OBD2 scan says "replace ECU".
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OBD2 scan says "replace ECU".
Hello,
Seeing engine check light on, did OBD2 scan. it just says "replace ECU". my truck is 2011 Sierra WT 5.3L V8 (135000 mi on the odometer). Does someone know what's going on? the light goes on and off. a week ago, new spark plug/wire installtion and throttle body cleaning were done (DIY jobs). the truck runs just fine. ECU once failed and was replaced (a recall item) when the truck was brand new.
Thanks!
Seeing engine check light on, did OBD2 scan. it just says "replace ECU". my truck is 2011 Sierra WT 5.3L V8 (135000 mi on the odometer). Does someone know what's going on? the light goes on and off. a week ago, new spark plug/wire installtion and throttle body cleaning were done (DIY jobs). the truck runs just fine. ECU once failed and was replaced (a recall item) when the truck was brand new.
Thanks!
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