GMC Workshop Service and Repair Manuals > Safari Van M V6-262 4.3L VIN Z TBI (1990) > Maintenance | Tune-up and Engine Performance Checks | Ignition Timing | Timing Marks and Indicators | System Information | Locations

Spark Plug Wire <--> [Ignition Cable] > < Number 1 Cylinder Location

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TIMING MARK 2.5L (151, 4.3L (262) FI, 5.0L (305), 5.7L (350)

Maintenance
Tune-up and Engine Performance Checks
Ignition Timing
Timing Marks and Indicators
System Information
Locations

Spark Plug Wire <--> [Ignition Cable] > < Number 1 Cylinder Location