Question about 1998 GMC Sierra

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1998 GMC Sierra radio and display stays on all the time

I have a 1998 GMC Sierra, and just recently, when I shut the truck off and remove the key, the radio and time display stay on. The only thing that works is disconnecting the battery cable so it will not drain my battery.

Any ideas what causes this?

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  • 3 more comments 
  • RounToIt Feb 20, 2009

    1998 GMC Sierra radio and display stays on all the time, have to disconnect battery to keep from running battery down.

  • RounToIt Apr 16, 2009

    Factory radio. If I pull the fuse for the radio battery, then the clock goes off and it doesn't run the battery down. Any ideas what is wrong?

  • dale mcgeeever Aug 05, 2013

    I also have a 1997 GMC Sierra 2500 truck that the clock stays on even if the key is out of the ignition and will not shut off! If you find out how to correct it please let me know?

  • John Gallaway Oct 26, 2013

    My radio is after market with a big subwoofer under the back seat. i don't know if it has RAP.

  • John Gallaway Oct 26, 2013

    my pproblem is unreliable starting

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  • 13 Answers

First of all...does your truck have the retained accessory power (RAP)? If it does, the radio would always stay on with the key off until you open the drivers door. If it does have RAP and the door pin on the drivers door has went bad, then the truck doesn't know that you opened the door and continues to allow accessory power (although it would still cut off after about 20 minutes). If the interior lights come on when you open the door, then the pin is ok. If the lights come on, it could be the RAP relay. If it has gone bad, it is possible it is stuck supplying power and needs replacing. The relay should be labeled in the fuse panel, and there should be other relays in the panel with the same part number. You can swap a relay for the RAP relay and see if it fixes the problem...if it does fix it swap the relays back and replace the RAP relay. If the truck doesn't have RAP then it is possible the problem is in the radio..if you have a friend with a GM car or truck close to the same year you could swap radios and see if that fixes your problem...should be pretty simple. pull the cover off the dash, it just clips on, take out a couple screws that hold in the radio, unplug it and plug in the other radio. sorry so long winded...hope this helps you somewhat.

Posted on Mar 13, 2009

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  • 8 Answers

Is it the factory radio or an aftermarket one?

Posted on Mar 02, 2009

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