Question about 2002 Chevrolet Tahoe

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2002 chevy tahoe ,vehicle has factory alarm with keyless entry, battery and starter were checked. and are in good working order,this vehicle does not want to crank over .the starter relay just clicks, this vehicle does not have the vats system, just a factory alarm.

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  • mendoza2301 Aug 02, 2010

    yes , when i have the door open ,but when i close the door it goes off.it started

  • mendoza2301 Aug 02, 2010

    yes but only when i open the door

  • mendoza2301 Aug 02, 2010

    does anyone know anything about my tahoe

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  • Master
  • 749 Answers

If possible try tapping on the starter with a hammer while someone is cranking it over. The electrical system test only tests for amperage draw and not dead spots. Do this after checking battery connections if connections do not correct the issue. If it cranks while tapping the starter then starter is having a issue.

Posted on Aug 02, 2010

  • 9 more comments 
  • Jonathan S
    Jonathan S Aug 02, 2010

    The security light seems to be functioning the way it is suppose to. Is the clicking coming from the relay only or is it the starter solenoid clicking?Is it a fast click or just the relay clicking? The issue is definitely electrical? Let me know whats been checked and we can work with it from that point on.

  • mendoza2301 Aug 03, 2010

    just the relay is clicking, the starter was tested at local parts store, it was in good working condition . I had this problem once before ,and i armed and disarmed the alarm and it started right up.I thought it might be the ignition key / vats system ,but this vehicle does not have the vats system.i installed a custome stereo and had problems with the factory amp.I would have to arm and disarm the alarm and then open the door just to get the amp to kick on in order to hear the radio....so thats some history on the vehicle

  • Jonathan S
    Jonathan S Aug 04, 2010

    Anyway to get a wiring diagram for the aftermarket stereo just to see what factory systems the stereo tied into? It almost as if the system is running through the body control module.Check your connections at the bcm to see if the harness is loose. I intially was thinking that it was a security issue with the key but usually that will cause the security light to flash even when the key is in and just cause a no start condition. Some of the stereos require an aftermarket interface to be installed because some of the body control functions run through the OEM stereo. This almost sounds like what you are experiencing.

  • Jonathan S
    Jonathan S Aug 04, 2010

    http://www.autotoys.com/x/product.php?pr... I am sure there are some of these available locally but at least may give you an idea of what you are looking for

  • Jonathan S
    Jonathan S Aug 04, 2010

    When searching for an interface whether or not the vehicle has onstar function will determine which interface needs to be used.

  • Jonathan S
    Jonathan S Aug 04, 2010
  • mendoza2301 Aug 04, 2010

    i reinstalled the oem factory stereo and disconnected the battery,with the key on to reset the computer, and still nothing...

  • Jonathan S
    Jonathan S Aug 05, 2010

    It s good you were able to eliminate the after market stereo.So you still just get the starter relay clicking. At this point would start using a a test light to see if power is getting to the starter from the relay.This will take two people the main battery cable should always have power with the key on the small terminal should get power when it is being cranked over. We know already for sure that power is getting to the relay from the clicking. Are there any identical relays you can swap in its place just to check the relay itself? After swapping relays if condition still exists would verify power getting to the starter.The large terminal should beconstantly powered while key is on Have someone in the car while checking for power at the small terminal you may have to continually turn the key over shut it off turn the key on etc.The small terminal is usually brief in power and not constant. Let me know.

  • mendoza2301 Aug 05, 2010

    ive already swapped relays and they are good,i used a power probe to check battery at starter and everythings good also,i tried checking the starter wire at the starter when cranking and still no crank.

  • Jonathan S
    Jonathan S Aug 05, 2010

    Tomorrow at work I am gonna check in the identifix program and see what might come up. Just out of curiosity have tried starting it in neutral? Beginning to wonder if something may be going on with the neutral safety switch. I know some of the S-10 had issues with the 7 way connector to the neutral safety switch and wiggling that harness would allow them to start, Is it a 5.3L will need that for the program to put into identifix.

  • Jonathan S
    Jonathan S Aug 05, 2010

    Have you tried jumping across the starter to see if it engages while in the vehicle?

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  • Master
  • 409 Answers

Check the battery cables, both positive and negative. Not just on the battery end, but at the starter, and the engine block. The cable could have a bad spot along its length that may or may not be visible. The best troubleshooting step is to replace them.

Posted on Aug 02, 2010

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