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Home >> GMC >> 1997 >> Forward Control 7.4 J >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Cruise Control System - Diesel (P Series)) >> Description & Operation >> Powertrain Control Module

Powertrain Control Module

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Powertrain Control Module (PCM) is mounted behind right side of instrument panel. Fuel control portion of PCM maintains desired speed in response to cruise control switch commands. PCM performs system diagnostics and stores diagnostic trouble codes.

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