Fits: 2007.5 thru 2010 Chevy Silverado/GMC Sierra 2500HD/3500HD LMM Duramax Diesel 

Does your truck have higher mileage and higher than normal transmission temps? It's probably time to freshen up the transmission cooler. Over time the stock torque converter and internal clutch material can plug your trans cooler and reduce its cooling capabilities. We highly recommend a new OE replacement or performance transmission cooler anytime you rebuild or upgrade your transmission. This will insure transmission efficiency and longevity.

Includes:

• OEM GM replacement Allison transmission cooler

Replaces Part#:

• GM 15821239
  

DmaxStore Notes:

• If your truck has upgrades and/or tows, we recommend upgrading to a Max-Flow Transmission Cooler
• When replacing the transmission cooler, you will lose about 1-2 quarts of transmission fluid. We recommend using Transynd Transmission Fluid