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Closed Loop Operation
Posted to Technical Discussion Forum on 10/16/2024 20 Replies

Hi, I have been trying for the life of me to diagnosis this engine issue. When coming to a stop at a red light, the ecm cycles from closed loop after about 30 seconds at the light to open loop. It will cycle back to closed loop after another 30 seconds. No cod... Login to read more.

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car Vehicle Data

2012 Chevrolet Silverado 1500 LT 5.3L

Engine5.3 L
Trans6-speed Automatic (Electronic)

car Vehicle Data

2012 Chevrolet Silverado 1500 LT 5.3L

Engine5.3 L
Trans6-speed Automatic (Electronic)