▸ GM (ALL BRANDS) SERVICE
GM (all brands)
diagnostic & programming.
Spot-On services GM vehicles — Chevrolet, GMC, Cadillac, Buick — in San Antonio with GDS2 (current platforms) and Tech 2 + CANdi + TIS2000 (legacy platforms). Specialty work includes AFM/DOD disable and delete, E90 ECM unlocks, Duramax diesel programming, and legacy PCM flashing that most modern shops can't handle anymore.
▸ WHAT WE DO
GM (all brands) capabilities at Spot-On.
- GDS2Current-platform GM diagnostic and programming software.
- Tech 2 + CANdi + TIS2000Legacy GM SPS programming — still the right toolchain for older platforms.
- AFM / DOD disable & deleteActive Fuel Management and Displacement on Demand disable for shops that don't carry it.
- E90 ECM unlocksBench-level ECM service for procedures the OBD port can't handle.
- Duramax dieselLB7 through L5P coverage. ASE Master Medium/Heavy Truck + L2 Diesel certified.
- CASE relearnCrankshaft Angle Sensor Error relearn after PCM replacement or related repair.
▸ FOR VEHICLE OWNERS
In-shop, by appointment
Drop-off at 4715 N Stahl Park, Suite 105, San Antonio. We do not dispatch mobile service to retail customers.
Book an appointment →▸ FOR TRADE PARTNERS
Mobile, remote, or mail-in
Mobile dispatch across the San Antonio metro. J2534 remote programming + mail-in bench service nationwide.
See trade services →▸ READY TO BOOK
GM (all brands) service starts here.
Call with the year, model, and what the vehicle is doing. Most diagnoses same-day.