GMC Workshop Service and Repair Manuals > Suburban 1/2 Ton 4WD V8-454 7.4L (1988) > Powertrain Management | Tune-up and Engine Performance Checks | Ignition Timing | Ignition Timing Connector | Component Information | Locations | Page 2602

Number One Cylinder > < Ignition Timing Connector|Locations

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The Spark Plug # 1 wire is the Ignition Timing Connector.

Powertrain Management
Tune-up and Engine Performance Checks
Ignition Timing / Ignition Timing Connector / Locations
Page 2602

Number One Cylinder > < Ignition Timing Connector|Locations