ChevroSys Scan Free (OBD2 & ELM327 for Chevrolet) - Apps on Google Play the app its free.

this is the blue tooth scanner i have, had it for years now. some have issues witht hem these days due to china knockoffs. so they get this one.

USED BAFX ELM327 Bluetooth OBD 2 CAN V1.5 Scan Tool Android - OBD Reader 661799212113 | eBay