Question about Chevrolet Silverado 1500HD

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I have a 2002 chevy truck with a 6.0 it shows code po342 i have replaced the cam and crank sensor also the truck is hard to start sometimes it takes 3or4 times before it will start.

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6ya6ya
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Posted on Jan 02, 2017

  • 30 Answers

SOURCE: 2002 Chevy Trailblazer Engine Codes

This is actually an easy swap out. Remove the electrical connection, remove the retaining bolt and pull out old one. I believe the sensor is located in the front passenger side of the engine on this particular model.

Posted on Aug 16, 2008

  • 1 Answer

SOURCE: 2000 chevy blazer, truck cranks

Does your battery go dead?

Posted on Dec 18, 2008

  • 11 Answers

SOURCE: have 1999 chevy cavalier and will not start no

i have a 2002 cavalier that had cam crank ignition control mod and coil packs replaced still didnt start so i started in the steering column it turned out to be the acc switch harness one zip tie around switch and harness problem solved

Posted on Jun 16, 2009

  • 71 Answers

SOURCE: 2002 Chevy Silverado, crank sensor

After installing a new crank sensor, a Tech 2 will need to be hooked up in order to complete what is called a relearn procedure on the new crank sensor. Until this is done, your truck's ECM is unable to determine when cylinder #1 is at TDC and electronic timing is unable to be performed. Need to tow to GM dealership for this proceedure.

Posted on Jun 21, 2009

  • 819 Answers

SOURCE: 1996 chevy tahoe 4wd LT 4Door 5.7L Vortec. Truck

i suggest removing the flywheel inspection cover, and rolling the engine over a little bit at a time, checking to make sure that there are no worn or broken teeth. also, make sure there is no lateral movement, which could indicate a broken flexplate. good luck.

Posted on Dec 08, 2009

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Jan 20, 2016 | 2012 Kia Sorento Base 4dr SUV 2.4L 4-cyl....

1 Answer

My 2002 infiniti q45 turned off while sitting at a traffic light. Tried to start itbut in won't start. Diagnosed it and It showed cam shaft position sensor circuit malfunction. .code P0340...I replaced...


Did you check your fuel filter? Did you have a shop install the sensors? If they are not positioned in correctly, it won't work. Have you had your fuel pump checked as well? That's in your fuel tank. With this high end car, there may be a reset code as well.

Feb 21, 2015 | 2002 Infiniti Q45

1 Answer

Will a cam shaft senor keep my car from cranking when u cut it off I've changed both crank senor on it an it still want crank with out puting some quick start spray n it its a 2002 Buick century


when you say crank ,,, that means engine does not turn over when you turn the key to start position ,,,, as you said you use start spray this means engine is turning over ,,,,, i think you mean engine turns over but wont start,,,,,,, cam sensor will cause engine to be slower to start but you would be better to get the car plugged in to see what the fault codes are in the system ,,, also if no codes the data list of the engine sensors will show up a faulty sensor ,,, to be honest there is no point in spending your hard earned cash putting in sensors until you carry out a diagnostic check and only have to change the faulty sensor that shows up...best of luck

Dec 06, 2013 | Cars & Trucks

1 Answer

1989 lesabre stumbles and dies


I agree it sounds like the magnet for the cam sensor, or a problem in the wiring harness.
I don't think the engine will run with the cam sensor disconnected since it needs that signal to set base timing. It can run without the crank sensor once the engine starts.
There is a slight chance the timing chain is getting loose and affecting cam timing too. You may be loosing plastic teeth on the cam gear.

Apr 08, 2013 | Buick LeSabre Cars & Trucks

1 Answer

Throwed a code po335 crank sensor , i changed the crank sensor cleared the codes and 30 miles later check engine light came back on


Are you sure it was the crank sensor that you replaced? The cam and crank sensors look identical. Was the engine hard or slow to start? If so, this will sometimes set this code.

Nov 09, 2009 | 2006 Nissan Altima

1 Answer

Vehicle Stalls


you should have engine light on and engine codes
if its the cam or crank sensors, shouldn't be the starter i would start with the ingition switch.

May 28, 2009 | 1999 Dodge Intrepid

1 Answer

No start


It sounds like the cams are out of sync. There are very specific directions for re-timing the cams and CVVT unit. You will have to take it to a Volvo specialty shop or to the dealer. You might try V70R.COM or BRICKBOARD.COM. Someone there might have the specific instructions, but they are very involved and require special tools to hold the camshafts in place while torquing the CVVT unit.

hope this helps.

Feb 26, 2009 | 2002 Volvo S80

1 Answer

Have 1999 chevy cavalier and will not start no spark new ing modular crank sensor cam sensor and still will not start


i have a 2002 cavalier that had cam crank ignition control mod and coil packs replaced still didnt start so i started in the steering column it turned out to be the acc switch harness one zip tie around switch and harness problem solved

Feb 20, 2009 | 1999 Chevrolet Cavalier

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