What would cause a total electrical loss while driving ?

1994 GMC SIERRA
180,000 MILES
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MR0
  • MEMBER
  • 1 POST
I hit the dimmer switch and it killed the motor and all lights and now it's like there is no battery at all
Oct 3, 2011 at 11:18 AM
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JDL
  • ✓Experienced Mechanic
  • 16,098 POSTS
Make sure the battery has a full charge. Check all connections. Is there any voltage at the fuse box? Check the starter circuit, bat terminal and starter S terminal for voltage, key in the crank position for the S terminal.
Oct 3, 2011 at 11:56 AM
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SATURNTECH9
  • ✓Experienced Mechanic
  • 30,869 POSTS
First thing you need to do is have the battery tested and make sure the battery cables are clean and tight.Also do you have a multimeter?Check all the fuses as well.
Oct 3, 2011 at 11:57 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Could be a blown fusible link or the ignition switch
Oct 3, 2011 at 12:06 PM
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