Hypertech programmer Chevy vehicles

Hypertech programmer Chevy vehicles

I have this hyper tech programmer here it was originally bought as a speedometer calibration unit. I paid recently to get it upgraded to hypertechs full blown programmer. I had to have it to lower my tire size to correct speedometer from lowering truck and going smaller tires. Is still married to my Silverado but will unmarry it right in front of you so you know it’s unlocked