most likely inside the tank some more of gm wonderful engineering marvels. they my have given you a wonderful deal on the truck now its time to pay the piper
The 2006 GMC Sierra 3500 SLE with the LBZ 6.6 Duramax does not have a cabin filter.
6 qts with filter change.
The 2006 GMC Sierra-1500 has 12 valves.
The 2006 GMC Sierra-1500 is a gas-powered vehicle.
The 2006 GMC Sierra-1500 has a 5-speed manual.
The 2006 GMC Sierra-1500 has overhead valves (OHV).
The 2006 GMC Sierra-1500 runs on regular unleaded.
The height of the 2006 GMC Sierra-1500 is 5 ft. 11.2 in. (71.2 in.).
The 2006 GMC Sierra-1500 has a V6 engine.
The 2006 GMC Sierra-1500 is 17 ft. 1.7 in. (205.7 in.) long.
The 2006 GMC Sierra-1500's turning circle is 40.1 ft..
On engine block