Express 1/2 Ton Van V8-305 5.0L VIN M SFI (1998)
Timing Marks and Indicators: Locations
Timing Marks
The ignition timing is completely controlled by the Vehicle Control Module (VCM). No timing reference marks are provided.
Chevrolet Workshop Service and Repair Manuals
Spark Plug Wire <--> [Ignition Cable] >
< Crankshaft Rotation
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