Avalanche ltz

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Avalanche ltz

Hey everyone so I have a 01 gmc sierra 5.3 it has a extended crank when it's warmed up. It has a new fpr in it. I also put fuel gage on it and 45 psi with key on engine off. It's running 60 to 65 psi running. Shut it off and within 10 mins bleeds down. Pulled fuel rail and the 3rd injector on both sides had a drop the right side had more of one. I'm at a loss I dnt wanna just put parts in it. I'm thinking it's the check vavle in the sending unit. Anything helps.
- August 28, 2023
4l60e

Avalanche ltz posted a topic in Gen III & Gen IV V8 Engines (LS-Based)

So hey everyone looking for some help and to pick your brains. So I have a 07 avalanche ltz with the auto 4x4. Trans just went on me. With that said I have a 06 express van 1500 5.3 but its awd trans was replaced a couple years ago. Will the 4l60e opt m30 work n my 07.
- September 22, 2020
- 1 reply
Avalanche ltz

hey everyone im new hope to learn more about these ls engines
- September 22, 2020