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P0689 Diagnostic Trouble Code Discussion for June 2011

Engine Controls Ignition Relay Feedback Circuit Low

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Trouble Ticket Help Requests for DTC P0689
Help Request Posted
2005 GMC Envoy Denali 5.3L No Start, Stall VIN: 1GKET63M15
P0689: Engine Controls Ignition Relay Feedback Circuit Low. ... it's bean two weeks now & can't figure it out it's a very intermittenting problem.Vehicle runs great,came in w/ the engine lite on scan codes po443,po689,p1516,p1682 & p2176 clear...
June 18, 2011