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Posted on Sep 14, 2017
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Suspect problems with the BCM in my 2000 sonoma V6 4X4. Truck gave up wile driving, security light flashing on the dash. Tryed to by pass the Passlock II with a resistor between the orange/ black and yellow wire that comes out of the key tumbler at the colume. Matched the resistance after a test no luck, went thru the re-learn process on luck. Has the BCM failed?

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Monster80

Joe Lamb

  • 463 Answers
  • Posted on Mar 29, 2009

SOURCE: '03 GMC 2500HD 4x4 problems

Take your positive cable off battery and wait a few minutes..This resets the computer and takes it out of limp mode.Theres been a lot of problems in the dash so if you can find an auto zone and have them scan it They'll do it for free.But as far as the lights my truck does the same thing. Just flick your fingers on the buttons and they should flash..The plug in the back of buttons was loose..

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Anonymous

  • 61 Answers
  • Posted on Jul 03, 2009

SOURCE: Truck getting too much gas

Did you check sensors such as crank senors? cam sensor? knock sensor? or mass air flow? Could all be causing it to get to much fuel. Just had same problem on 1997 Chevy Lumina

emissionwiz

Marvin

  • 85242 Answers
  • Posted on Jul 27, 2009

SOURCE: I had an issue with the passlock system. The

did you have the BCM programmed to the new key? the dealer has to do that.

Anonymous

  • 102 Answers
  • Posted on Aug 06, 2009

SOURCE: passlock gmc jimmy

try this, turn key on but do not try to start, walk away for 30 mins, turn key off for 1 min, then try to start

Joseph Howard

  • 753 Answers
  • Posted on Aug 24, 2009

SOURCE: 2000 GMC SONOMA GUAGE CLUSTER HAS NO POWER -TRUCK

Very good possibilty usally you can smell around column near ignition switch and it will smell burnt.

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