Categorized | GMC Service Magazines

2005 GMC Envoy Instruments – Erratic Speedometer Operation

Posted on 22 December 2013 by admin

Download Condition Some customers may comment on erratic operation of the speedometer. Others may comment that the speedometer needle shakes above 96 km/h (60 mph). Cause This condition may be caused by a loose or poor connection at Powertrain Control Module/Engine Control Module (PCM/ECM) ground G108. Correction Technicians are to inspect and repair ground G108 as necessary. Refer to callout 1 in the illustration above for the location of G108. Refer to the Testing for Intermittent Conditions and Poor Connections and the Wiring Repair procedures in SI for more information. Warranty Information (excluding Saab U.S. Models)

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