Originally Posted by toddrod
Alright, the check engine light came on again so I tried maddog's method. Unfortunately, I got no readings so i turned the key to off. I dont know how I came up with the idea but I turned the key back to on (without turning the motor) and then off again. I did this three times and the odometer read p0138. Found out I have a faulty o2 sensor. Try what I did if your having problems sourcing a trouble code, it may help.
Tried your idea on my 2000 1500 and it worked.
Got a P1740 code? Any idea what that is?