Xcelerator Updates

Online Update Instructions and Files

Note: Hot Race LMM, Hot+2 E.T. Race LMM and 2001-2008 Hot+2 E.T. Xcelerators are not upgradable online! Updating your programmer with the TUNE and TEXT files will result in loss of race tunes. Please fill out a warranty return form

Choose your model:

2006-2007 Duramax LLY/LBZ Xcelerator

Use the above update if your Xcelerator screen looks like this.

Duramax LB7/LLY/LBZ/LMM Xcelerator

Use the above update if your Xcelerator screen looks like this.

2007-2008 C4500/C5500 Medium Duty Kodiac/TopKick

2007-2008 C4500/C5500 Medium Duty Kodiac/TopKick Tune available here!

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Common Problems with Online Update

Problem: I get a "garbage screen" after updating my Xcelerator!
Solution: You have used the incorrect update! Simply use the other update to correctly update your Xcelerator.