on image for the lowdown. 
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| | | Forums66 Topics128,012 Posts1,055,320 Members48,419 | | 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 2003 Posts: 687 Shop Shark | | Shop Shark Joined: Jan 2003 Posts: 687 | Meredith: Your correct about right above oil filter (oil sender) my 88 GMC is there. Didn't know about 3rd one. Anyway pretty sure that is 1/4 Nat. Pipe Thread. If there is holes yes plug them. popcorn The Truth is Out There. (The one next to dipstick isn't a heat sensor alternate is it) | | |
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