Possible short with rear tail light and trailer lights

Asked by Feb 01, 2014 at 09:18 PM about the 2003 Chevrolet Tahoe LT

Question type: Maintenance & Repair

2003 Tahoe....My rear passenger side tail light went out so I replaced the bulb. That
didn't solve it so I checked fuses inside the cab as well as under the hood. They were
all fine. The other night I hooked up my trailer. At first all was normal but a short time
after i noticed that when I applied the brakes the trailer lights would go out. I went to
check the plug and low and behold my non working tail light was working just fine
again. The brake light issue continued until I was almost home when I noticed the lights
on the trailer weren't going out when I applied the brake. I then checked and of course
tail light was once again gone.

My question: I'm just wondering if there is a area or specific place that a short of this
nature happens rather then having to trouble shoot wiring from front to back. Or maybe
this isn't a short but I would have to think it is. Wondering if theres any feedback out
there that may make my repair process a little easier. Thank You in advance.

3 Answers

Well....easy, the battery has two posts...the negative one is supposed to be attached to the chassis ground/fender...there where the instruments that depend on this hearty ground can be allowed to complete their circuits...well that connection has a layer of corrosion on it....mostly because 300 or more cold cranking amps will form a layer of blue spark corrosion as parts of the lug become part of the chassis and vice-versa...so what we must do is disassemble this main ground lug and wirebrush 'till shiny...the lug and the chassis so the full grounding potential to serve all electrical devices is established.....here and the connection to the motor block (near the alternator) has a hunkin 1/0 cable to it as well....to pull the demands of the starter motor...as well~

4 people found this helpful.

wirebrush to the MAIN ground....and ta....da, the world still turns round und round~

1 people found this helpful.

MAIN GROUND is the issue...you already know this now~

1 people found this helpful.

Your Answer:

Tahoe

Looking for a Used Tahoe in your area?

CarGurus has 37,993 nationwide Tahoe listings starting at $1,243.

ZIP:

Chevrolet Tahoe Experts

  • #1
    John Carson
    Reputation
    1,000
  • #2
    Tom Demyan
    Reputation
    970
  • #3
    Rowefast
    Reputation
    950
View All

Related Models For Sale

Used GMC Yukon
334 Great Deals out of 21,444 listings starting at $2,450
Used Chevrolet Suburban
324 Great Deals out of 22,531 listings starting at $1,900
Used Cadillac Escalade
206 Great Deals out of 11,999 listings starting at $2,990
Used Chevrolet Silverado 1500
1,764 Great Deals out of 153,598 listings starting at $1,000
Used Ford Expedition
395 Great Deals out of 22,358 listings starting at $1,000
Used Ford Explorer
874 Great Deals out of 67,606 listings starting at $800
Used GMC Yukon XL
223 Great Deals out of 12,681 listings starting at $1,880
Used Ford F-150
2,300 Great Deals out of 208,486 listings starting at $1,300
Used Dodge Durango
289 Great Deals out of 25,709 listings starting at $1,750
Used Toyota 4Runner
268 Great Deals out of 34,349 listings starting at $1,995
Used Jeep Grand Cherokee
874 Great Deals out of 76,615 listings starting at $900
Used GMC Sierra 1500
712 Great Deals out of 60,946 listings starting at $1,395

Used Cars For Sale

2017 Chevrolet Tahoe LT For Sale
6 Great Deals out of 698 listings starting at $31,999
2016 Chevrolet Tahoe LT For Sale
3 Great Deals out of 197 listings starting at $33,399
2015 Chevrolet Tahoe LT For Sale
26 Great Deals out of 598 listings starting at $23,995
2014 Chevrolet Tahoe LT For Sale
112 listings starting at $12,980

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.