Replacing Crank Sensor question
Thread Starter
Melting Slicks
Joined: May 2000
Posts: 2,305
Likes: 5
From: Orlando,Fl,USA
Replacing Crank Sensor question
I had posted this in general section
2000 C5 had starter go bad & I am replacing. I'm thinking of replacing Crank Sensor while down there. Is anything needed as far as a relearn for sensor replacement or is it just remove the wire, 1 bolt, pull out old , insert new & that's it? I was getting a intermittent code P 1637 both H & than H C when running. I found really loose connection at starter that crumbled in my hand when checking it. Plastic that held batt bolt cable to solenoid probably got heat destroyed from LT headers after 11 years.
2000 C5 had starter go bad & I am replacing. I'm thinking of replacing Crank Sensor while down there. Is anything needed as far as a relearn for sensor replacement or is it just remove the wire, 1 bolt, pull out old , insert new & that's it? I was getting a intermittent code P 1637 both H & than H C when running. I found really loose connection at starter that crumbled in my hand when checking it. Plastic that held batt bolt cable to solenoid probably got heat destroyed from LT headers after 11 years.
Melting Slicks
Joined: Apr 2009
Posts: 2,479
Likes: 36
Normally you should be ok with just replacing the crank sensor without needing a relearn. Just make sure you replace it with an OEM GM part. Worse case scenario, you will need a crank position sensor relearn due to an error message. It is a quick and easy procedure to perform but a Tech2 is needed.
Personally, I think you should perform a crank relearn no matter what. The relearn procedure will ensure that you don't get false misfires down the road.
Personally, I think you should perform a crank relearn no matter what. The relearn procedure will ensure that you don't get false misfires down the road.
Le Mans Master
Joined: Mar 2011
Posts: 6,835
Likes: 302
From: Columbia SC
I agree, it is the most important of the 3 relearn procedures. the other 2 being Idle Relearn (no Tech 2 required) and Key Fob retraining. It is funny that the Key FOBs are included because you disconnect the battery. I have not seen that in other related activities.
