2004.5-2005 Silverado & Sierra 2500 & 3500 Duramax LLY Transmission Kits

Your Duramax LLY-powered Silverado or Sierra has been on the road for a while now, and your stock transmission is probably in need of a serious overhaul, especially if your truck is running around at higher power levels than stock4 or if you're towing heavy. Tier One's selection of transmission rebuild kits for 2004.5-2005 Silverado & Sierra 2500 & 3500 trucks will help you get your truck back in tip-top shape, shifting smooth, and feeling great. Each of these Duramax LLY transmission rebuild kits come with full sets of seals, clutches, gaskets, hardware, and other replacement components so that you can swap out all the wearable parts of your stock transmission all in one place. Many of these Duramax transmission rebuild kits come with aftermarket and upgraded components that will let your transmission more horsepower and torque than stock so that you can take your Duramax LLY truck to the next level. Make sure you also check out our 2004.5-2005 Duramax LLY Complete Transmissions or our 2004.5-2005 Duramax LLY Transmission Coolers!