just swapped an LDK into my 08 ss. got everything back into place and go to start and nothing. it turns and turns and turns but won't start. fuel rail has pressure but no spark from the spark plugs. we checked and rechecked all connections and grounds and couldn't find anything out of place. currently throwing a p0335 code. any and all information is greatly appreciated.

 

Crank position sensor. Check the connections and if needed replace the sensor.

 

took the crank position sensor off the lnf we removed (cuz we knew it worked) and checked the connections to it. everything seemed to check out there really.

 

In my HP tuners for P0335 it says crank postion sensor circuit performance which points to the wiring or the plug itself. P0336 is the DTC that says crank position sensor performance which should be the sensor itself.

 

okay we'll check the wiring again today. is there a specific fuse that's for the crank position sensor that may have blown? my buddy is friends with a gm mechanic who's also gonna head out and take a look today. thanks for the help btw!

 

Not sure if there is a fuse for the crank postion sensor circuit.

 

A friend of a friend was looking at my motor and said its likely that the high pressure fuel pump lobe likely got left in the old LNF we took out. When my friend and I did the swap we checked for fuel, but not high pressure fuel. Does this seem like a likely cause?

 

It is possible but does not explain the crank sensor circuit code.

 

Crank sensor relearn with tech 2?

 

that's what we were originally thinking, but doesn't the car have to be running to do that? idk at all i'm just relaying what I've heard.

 

got it sorted out. term2 was right it was just bad wiring that took 5 times of looking at it to find it. car's running great now.

 

Good to hear.

 

thanks! how's your LDK holding up? I think I miiight have a small vacuum leak tho. my bypass valve is stuttering a little when it opens.

 

My motor is good, just have other stuff breaking now. Vacuum leak shouldn't be too hard to find, hopefully lol.

 

Now have a p2261 for bypass valve stuck closed.