Cigarette lighter and OBD port does not work, fuse keeps blowing?

Tiny
M OSBORNE
  • MEMBER
  • 2011 CHEVROLET TAHOE
  • 5.3L
  • V8
  • 4WD
  • AUTOMATIC
  • 230,000 MILES
I checked the fuse and it is blown. After replacing it, it blows again.
Sunday, July 23rd, 2023 AT 5:58 PM

3 Replies

Tiny
AL514
  • MECHANIC
  • 4,793 POSTS
Hello, I believe the extra power port and the data Link connector are on the same fuse, is there anything stuck down inside the cigarette lighter power port?
Is it the LTR Fuse 53 20amp?
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Monday, July 24th, 2023 AT 1:27 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
So, check all power ports and cigarette lighters so make sure there is not a coin or other metal object down inside the sockets, also remove anything plugged into the sockets as well to see if the fuse still blows. Here are the wiring diagrams so you can see how the system works. Check out the images (below). Please let us know what you find.
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Monday, July 24th, 2023 AT 1:31 PM
Tiny
AL514
  • MECHANIC
  • 4,793 POSTS
If you want to remove it to check the connector behind that power port, remove the fuse and there are 2 small tabs to push in on, and it can be pulled out, make sure the key is off while doing this. This is the IP 1 Accessory Power outlet. But most of the time there is something stuck in it, or if you have a cigarette lighter in there, it might be worn out and shorting the circuit out.
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Monday, July 24th, 2023 AT 1:46 PM

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