Brake Sensor problems of the 1999 GMC Sierra

This is the continuing story of the unsafe braking system on my 1999 GMC truck. On 7/15/14 as I went to stop at a red light my brake pedal began to slow the truck and then the pedal travel almost to the floor, the red warning light came on and I had to use the emergency brake to stop. I was very close to home and managed to slowly make it safely back where I discovered, for the third time, that my brake line had rusted through. I had lost a pint of fluid and later found the leaking brake line. This will be the third time I have had to change the rusty brake lines on my truck. I realize my vehicle is old, but this has been a recurring problem for at least ten years. My 1976 pontiac firebird still has it's original brake lines that show no signs of rust. My GMC brake lines are completely rusted. I have spent more than $5000 on repairing the brakes on this vehicle since purchasing it new in 1999. I have had more than five very close close calls with assorted brake failures with the rusty brake lines, faulty abs sensors and defective wheel hubs. I am glad that I am writing this complaint and not my next of kin.

1999 GMC Sierra. Consumer states that when the brakes were applied the pedal did not move causing the vehicle to hit a parked vehicle. Mechanic replaced the abs control valve. The consumer stated he took the vehicle to the dealership so the recall could be performed on Dec 28, 2006, however he experienced a failure 1 month later. The consumer was informed that the front left sensor was damaged which was probably the cause of the control valve failure.

1999 GMC Sierra pickup truck customer states that after getting car fixed due to a recall on brakes the next day the brakes stop working causing a accident* the recall was performed on Dec 28, 2006 and on January 3, 2007 when the consumer applied the brakes, the pedal was extremely hard, the consumer was unable to stop the vehicle and consequently hit a parked vehicle. The next day the consumer took the vehicle to a mechanic who said the anti-lock brake valve had burned out. The mechanic stated there was damage to the front left sensor and wanted to know if anyone had been working on the abs sensors recently. The mechanic stated that someone had pierced inside the sensor and damaged it, which was the probable cause of the control valve failure.

: the contact stated the abs activates at low speeds, below 10 mph. The vehicle was taken to an independent repair shop and the abs sensor was replaced. A year later, the contact received a recall letter for the abs, #05v379000. The vehicle was taken to the dealership and the abs was cleaned.

The contact stated while driving vehicle made a jerking motion when stopping or slowing down . Vehicle was taken to the dealership on 8-23-05. The dealership found the hub was defective. Also, the front left side wheel sensor needed to be replaced. The consumer was told his vehicle was not a part of the recall. Updated 01/04/06.

In the summer of 2002 my GMC Sierras pu truck VIN 1gtek14vxxz526539 began to experience brake chater at very low speed. It then began to continue to roll when the brakes were applied. This problem became more pronounced and more pronounced as time went on. I had numerous very close calls with this truck involving buildings, trees and other vehicles. I took it to a local repair shop and they could not find the problem over a two week period. I finally took it to bowser GMC in pleasant hills PA. They repaired the truck by replacing the front hubs and sensors. With this repair and the previous complete brake job including brakes and rotors this episode cost more than $1400. At the time the truck had 36,000 miles on it. On 7/20/05 I began to notice the brake chatter returning. Just a slight chatter coming to a stop at red lights on inclines, then on the level and finally on 7/23/05 I almost crashed into my house as I pulled into the driveway. The same problem had returned, the truck now has 47,000 miles. It appears that my $800 hub replacement was done with the same faulty hub assembly. The same problem has returned only in less time. This is not the only problem I have had with the brakes on this truck, I just recently at 46,000 miles had to have the rear rotors and pads replaced due to rusted brake parts. So over the course of 5 years I have replaced 6 brake rotors, 6 sets of pads, two hubs and two sensor assemblies. I have had numerous close calls with this truck coming within inches of crashing into buildings and other cars. At times I have had to throw the vehicle into park to stop from hitting something. I have no other means of transportation and I am disgusted that nothing has been done to rectify this problem since I first reported it in 2002. The NHTSA action number for this truck is pe05020.

While applying the brakes the pedal pulsated and the vehicle would not stop until it advanced several feet. The consumer was able to drive the vehicle to the dealer for inspection. The dealer found several codes related tot he sensors in the front dropping out.

While pulling into a parking area brakes went to the floor and I had to slam into park to stop. This also happened again, and the vehicle ran over the parking stop. Had to slam into park again after this, took vehicle to dealer, and they informed that the abs sensor was corroded or bent. The cost was over $500. 00.

Abs control unit module activated while driving ,causing abs valve to run continuously & burn up. Dealer stated that cause of failure was due to corrosion getting into module unit. Dealer replaced module,valve & bled brake system. Cost was $1090. Service manager stated that this was a recurring problem that gm knew about but no recall was issued to fix the problem at that time. According to NHTSA web site , gm has issued a recall for wheel sensors on this vehicle due to the same cause as the module failure; corrosion. The modules are located just below driver on the inside of the frame rail. How they expected to keep them from a corrosive environment ,I can't figure. It seems to me that if gm acknowledge a corrosion problem on one part of their abs system that they should do the same on the entire system. I also can't understand how they choose certain states as being in the "salt belt". We use it here in kansas too.

When vehicle was turned off heard a noise. Had it check out. Anti lock brake sensor went out.

I have a 1999 4 wheel drive GMC Sierra and I have had a lot of close calls with accidents, because the anti lock won't stop at low speeds. They replaced both front hub sensors and the problem still continues. They did it right after the warranty expired. I only have about 35k on my truck. All the rotors peeled and they just turned the rotors down. I later paid to have all new rotors and brakes on all 4 wheels replaced, but the anti lock brakes still activate and make it hard to stop at low speeds, almost causing a few accidents at times.

This is for some people that are experiencing breaking problems with 1999 (new body style) and newer GMC and chevy 1/2 ton pick-ups 2+4wd trucks. If your having problems with your abs going off at slow speeds like under 15 mph, have your service shop check your abs sensor located on your hub. If its rusted, the sensor can't tell if your wheel is moving or not and sets it off. I had this problem with mine and had to change the whole hub/wheel ass. On both sides because it's hard to pin point which side was the cause. This can get expensive unless you can do the work yourself. Good luck.

1999 GMC Sierra brakes failed at low speeds. The consumer had the abs disconnected. The consumer stated there was a defect in the rotation speed on the wheel sensors.