2002 Saturn VUE Gas gauge reads empty with a full tank of gas. What is problem?

SOURCE: spark plugs on 2002 Saturn vue

just completed a plug removal and install on my '02 awd v6. if you have the time and patience it's straight forward; common sense was most helpful. to gain access to the plugs, both fore and aft, you must remove, in short, everything near to, associated with, the air intake system. common tools plus a 1/4 socket, with 8 inch extension to hold a #10 star bit. these star bolts are under the rectangular plastic plate atop the intake. once you have those out, disconnect all the wiring, carefully. lift the intake out, look for plug covers, fore and aft, ignition assembly lays atop each row of three plugs. with the hands of a surgeon, remove the ignition assembly, and by golly ye shall see your reward. easy from then on.
replaced my plugs with the iridium 'honeys'; marked improvement in starting, acceleration, smoothnes, noise, and gas mileage to the value of + 3.0%. changed out the oil with mobile1 extended performance, changed transmission fluid. took a shower. time involved, 7.0 hrs. dealer be damned,,priceless!

SOURCE: The electricsal gas pedal

The pedal itself is the sensor. It is all one assembly called the accelerator pedal position sensor. If you are getting a code for this or the throttle position sensor don't assume either are at fault. There are many problems with wiring and the throttle body assembly which contains the throttle position sensor so a thorough diagnosis is needed before any parts should be put on.

SOURCE: speed,rpm,gas,odometer gauges not working

Sounds like a body control module. It is located on top of the glove box. Unfortunately, the miles are stored in this module, so you have to go to a dealer to have it programmed.

SOURCE: 1994 Saturn SL1-Gas Gauge, Odometer and Tripomoter not working

try the little computer board thingy located under where you gear shifter. It might be fried...that's what happened to me.

SOURCE: 97 Saturn SL1 leaking antifreeze, high RPMs, uses excessive gas

wow it sounds like you have a few problems going on. One, your idle speed is set too high and needs to be lowered. Two, i would replace your temperature sensor so that you can monitor your overheating. As well as try and see where the leaking is coming from (i.e. the radiator cap, on the radiator itself, or where the hoses run into the engine-could be engine temperature sensor). Three, if you have to prime your engine at first to get it to run then more than likely fuel pump is going bad.