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Click on image for the lowdown. 
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| | | Forums66 Topics128,013 Posts1,055,312 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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| | | | Joined: Dec 2007 Posts: 180 Wrench Fetcher | | Wrench Fetcher Joined: Dec 2007 Posts: 180 | you need the front air fuel sensors to help the computer adjust the fuel trim. Adjust fuel trim for what? to keep the engine running at the optimum air fuel ratio. | | |
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