When I turn off my 2008 Tahoe, everything pretty much goes dead, almost like the battery has been completely removed or something. I can open the hood and wiggle the negative battery cable and all the lights come on and everything is back to normal again, that is until I drive it and turn it off again. I first thought it was an issue with the battery so I replaced that today, it started up just fine, but when I turned it off, completely dead. I am at a loss and would appreciate any suggestions here. I can provide more info if needed to help find an answer to this problem. Thanks in advance!
Electrical Problem
- Thread starter dbuff87
- Start date
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Bad negative battery cable
Many threads about issues and even TSBs on replacing the negative cable. Search around here for more info cause it's been done by many members here
Many threads about issues and even TSBs on replacing the negative cable. Search around here for more info cause it's been done by many members here
Goodinblack
I Like Tacos
Look up a thread I started
GM Customer Service
Full Access Member
Hello dbuff87,
Sorry to hear about the electrical issue you've encountered with your truck. Although I'm not trained a s a technician, I'd be happy to reach out to your dealer and look into this further for you. Please feel free to send me a PM if interested. I'm happy to assist any way possible!
Sincerely,
Eddie A.
GM Customer Care
Sorry to hear about the electrical issue you've encountered with your truck. Although I'm not trained a s a technician, I'd be happy to reach out to your dealer and look into this further for you. Please feel free to send me a PM if interested. I'm happy to assist any way possible!
Sincerely,
Eddie A.
GM Customer Care
HERD546
Member
I had the same issue with my 2009 Tahoe Z66 PPV. I started looking at the battery cables. The negative battery cable if you would wiggle on it the lights would come on. So today I had some time to take a look at things. The negative battery cable has a poor connection due to a poor design, it looks like its crimped on.
So I took out the propane torch and some electrical rosin core solder and heated the terminal up and flowed solder in it and its now rock solid. The photo 305 shows the stock negative battery cable. Photo 306 shows the connection at the block. Note the corrosion. Photo 308 shows the soldered battery terminal. Make sure you use rosin core solder for electrical work for this and not plumbing solder. As plumbing solder is called acid core solder. If you can get some rosin flux to put on before you solder the connection that will make a better connection
So I took out the propane torch and some electrical rosin core solder and heated the terminal up and flowed solder in it and its now rock solid. The photo 305 shows the stock negative battery cable. Photo 306 shows the connection at the block. Note the corrosion. Photo 308 shows the soldered battery terminal. Make sure you use rosin core solder for electrical work for this and not plumbing solder. As plumbing solder is called acid core solder. If you can get some rosin flux to put on before you solder the connection that will make a better connection
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