Question about 1996 Chevrolet Suburban

6 Answers

Hand held diagnostic tool

My hand held diagnostic tool will not interact with obd2 96 cavalier. I checked the fuses all good. Any ideas?

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  • 2 more comments 
  • steve ehlers Aug 12, 2008

    I just diagnosed a problem on a 96 regal with this diagnostic tool It is suppose to turn on when plugged in. I will not even interface with the 96 cavalier computer. The tool is suppose to read all codes generic and factory

  • steve ehlers Aug 12, 2008

    I have checked it for dirt how do I check to see if it is faulty?

  • steve ehlers Aug 13, 2008

    please dont answer this post unless you have a specific thing I can do. I dont have time to check the computer for stupid things I have already checked. Like I said before I know the diagnostic tool works fine on all the other cars I own. The connections all look fine free of dirt. I just wont interface with this pcm on the 96 cavalier. The car will run but runs rough at Idle.

  • steve ehlers Aug 13, 2008

    Thank you finally someone gave me what I needed to check A-1 info

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6 Answers

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  • Master
  • 373 Answers

OK...
If the scann tool is powered with the power of the Vehicle.
It's mean the connector is missing a power .
To fix this you need to check. the following
Check the " CIG" fuse 15amp. This fuse give +12 v to the cigarret lighter and OBDII diagnostic connector.
Is the Orange Wire of the OBDII connector and PIN # 16
The Ground is the PIN # 4, black wire, and PIN # 5, black/white.
Be sure of this wires are correct fix if any need,
after try to sacn again or see if there a power when you connect the Scann tool.

OK.. I hope this help to try diagnostic your vehicle,
Thank you for use fixya.

any further info, let me know.

Posted on Aug 13, 2008

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  • Chevrolet Master
  • 2,039 Answers

If our computer dont start in the cavalier and work on a buick you can not comunicate with the car computer because the computer is shot if all wire are good and clean those computer had a recall here in canada i dont know were our at but those computer corode badly there in the front passager in the fender water salt water look at the computer the cassing breake with corosion let me know pierre

Posted on Aug 13, 2008

  • pierre laplante Aug 13, 2008

    be carefull when you remove our computer there lots of wire and everything will be jam with corosion just visuale check 1st thanks pierre

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Are you getting any standard engine codes? Have you tried a different scanner on the vehicle? You can have it checked for free at any autozone. I would be happy to assist you further so please don't reject my solution.
Thanks,
Lee

Posted on Aug 12, 2008

  • Lee A.
    Lee A. Aug 13, 2008

    Have you cleaned the throttle positioning sensor. Also like i sai if you take it to your local autozone they will check it with their hand held scanner for free.
    Thanks,
    Lee


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  • Chevrolet Master
  • 19,396 Answers

Check that connector on the module you are testing is not faulty or dirty, or that the unit is completely dead.

Posted on Aug 12, 2008

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Clean the throttle body with a good carburator cleaner, you may need flushing on your valve but as per other users cleaning the throttle body did the job

Posted on Aug 12, 2008

  • marlon john madrid
    marlon john madrid Aug 12, 2008

    check if you have cracks and leaks on the to assembly, you may have to remove the whole assembly out, but if it is visible from the mounting possition, then you can check it without removing the part.






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  • 521 Answers

Some troubleshooting problems and diagnostic items built into it, which are only accessible with the dealership
scanning tools.

still
OBD 2 systems on GM vehicles use class 2 data. The signal uses both
Frequency and Amplitude to encode the data. This makes them *very*
sensitive to ANY add on electronic dodad.

In the service manual you will find a section stating that ANY add on
electronic component *may* interfere with ECM communication and cause
driveability concerns or SES lites.

If someone does insist on wiring any dodads into the system, it is
recommended that all connections into the electrical system are made
exclusively at the battery. Most add on company techs will not take
the effort to do this Most don't even know about the above.

Posted on Aug 12, 2008

  • tech expert12 Aug 12, 2008

    ok let

  • tech expert12 Aug 13, 2008

    Did the solutions from all of us experts solved your problem if not then let us know the current updates so all the fixya experts can assist you further.

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