gm sucks my truck been to the dealer 3 times for poor fm reception on my 2014 silverado crew cab 4x4 ltz and they cant not fix the issue gm engineers tell the service department radio is working fine i was ready to go after market but gm tell me if i replace the radio my warranty is void and they don't have a solution ,well Monday i going to sue gm on small claims court i will never again buy any gm product worst truck ever