Duramax cam sensor

[Cyounger]

I got a 2009 lmm, it through a p0340 code, so I Replaced the camshaft position sensor and the crankshaft position sensor both while I was there and had things apart. Put it all back together started the truck and it started great, ran it for about 20 minutes or so for it to warm up as I changed thermostats also, shut the truck off and now it will not start at all and it’s throwing a p0341 code now instead of the p0340. What did I do wrong or what might be going wrong??

 

[Bdsankey]

What brand sensors did you use? If they're parts store brand and not genuine GM, I would suggest getting a set from GM.

 

[Cyounger]

Standard ignition bought from O’reilly’s

 

[Cyounger]

Watching the camshaft position sensor signal being present on the scan tool, while cranking, it’s jumping from no to yes to no and back to yes. Back and forth while cranking.

 

[Bdsankey]

Buy the proper sensors and report back would be my opinion.

 

[TheBac]

Did you check to see if the crank reluctor had sheared its pin like the person on YellowBullet did?