Serpentine belt back installation, what size is the socket?

1993 CHEVROLET ASTRO
218,000 MILES • 4.3L • 6 CYL • 2WD • AUTOMATIC
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CHRISTOPHERB
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What size is the socket i need to use with my socket wrench to move the belt tensioner do i can get my serpentine belt back on?
Mar 12, 2025 at 5:46 PM
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AL514
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Hello, this is what service info is showing for the 1993 and also for a 1994. It lists using a 1/2in bar inserted into the tensioner to remove/install the Serpentine Belt.

Here is a guide to help:
https://www.2carpros.com/articles/replace-serpentine-belt
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Mar 12, 2025 at 8:29 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.