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Discussion Starter #1 (Edited)
I have been fighting a problem with my 2004 Colorado with the I5 engine for over a year now and can't seem to find a solution to it. It started with getting engine codes P0013 and P0014. I changed both camshaft sensors but they came back. Took it to the mechanic that I had been using since the warranty expired. His opinion was the timing chain needed replaced at a cost of almost $3000. I couldn't afford that so I found a mechanic that would let me buy my own parts and he would install them. Parts around $500 and Labor $1000, about half of original estimate. In about 3 days time I was getting the same codes again. I replaced the Camshaft sensors again and the codes seem to be gone but now I am getting codes P0365 and P066 which according to my Haynes Manual are Camshaft Sensor readings but in a different place that are not addressed anywhere in the manual. My questions are has anybody run into this problem, and where are these P0365 and P0366 codes from? I love this truck and my oldest grandson wants It when he gets his license. Any help will be greatly appreciated.
 

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I'd replace the camshaft actuator solenoid. Also, for the camshaft position sensor, there are 2. One for intake and one for exhaust. Which one are you replacing? Both?
 

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Whenever you have more than one code set start by cleaning the grounds. They are a known problem area that most newbies don't know about. On both inner fenders there is a square plastic box mounted with a 10mm bolt. One is behind the air filter box & the other by the ABS actuator. Remove the bolt, open the box, inspect everything, clean & repair as necessary, wire brush or sand the inner fender & mounting tab, reassemble snugly. Clear all codes and maybe your problem will be gone.
 

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Discussion Starter #4
In reply to the two replies I received from original post I replaced both camshaft position sensors and the actuator solenoid and cleaned the grounds and still am getting the P0365 and P0366 codes. I am wondering if this could be a loose or broken wire or if it could be in the PCM? Any other suggestions would be greatly appreciated.
 

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Discussion Starter #5
Late update. Finally took it to an electrical specalist. It took them about 2.5 hours and found 2 wires crossed. Truck has been running beautiful since. Have been having a little problem in the last month that is addressed in another post.
 
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