gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Engine Controls - Clear DTC's After PCM/VCM/EGR Service|Page 5548 > < Engine Controls - Clear DTC's After PCM/VCM/EGR Service|Page 5546
Page 1
background image

EGR Valve: Description and Operation

Exhaust Gas Flow

EGR Valve Subassemblies

DESCRIPTION

The control module command exclusively operates the linear Exhaust Gas Recirculation (EGR) valve (1). The control module monitors the
following various engine parameters:

^

The Throttle Position (TP) sensor.

^

The Manifold Absolute Pressure (MAP).

^

The Engine Coolant Temperature (ECT) sensor.

Engine Controls - Clear DTC's After PCM/VCM/EGR Service|Page 5548 > < Engine Controls - Clear DTC's After PCM/VCM/EGR Service|Page 5546