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What would cause a total electrical loss while driving?

Tiny
MR0
  • MEMBER
  • 1994 GMC SIERRA
  • 180,000 MILES
I hit the dimmer switch and it killed the motor and all lights and now it's like there is no battery at all
Monday, October 3rd, 2011 AT 6:18 PM

3 Replies

Tiny
JDL
  • 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.
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Monday, October 3rd, 2011 AT 6:56 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 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.
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Monday, October 3rd, 2011 AT 6:57 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Could be a blown fusible link or the ignition switch
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Monday, October 3rd, 2011 AT 7:06 PM

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