Seller notes

KIT WILL ADD FACTORY NAVIGATION TO YOUR 2018 Sierra NAVIGATION IS FREE TO USE AND NO SUBSCRIPTION IS NEEDED. INCLUDES A NEW HMI Module, PROGRAMMING (NO DEALER VISIT NEEDED, saves $100-$150 programming fee and time sitting at a dealership), AND A FACTORY GM GPS DIPLEXER INTERFACE W/CABLES ($95) THAT USES THE FACTORY SHARKFIN ANTENNA ALREADY ON YOUR ROOF (NOT A AFTERMARKET GPS ANTENNA THAT YOU NEED TO HIDE SOMEWHERE IN THE DASH AND HOPE IT WORKS)! Please include your VIN number if PROGRAMMING is n...

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