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Old May 22, 2005 | 11:51 AM
  #1  
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Strange Happenings..

Several months ago I got codes p0135 and p0155 show the heated o2 sensors were bad. I thougt it strange they both would go bad at once..but I replaced them both anyways. The check engine light didn't go off and I still get the codes after reset.

Now, The speedometer bounces up and down, the radio only works when the vehicle is in Park or Neutral, and the OD light flashed. At times after the truck is shut off the engine shuts off, but all the accessories stay on and you have to turn it on and shut if off again. Also while driving sometimes it will start beeping, five beeps, pause, five beeps, pause for a few minutes.

I now have P0500 which is the speed sensor. I checked the forums and it sounded like an easy fix. I got a sensor, replaced it.. No change.

Any ideas?
Thanks,
 
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Old May 23, 2005 | 07:10 AM
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Old May 23, 2005 | 02:34 PM
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Sounds like the GEM is fried...or it could be shorts within the PCM...OOOOOORR it could be....SATAN!!

Welcome to FTE!

Those problems are definantly related to a faulty GEM.
 
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Old May 25, 2005 | 11:50 AM
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What is a the GEM? I have not heard that abreviation before.
 
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Old May 25, 2005 | 03:39 PM
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Generic Electronic Module
 
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Old May 26, 2005 | 02:09 PM
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you might want to check the wiring harness they lay on the fender and ware through the wires that was what was wrong with my o2 sensors
 
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