Easily transform your driving experience by replacing the NSBU (Neutral Safety Back Up) switch on your Allison 1000 series transmission! Say goodbye to shifting issues, incorrect gear displays on your dash, and the dreaded nostart condition. This guide covers the switch replacement for the 5speed Allison found in 20012004 Duramax and 8.1 equipped Silverado and Sierra. Get ready to upgrade with the updated tan colored switch!

Grab your replacement switch here: https://www.merchantautomotive.com/N...

and don’t forget the replacement harness connectors: https://www.merchantautomotive.com/N...!