Jumping and bucking upon acceleration?

1995 CHEVROLET SILVERADO
135,423 MILES • 5.7L • V8 • 2WD • MANUAL
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KEVINSCOTT1985
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I have the truck listed above 1500. It starts fine, idle, fine shift into first gear, fine, when you shift into second and accelerate it wants to jump, buck, and the battery gauge goes all the way down and comes back up like I lose all power. then it’s ok till I try to take off again and I have changed all most every thing I could, and it is still doing it. I need guidance badly.
Jul 2, 2023 at 1:48 PM
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STRAILER
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It sounds like the alternator or battery may be shorting out, here are two guides to help you run some tests, rev the engine when doing this test:

https://www.2carpros.com/articles/how-to-check-a-car-alternator

and this guide can help load test the battery:

https://www.2carpros.com/articles/car-battery-load-test

Let us know what happens and please upload pictures or videos of the problem so we can see what's going on.
Jul 3, 2023 at 1:55 PM