'02 chevy s10 crew cab
 

I have a 2002 s10 crew cab 4wd. Its been running pretty good but it seems the fuel gauge is getting fishy. Ive run out of gas once but when you looked at hte gauge it was almost below half a tank. So I have to go by how many miles i have driven then fill up by that. Would this be the fuel pump? or another issue along the fuel assembly?

Another issue thats comming up quite recently is this; The CEL came on id say twoards the end of last week so i took it to the shop and hooked the computer up to it and it came back as ECT Thermostat below regulating temperature (sorry dont remember the code). Its been going on and off every other day or so. What would be up with that?

Thanks