Two problems related to brake master cylinder have been reported for the 2006 Chevrolet Tahoe. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Chevrolet Tahoe based on all problems reported for the 2006 Tahoe.
Service stability light comes on and my Tahoe will not move. Brakes are holding, have replaced abs module, abs valves, all brakes and rotors, master cylinder and booster. And still, I'm having the same problem! vehicle has been to midway motors a cheverolet dealer and still no answer, and it's throwing the very same codes co131 rear dump valve failure! these problems arose after driving kids to school. Had to have vehicle towed away as it would not move even when placed in neutral. Total brake lock down!.
Rusted rear brake line ruptured suddenly causing a lose of brakes, after pumping the brakes the fronts stopped the vehicle. The abs module locked the rear brakes out, making the truck only have front brakes. Every steel line on the truck was so rusted that you could grab them and snap them by hand, I had to replace every line from the master cylinder to the abs module, from the abs module to the front wheels, both lines from the abs module to the rear rubber lines, as well as both steel lines on the rear axle. This is a known common problem, I've replaced 100s of these line sets over the years. You cant replace the blown line, if you try to replace the bad line (or the bad section) it builds more pressure then blows out another spot or another line. If you replace all the tears it'll blow a front line out. When one line is bad you must replace them all, this was on my wife's truck, but I've had to tell 100s of customers the same thing. On the same years of vehicles (99-06) gm vehicles I warn people who ask about buying them to check the brake lines, frams, and to inspect the body and body mounts closely.