Banks Speed Brake Controller With Switch, 2004.5-2005 LLY

Part# 55447

$619.00 Includes Free Shipping.

WARNING: Cancer and Reproductive Harm - www.P65Warnings.Ca.Gov

Fits 2004.5 thru 2005 Chevy Silverado/GMC Sierra 2500HD/3500HD LLY Duramax Diesel

Lower Cost Electronic Braking Solution For Your 2004.5-2005 Chevy/GMC 6.6 Duramax.

  • All-electronic design with exclusive Speed Control
  • User-selectable downhill speed  is automatically maintained
  • Basic braking function is far superior to conventional exhaust brakes 
  • Cuts downhill speed up to 78%
  • Plug-&-play install; no cutting or welding 
  • NEW Control Switch Included!
  • No More Need For The Banks IQ Computer To Control.


  • 50 State Legal CARB EO# D-161-91

Customer Reviews

Based on 1 review
SO much better when pulling!!!

Incredible difference when hauling large loads and EASY install! It gave me SO much peace of mind and hauling my trailer is now comfortable. It will take over your OBDII port, you CANNOT use a splitter. If running EFI Live, you will need analog gauges/pillar style. I had to remove my Insight. But yes, it works with my EFI Live tune. Wish I had got it sooner!