Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Mike, I am Cam. I have a couple questions regarding this.
First does it lack power at any time after it is warmed up? Does it do this after every start or just the first start of the day?
Ok, so my first thought is a faulty sensor, but which one might be hard to find. - the engine coolant sensor in the drivers side cylinder head.
-intake air temperature sensor as part of the mass air flow sensor. - possibly a bad ground under the vehicle, drivers side under the drivers door on the frame. -possibly a bad connection or even a module but I would keep this as a last option.My steps would be to watch the data on the scanner, see if one sensor is reading out of spec and change the faulty one. Check the fuel pressure to ensure its properly responding at all times. Check fuel pressure regulator. Check and possibly change the crankshaft position sensor as it can be a cause of this. If nothing else, change the engine computer, but again, this would be if all else checks out good.
That code is for the pump motor relay, which is integral to the module. Yes the ground is the same as there.
Thats one of my thoughts Mike, the other as I mentioned are skewed sensors.