hsunlockcodes.com

VIN Unlocks 2

• How do I find the root code for my H&S tuner?
• VIN unlock worked, but now receiving an error message

Overdrive Transmission Software 2

• Entering the Overdrive transmission software code
• I bought the Overdrive Software, but the tuner doesn't prompt me for a code

GMC/Chevy Duramax 3

• Why does the GMC/Chevy Duramax require an additional unlock code?
• Can the GMC/Chevy Duramax transmission be unlocked for tuning?
• Can the GMC/Chevy Duramax tune levels be shifted on the fly?