Intermitent Electrical Problems.

[Goodinblack]

I have a 2011 Yukon XL 2WD

I have had certain times the vehicle would go completely dead and have NO power whatsoever.

No PDL function, gauges, etc. I did find it strange that once, even though EVERYTHING was DEAD, the GPS when plugged into the outlet would work and power on.

This Obviously meant the Battery was good.

The dealer also checked this out a few times and as in the usual fashion, they were useless on a intermittent problem.

The last time this issue happened I had a assistant keep watch on the interior lights while I beat on stuff under the hood.

In my systematic beating and pulling, I came to the negative battery cable. Two light tugs on it woke the truck up instantly.

I ordered the Negative battery cable from Amazon and it came in a few days ago. Today I went to install it.

Tracing the cable from the BATT (-), I Came to the realization that one of the Sumbixh ground wires runs all the way to the front of the truck where the front Tow Hooks are.

Well actually up from there on the frame by the Body Mount.

What I later saw somewhat amazed me.

The GROUND WIRE was pinched in the body mount.

I had to loosen the mount to release the wire. It was squished bad.

New wire and routed properly.

 

[NathanJax]

Geez Lee, why u so mad u pinch wire on purpose?

 

[Goodinblack]

Just putting it out there

It may help someone

 

[08grey]

Nice work lee. Gonna check on mine.

 

[Goodinblack]

Nice work lee. Gonna check on mine.

 

[OHSIXX]

Great find. Take it back to your useless dealer for a little show and tell....

 

[Goodinblack]

Great find. Take it back to your useless dealer for a little show and tell....

I hate going to any dealer for anything.

I did want to post this up here to help folks on here though

 

[Snacky]

Nice work! Now lets get her cleaned up under there

 

[JackJare9455]

most dealer techs = useless post high school kids

 

[Snacky]

most dealer techs = useless post high school kids

I was pretty disappointed with both of my dealer service experiences that I've had so far with my ride.

 

[JackJare9455]

I was pretty disappointing with both of my dealer service experiences that I've had so far with my ride.

I only take my vehicles into the shop for the free oil changes for life program they have. They use the AC Delco syn blend oil... and I bring my own filter..

I liked the additive package on the AC Delco oil, so I decided to save a few bucks from doing my own Mobile 1 oil changes.

Other than that... I wont let them replace my air filter.

 

[seatown]

Hello,
I am having the same type of electrical issue many many people have with their yukon/tahoe/cadilacs, luckily I haven't experienced anything while driving.

I have a 2009 Yukon SLT, and intermittently the truck will go completely dead, and I cannot start it unluck it, etc after it has been turned off. My difference is I think I have an issue with my (+) positive terminal. If the truck is completely dead, I put the key in the ignition and turn it on --nothing-- when I wiggle my (-) nothing happens, but when I wiggle my (+) wire right near the battery, the system starts.

I can't see any major issues with my wires, and the fact wiggling it right near the battery leads me to believe the terminal might be bad. The connection seems solid though and nothing feels very loose.

The battery and alternator are good.

 

[HiHoeSilver]

Hello,
I am having the same type of electrical issue many many people have with their yukon/tahoe/cadilacs, luckily I haven't experienced anything while driving.

I have a 2009 Yukon SLT, and intermittently the truck will go completely dead, and I cannot start it unluck it, etc after it has been turned off. My difference is I think I have an issue with my (+) positive terminal. If the truck is completely dead, I put the key in the ignition and turn it on --nothing-- when I wiggle my (-) nothing happens, but when I wiggle my (+) wire right near the battery, the system starts.

I can't see any major issues with my wires, and the fact wiggling it right near the battery leads me to believe the terminal might be bad. The connection seems solid though and nothing feels very loose.

The battery and alternator are good.

Many times this turns out to be corrosion inside the cable. It it a fairly common problem with the stock cables.

 

[seatown]

Many times this turns out to be corrosion inside the cable. It it a fairly common problem with the stock cables.

Ok, I think my first step will be replacing the positive cable&terminal from the battery to the master fuse.