GM OBD2 Scanner with Transmission, ABS and SRS Codes

The OBDMATE OM507 is a handheld scan tool built around GM vehicles: Chevrolet, GMC, Buick and Cadillac from 1996 through 2020. A generic code reader only sees the powertrain P-codes the engine computer reports. This one goes into the individual GM modules, so you can pull stored and pending codes out of the transmission control module, ABS, SRS airbag, body and chassis systems, not just the engine.

For transmission work that matters. A 4L60E, 4L80E, 6L80 or 8L90 that is flaring or slipping will often set a code in the TCM that a basic reader never shows. Plug into the 16-pin DLC under the dash, pick the GM menu, let it read the VIN, and scan all systems. Live data can be graphed, which is how you catch a line pressure or input speed sensor signal dropping out while the truck is moving. After a solenoid, valve body or TCM job, the transmission self-learn function runs the adaptive relearn instead of leaving the unit to shift hard while it relearns on its own.

It also covers the standard OBD2 modes on any 1996-and-newer vehicle: read and clear codes, freeze frame, I/M readiness, O2 sensor test, Mode 6 on-board monitoring and EVAP test. The reset menu includes oil life, electronic parking brake, battery registration, throttle position relearn, ABS bleeding, steering angle, TPMS, injector coding, EGR and DPF regeneration, though which ones work depends on the year and model. It runs off the vehicle's DLC power with no batteries and no subscription.