SIERRA 2500 PICKUP 01-05 (6.6L). SIERRA 3500 PICKUP 01-05 (6.6L). SILVERADO 2500 PICKUP 01-05 (6.6L). SILVERADO 3500 PICKUP 01-05 (6.6L). AUTOMATIC TRANSMISSIONS WILL HAVE THE FILTER REMOVED AND IT MUST HAVE A NEW FILTER INSTALLED WITH NEW FLUID TO FUNCTION.
