I bought a 03 DTS from a dealer and drove it straight tothe tinting shop. After the tint was put on the GPSgotWACKY!!! It's about a block off from the correct position and it looses the connection with the sattelite at times. After reading the owners manual it states clearly don't put after market tint on the windowssince it can mess with the GPS. GREAT AFTERTHE FACT. Anyone have experience with that??????? HELP!!!! IPAIDFOR GPS AND I CAN'T EVEN USE IT!!!! (Car looks great though)