GMC Sierra 1500 owners have reported 1 problem related to engine engine control module (ecu/ecm) software (under the engine and engine cooling category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of GMC Sierra 1500 based on all problems reported for the Sierra 1500.
The contact owns 2014 GMC Sierra 1500. The contact software modification done at a transmission shop, affected the active fuel management not allowing diagnostic. The manufacturer was not notified of the failure. The approximate failure mileage was 210,000.
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