My 2004 gmc sierra had 3 gauges go out on my last trip yet there was no problem with the truck as far as performence was concerned

Electrical problem most likely a stuck or faulty gas gauge

Replacing a battery won't cause this unless you happen to hook it up wrong. In that case, check fuses, All of them. If they are all good, start replacing all those parts to include some computers.

If the gauge stays at 3/4 my guess would be the sending unit in the tank is stuck in place.

im not certain, but i believe that the gauges are electronic. and when you were working on the radio you may have accidentally touched the wrong wires together shorting out the console. i would check the fuse cor the console.

it sounds like a heater door actuator is not allowing the door to swing into the heat position...as for the temp gauge there is a recall for a bad insterment cluster for that truck...a circuit board is cracked in the dash not allowing the gauge to function...call a GM dealer to get more info on this recall...the heat problem can be easliy fixed at any qualified service station

if you ask a question about what your concerns are ,maybe we can help

your cluster gauge is broken or has a loose connection. if your gauges sometimes work and sometimes dont then it is a loose connection. and if they dont work at all then it is broken. i would also check fuses and electrical supply to gauges. if you dont find any errors or bad grounds then i recommend taking the cluster gauge out and replacing it.

not sure if you have noticed it but do your headlights also dim at idle?. it's likely that the alternator or battery is failing although i would lean more heavily toward the alternator. i believe autozone will test them for free though i'm not certain.

Here you go. Under hood fuse block
Ign. Fuse E
and
ipc/dic
both fuses are 10 amp
I hope this helps. Take care.