Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

Please take a moment & say thank you by donating $5 or whatever you can to the Center for Auto Safety.


pretty bad
Typical Repair Cost:
Average Mileage:
29,784 miles
Total Complaints:
2 complaints

Most Common Solutions:

  1. GM should warrranty -- rats eat soy oil (2 reports)
2004 GMC Yukon electrical problems

electrical problem

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2004 GMC Yukon Owner Comments

problem #2

Oct 142006

Yukon XL SLT 5.3L

  • Automatic transmission
  • 34,567 miles


Yep, we had the same problem with mice eating through the wiring harness and rendering the vehicle useless until we forked out the money to fix it. There was no mention of the connection to soy based wire coatings but it makes perfect sense. This is the only vehicle I have ever had mice eat the wiring. I would hope that GM has learned from this and added cayenne pepper to the coating recipe if they intend to keep using soy based coatings.

- , Fredericksburg, VA, USA

problem #1

Jul 162005

(reported on)

Yukon Denali

  • 25,000 miles

If what I am hearing is true. GM and other car manufactures have a huge issue by using soybean lubricant(?-soy based insulation) on wiring insulation (or soybean based insulation). Rats consider the smell to be food and eat the wire insulation creating shorts. One ate up my wiring harness --disabled car -- and expensive repair. It is great to be environmental with vehicles but creating a rat delicacy under the hood is a bit ridiculous. ---- GM did not warranty -- and I understand they have knowledge and significant issues with this manufacturer created problem.

- , Little Rock, AR, USA

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