GM-4481 2018 CADILLAC SD Navigation Memory Card, GM General Motors, OEM 8436-4481 MAPS for North America

Unbelievably fast delivery. With a personal note in it,if any problems to his number. Product was as described, unreal on ease to install. Extremely happy, would buy again

I’m very happy this sd card works perfectly also JOE was very nice when he left his phone number to call in case I had any issues I really appreciate very recommend this product!!!

Super!!! Great value and all I had to do was place sad card in slot and my car did the rest. Dealer wanted to charge me almost $430.

Easy. Just put it in and the car did the rest

prompt service, excellent product, fair price.