BCM

2003 GMC YUKON
200,500 MILES • 5.3L • V8 • 4WD • AUTOMATIC
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KINSEYJAMES
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  • 25 POSTS
My gauges (speedometer, tachometer, gas, oil, temperature and battery) and lights turned off. I found out it might be the body control module? Everything else works fine the radio, the heat/AC. Just wondering if it is a fuse or if it is actually the BCM? Tried switching with a Tahoe BCM, did the procedure and it almost worked so I switched it back. After driving for an hour it started working again.
Apr 11, 2017 at 10:51 PM
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HMAC300
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BCM's are VIN number specific so others will not work unless programmed to your vehicle. if it works now then okay, but if not then it has to be scanned for codes to see what is wrong with BCM or it may be a connection problem.
Apr 12, 2017 at 6:53 AM
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KINSEYJAMES
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So can I run a diagnostic test on the BCM? Or will it show up on the test? What kind of scanner would I need to use?
Apr 12, 2017 at 7:08 AM
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KINSEYJAMES
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And what kind of connection problem is it?
Apr 12, 2017 at 7:09 AM
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HMAC300
  • ✓ASE Certified Mechanic
  • 48,601 POSTS
  • ASE Certified Mechanic
the connection problem may be a bent pin or just not making a connection to BCM you need a professional scanner to scan a body module but only dealers can reprogram them.
Apr 12, 2017 at 9:39 AM
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KINSEYJAMES
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Thank you! I will get that checked soon.
Apr 12, 2017 at 9:45 AM
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