Note On Intermittents

Manipulate PCM connector, 56-pin engine-to-dash connector, servo connectors and affected wiring. Note display for rapid change in servo position. Check circuit No. 403 for intermittent short to power.

Fig 1: PCM Code E68 Schematic - Cruise Control Command Problem

Courtesy of GENERAL MOTORS CORP.

Fig 2: PCM Code E68 Flow Chart - Cruise Control Command Problem

Courtesy of GENERAL MOTORS CORP.