One problem related to ignition coils failure has been reported for the 2002 GMC Envoy. The most recently reported issues are listed below.
Submission from constituent re GMC executive letter reply in engine stalling/stopping while being driven on the freeway of California. The consumer stated the vehicle stalled several times. Also, the service engine soon light illuminated, due to a faulty ignition coil. The dealer also replaced the ignition switch, as the possible cause of the engine stalling. The consumer continued to experience stalling issues, as the dealer was unable to determine the cause. When the vehicle stalled, the abs and brake warning light illuminated. The dealer found the rear speed sensor connector broken and not sitting properly in the sensor. They repositioned the connector and secured it to the sensor. The consumer discovered a recall, which described the same symptoms he experienced. Recall # 04v289000.