Trying install drive belt, but the tensioner will not move

1994 CHEVROLET SUBURBAN
230,000 MILES • 6.5L • V8 • 4WD • AUTOMATIC
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LLOYDLAR
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cannot get movement in tensioner to install drive belt, does not seem to follow the common description of a 3/8-inch socket adjustment as is the common answer.
Oct 22, 2021 at 11:00 AM
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SQM
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Hello,

There should be a square hole that you will have to use a 1/2-inch breaker bar and rotate counterclockwise to release the tension on the belt.

Let me know how it turn out.
Thank you.

https://www.2carpros.com/articles/replace-serpentine-belt
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Oct 22, 2021 at 11:24 AM