Ok, I'm new to diesel bombers and I don't think my first post took. I'm having problems with a 04 duramax lb7 with a crank no start code p0335. No RPM signal while cranking with scan tool. checked wiring going to crank sensor. yellow/blk wire has a good ground, LT green has good 12 volts with key on, and probing the signal wire it showed about 7-8 volts while cranking. Replaced crank sensor and check the signal pick before installing new sensor. The reluctor spins when cranking. Checked signal wiring from connector to pin 12 on the c1 ecm connector had .2 ohms. Did the same test with the cam sensor and replaced it as well. Still no luck. Took off the hyper tech program and same thing. Order a reman ECM programmed VIN and did the relearn on it. Truck will still not pick up a crank signal. If the wiring tested good, has a new sensor and new ecm. What else could cause a no RPM signal? It sets the code every time I try to crank and does the whole short crank every time. please help.

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Dang.. 50+ views n nobody else ever seen thing before. This truck needs to burn.

 

I'm having the same issue. Getting good ground. Good 12v the reluctor wheel spins and even clearing the code still having the same po335 come back short cranks and a stock truck no tune. Just ordered a ecm and hopefully that fixes it. Did u ever figure out the problem?

 

hello I’m having the same problem so I was trying to see if you figured it out and maybe can give me some tips

 

Having the same problem , any updates ?