Always include your vehicle info in every post please.

I would guess it's the temperature sensor since it's next to the thermostat.

All engine sensors are listed in the service manual that was provided to you before. (charm.li)

Biggbass1014 wrote: ↑Thu May 02, 2024 5:27 amThat what it shows.

Like I said, I moved it for you. It was in the Astro section.

of course, or the engine will run too lean.

Again , electrical schematics are in the service info link I gave you. Maybe you bought a pump assembly without the level sensor? If yes you'll have to take it off the old one.

yellow is usually the mode door.

you can use the service info link I posted to find the vacuum diagram

measure the fuel pressure

You can find further service information here:
https://charm.li/Chevy%20Truck/1995/G%2 ... Diagnosis/

$5 or $20 doesn't matter if you have to change it every 30 years

Relay.
It's a $5 part so change it first.

@BHBVan
- Rockauto.com
- Junkyard
- Buy universal intake duct

Welcome to the forum.
Put a pressure gauge on the fuel rail and measure key-on pressure and leakdown.

Also, please post your questions in the Express/Savana section. Not Astro/Safari. Thanks.
(Your topic has been moved)

Please post your questions in the "G Vans" section. This doesn't belong in Astro/Safari. Thanks.
(topic moved)

Welcome to the forum.
Chop off a half inch piece of the your vacuum line and take it to the store with you

I think it might be easier from below