Air pocket in cooling system is a possibility however the 3.4 liter gm v6 is also famous for the lower intake manifold gasket going out as well as head gasket issues. That engine is difficult to bleed air from as the bleed valve is not the highest point of the engine. Raise it in jack stands, bring to operating temp and Crack the bleed valve open until no air comes out then close. Repeat and make sure to keep water level uo. May take many tries to correct. If it turns out the intake gasket is gone or the heads have to be done make sure to get the upgraded gaskets used since late 2004. They are reinforced with a better material.
SOURCE: Thermostat in a 2003 chevy venture van
the bottom boult is hard but can be done need to use a 10 or 12 stubby wrench and take a pry bar and lighty pry heat shild away to get bottom bolt dont need to take it out all the way just loosen and slide down
SOURCE: Need to change thermostat in 01' Chevy Astro Van
It is located where the big hose comming out of your radiator connects to top of engine. Remove hose from engine your thermostat is undernieth
SOURCE: Thermostat in a 2003 chevy venture van
no you dont need a special tool you have to take the throttle body off it makes it sooooooo much more simple.
SOURCE: 2000 Chevy Venture shows gas gauge as always full..
if the remote works but the switches inside the van doesn't then the most likely fix would be the switch, tthough it is strange that both would quit. the place too start would be pop out the switch with a small screwdriver and disconnect the connector. the top left pin and the top middle pin is the unlock circuit in the switch. check continuity with your multimeter while pressing unlock. if no continuity, then get a small piece of wire and jump those pins in the connector,( the top right and center ) you should hear the doors unlock, then you know for a fact that the switch is bad. the unlock is used more than the lock so it is a more common failure. you can also use a continuity test on the rear wiper switch. though it is more common that the motor would stick from not being used. hope this helps if you have any more questions i am glad to help... dustang
SOURCE: need to add 13-4a freon to my 2000 venture chevy van. Where is the pressure hose located?
passengers side under the hood.....by the firewall.....
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