yes they can. Have them do the cab and chassis bcm flash. It cost me $50 at the dealer when i put the LEDs in the dually.
So i can do this to my truck instead of installing those large resistors when doing switchbacks for the blinkers?
2008 Silverado 3500HD LTZ LMM CCLB DRW:
Limitless Built trans, Diamondback ATV bedcover, Maghytec pans, Amp powersteps/bumper step, weathertechs, FASS liftpump, ATP EFI Live, 5" straightpipe, SDP 3" ybridge EGR delete, 3" downpipe, HIDs, Recon smoked lights all around, Beans sump, Edge CTS, DMAXstore driveshaft, MOVE DIY bumpers, 68G attatank, autometer EGT/boost gauges, banks hotside, DRP trans lines, DDP 4" intake, PPE trans cooler, mishimoto rad hoses, Rare HD tierods/pitman/idler arm/idler assembly, AirLift 5100, 6" Zone lift, Eagle Alloy 054s wrapped in 275/65/20 SST Pros, Main Event Emblems, Overkill fab grille, HSP billet manifolds/uppipes, LFS traction bars, 2015+ mirrors