GMC Workshop Service and Repair Manuals > R 3500 P/U 2WD V8-454 7.4L (1989) > Powertrain Management | Sensors and Switches - Powertrain Management | Sensors and Switches - Computers and Control Systems | Oxygen Sensor | Component Information | Technical Service Bulletins

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Oxygen Sensor: Locations

LH Side Of Engine.

LH Rear Of Exhaust Manifold

Applicable to: R & V Series w/V8-454/7.4L TBI Engine

GMC Workshop Service and Repair Manuals