Cadillac Repair: 2002 Seville SLS gauges and dash, seville sls, screw ups

Question
Okay i was in Dallas (don't live there) got radio replaced and audio 2 subs and an amp. after they gave me the car back the Gas gauge and temperature gauge along with dash lights come on and the thing that tells the temperature out side and that cool information is not working. so i told them to recheck everything just to make sure they didn't miss a wire or what not. (they said they checked all the wires) well, still nothing so we tried resetting the dash. that did not work, then i check fuses there okay. so i don't know what it could be or what i have to do.

Answer
If everything that is NOT working WAS working prior to their installation of the Radio and components and now the items that DID work prior to their working on the vehicle now do NOT work I would POSITIVELY have to say that they screwed up something in the wiring of the new radio and or components.

This is VERY VERY common as I have seen and fixed MANY of these screw ups when radios are installed in place of the manufacturers radio.

What you have is a MAJOR problem which is going to take major dollars to fix.