GM 3.6 High Feature V6 (LY7, LLT, LFX) Firing Order
Firing order: 1-2-3-4-5-6 (123456).
Cylinder numbering: RIGHT bank 1-3-5, LEFT bank 2-4-6
Firing order diagram
firing order 1-2-3-4-5-6. The small number by each cylinder is its place in the firing order. Left and right banks as the maker's manual names them; where the engine sits front to back, left is the driver's side.
Details
Engines
GM High Feature V6 3.6: LY7, LLT read; LE0 spec table read; LFX same family, not read; LGX NOT covered