Any OBDII reader will read the codes, yes. I got real tired of being charged the fee from the "stealer", and bought one on eBay, just a reader/eraser.
1997 Chevy K2500 E/C Auto - K & N Filter, 3" exhaust, no cat. Midas Flowmaster muffler, Kennedy ECM, Peninsular Diesel Marine upper intake manifold, 3-gauge 'B' Pillar gauge pod, Autometer Phantom gauges, Boost, EGT, and Tranny temp. Homemade air/air intercooler setup, with puller fan. Phazer Gear timing, Fluidampr harmonic balancer, 250,000 kms.
2009 25' Springdale 5th wheel trailer
1978 Z28 4sp Camaro (in middle of restoring it)
1963 Dodge 2 dr. Hdtp., Model 440 (will be a Max Wedge clone)
1979 GL1000 (Honda Goldwing)