1999 GMC Yukon Q&A

1999 GMC Yukon Question: gas hand

when im driving my gas hand say my truck is on full but when i hit the brakes it goes down wat should i do? -
Answer 1
I see a fuel level sensor kit available from AC Delco but there are three different options probably should have a tech diagnose this. -
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I've changed my fuel pump n my 96' GMC YUKON and when I brake my gas hand goes down and when I accelerate the gas hand goes up. No matter up or down hill. Why is that?