Where are Gm 3.4l v6 timing marks?

In a GM 3.4L V6 engine, the timing marks are located on the crankshaft and camshaft sprockets. The crankshaft timing mark is typically on the harmonic balancer, while the camshaft timing marks are found on the camshaft gears. When aligning the timing, ensure the marks on both the crankshaft and camshaft sprockets are aligned according to the specifications outlined in the service manual. Proper alignment is crucial for the engine's timing to function correctly.