Duramax 6.6 Cylinder Locationby Blaze Johnson
The GM Duramax 6600 is an eight-cylinder diesel engine based upon the design efforts from General Motors and Isuzu Motors. Key design implementations include four valves per cylinder, direct injection and lightweight aluminum heads. The Duramax 6600 became an engine option for the "HD" line of Chevrolet and GMC branded trucks beginning in the 2001 model year. Each cylinder for the Duramax 6600 has a designated number for identification purposes. Finding a specific cylinder will help you in regard to performing certain repairs or diagnostic tasks.
Place the vehicle's transmission in the "Park" position (for automatic transmissions), and engage the parking brake. Shut off the vehicle's engine before performing repairs or checking underneath the hood.
Open the vehicle's hood, and allow the engine to cool thoroughly.
Examine the top end of the engine, and locate the fuel injector lines, positioned above each cylinder. The passenger- and driver-side cylinder heads each contain four fuel injectors. Counting from the front of the engine to the back, cylinders 1, 3, 5 and 7 reside on the passenger-side cylinder head, while the driver side contains cylinders 2, 4, 6 and 8.