Show me how to read code from 2000 grand prix

No, 2000 was before Tire Pressure Sensors came in and became a mainstream feature. They don't normally trigger the Engine Malfunction Light anyway. There is just a warning light in the dash display that shows 'TPS'. You need someone with a Code Reader. Garages will do it for free in the hope of getting the work. It only takes 2 minutes. Write down the code and come back to us.

Here's a link to where it's located. Engine Control Unit .Here's something else I ran into for you to read. Engine Control Module ECM can fail Pontiac Grand Prix Exhaust and Emissions

Transmission trouble code could make bad shift. with scanner erase trouble code and try road test if it correct the problem.
hope it helps

First off, is a check engine lite on,if so do you know the codes?It does have a cam sensor,the cam sensor malfunction gives a code reading,in general fuel probs do not give a code this is done bymanually checking fuel press ect....the module does give specific codes as well...I have seen a cam sensor give the prob. you list, BUT TEST BEFORE YOU BUY,you can get your own codes from the a.l.d.l connector,under dash...take a coated jumper wire and push one end into the g .circuit ,the other into the b terminal and watch the lite flashig in the dash,,ie, 2 flashes...pause then 4 flashes is an example....wilf

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Hi Kim,here's a link on your code P0420. P0420 OBD II Trouble Code Catalyst System Efficiency Below Threshold Bank...

The wires will be the same. The problem is that the radio you bought may have theftlock on it. ( it would be printed on the front). If so you don't have the code for it. there is a slight chance that it will work, probably 1 in a 100. If it doesn't and the display reads LOC not LOCK, then you can take it to a dealer and they can recode it for you. Costs about 50 dollars here. Indy

No. But the HUD will go higher.

That means that there is a fuel evaporation leak detected in your fuel tank. Generally this means that your fuel cap is loose- go tighten it and see if the code goes away after driving your vehicle for awhile. The problem can also be holes in the evaporation hoses...but not likely.

should be a grey wire going to the top of fuel tank connects to fuel guage / when the guage in the tank reads grounded it shows full , no ground it shows empty. if you ground that grey wire and the guage jumps to full then faulty guage if nothing maybe bad ground on the tank itself. the guages are a reostat like a tyco race car gun the more it moves the more it grounds .. good luck

Isn't that thermostat rite in the rad cap hub? maybe you should pick up a service manual at part store that will show you all and more!! good to invest in if your doing your own work!