While cutting vehicle off, consumer noticed a noise coming from engine compartment. Consumer unhooked wiring to ABS brakes. Consumer contacted dealer, dealer stated vehicle needed a module. Please provide any further details.
1999 GMC Sierra brakes complaints
Page 11 of 12: complaints 281 to 310 of 338, newest first, as owners wrote them.
Consumer states ABS activates when vehicle hits a bump at any speed, on dry pavement, gm tech stated this was normal.
While vehicle was parked and motor running consumer noticed electric brake module was running. Called mechanic who disconnected fuse. Module was replaced by dealer.
Anti locking braking ststem failed, pump ran all the time.*ak
When brakes applied in panic stop, pedal goes to floor. This allows inadvertant contact with accelerator most of the times I tried to duplicate this after the accident using right foot to brake. Precise placement of right foot is necessary for me to prevent this( I have to look down at my foot to get it where it won't hit the accelerator in this situation). Measurements made indicate that when the brake pedal bottoms out due to the panic stop it travels about 1/2" past the accelerator, allowing contact with it if your feet are big like mine. The brake pedal will not travel far enough to allow this to happen during normal braking. This is a followup to odi#744510. I just got my truck out of the shop yesterday and duplicated the braking problems of the accident. I measured distance that I had to stop at about 200 ft. During the accident at 40 MPH initial speed, I did not stop and hit stopped vehicle at about 10 MPH while applying full pedal pressure with right foot.
Abs system fails on panic stops. Suddenly applied pedal presseur locks brake pedal and provides little or no braking for approximately 1 second. I have been told by the dealership's service department that this is typical of all ABS and that I need to train myself not to jam the brakes in an emergency. Vehicle was in shop in dec. 1999 for transmission repair and brakes were supposed to be checked. No check was noted on repair order, but service manager assured me that the mechanic had test driven the vehicle and it was ok. This problem seems to be a result of ABS pump overreacting to suddenly applied pedal pressure and locking the pedal with back pressure before braking actually starts. I feel that the brakes should at least chirp the tires first. Currently vehicle is under repair from accident, but it will be taken to another dealership upon completion of this repair.
Rear disc brakes shiimmy very badly when braking.
Vehicle was moving and had to place foot on brakes to stop. Abs pump had malfunctioned and failed to stop vehicle right away. Had to unplug pump due to wearing out of battery. Do not have any ABS braking features.
When braking brakes feel spongy and braking distance has increased a lot.
Being as mr. & mrs. [xxx] have no computer and I am the one that discovered the fault with their vehicle, I am submitting this form for them. I am a mechanic of 25yrs experience and I am the one that questioned two of the service writers at two gm dealerships plus mrs [xxx] was told by her dealership that he had 3 more vehicles with the same problem. My name is [xxx] ([xxx]). I am the transportation supervisor at mrs. [xxx] place of employment. My business # is [xxx]. The ABS motor shorts out and continues to run untill unplugged or fuse is pulled. It gets extremely hot. It is mounted inside the left frame rail and fuel lines run just over it. The motor could catch on fire and melt fuel lines, resulting in a bad fire. In talking with 2 service writers and 2 different general motors dealerships, I have been informed of a total of 6 ABS motor failures due to shorting out and running continuously after ignition is shut off. Parts of this document have been redacted to protect personally identifiable information pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6).
Dealer and gmc denied any defect in brakes and denied damage claim and brake repair.
Abs unit started pumping and would not shut off and had to be replaced at my expense.
Abs light came on braking distance was then much longer than normal, ABS motor then would not stop even with key shut off . Service manager told me ABS electronic control modual failed this type of fail leads me to think it is a design problem ,electronics are not mileage related and due not degrade.
Consumer had 2 tire belts separated, one at 25000 and one at 1500 miles (firestone wilderness at 265-75r16 dotw273wma170). Nlm
I believe there is a problem with this module. I have talked to service managers at 3 different locations and they have all said that the problem exist on these models. They have seen it on trucks with low mileage also. One of the service manager said that he believes there should be a recall on them. I have a hard time believing if you can call any dealership and tell them the problem I'm having they will all say it is a relay inside the module that has gone bad and the module must be replaced at $1000.; therefore, there must be a problem with these modules shorting out. Also, everyday I pass up1999 and 2000 models trucks like mine and see one of the running lights out. I have personally repaced mine twice and it is out again, too me that,s a problem also. I hope to hear back from you soon.
The ABS system malfunctions when driving on gravel road or ice, but works fine on other kinds of roads. The malfunctioning of ABS causes wheels to lock up resulting in extended stopping distance. The dealer could not determine the cause however, these ABS brakes were not tested on these common driving conditions by the manufacturer.
Tried to stop when someone about 50 feet in front of me stopped. The brake pedal went straight to the floor and there were no brakes. I ended up rear-ending the person because the brakes stopped working!!! We have had problems before with the ABS almost making my husband go through stopsigns and such. We took the vehicle to the dealer and they "calibrated the ABS tire size and ran the bleed and bleed system". Obviously it didn't work because we have been in 2 accidents because the brakes quit working both times!
While making a left turn and applying brakes pedal went to floor, causing extended stopping disatnce. Please give any further details.
Ongoing problem with ABS system failure. At 2,700 miles 1st incident occurred when applying brakes. Pedal kicked back up, causing momentary loss of brake 90-100 feet before stopping. Dealer notified, and made some repairs. At 28,000 miles, problem reoccurred, and caused a vehicle accident. Notified dealer again, and informed consumer that they were unable to duplicate the problem.
The brake line (non-metal) has worn through. Owner checked brake line after hearing about it. Manufacturer refused to have vehicle repaired due to being out warranty & too many miles.
While braking on bumpy road brakes failed,pedal went to floor, vehicle went through intersection.
Brakes make noise and pull/vibrate when applied, the rotors and pads replaced however the system still experiences problems.
The rear rotors u-joint, carbon build up on throttle, replaced window motor uses 2 qts of oil every 400 to 500 miles , transmission uses 1 qt of oil every 20000 miles , air conditioner fan does not work on high I believe the throttle build up is a safety issue with the gas petal sticking. We have a lemon
Abs brake problems: when going over a bump and applying brakes, they chatter and become mushy. This extends stopping distance which may cause a crash. This mostly happens first thing in the morning. Truck has been to the dealership numerous times. Dealership stated that this was a normal condition. Front disc brakes have been replaced, but there still was a problem with the brakes. This has been an ongoing problem for over a year.
I was driving in a parking lot and applied the brakes, and the brake pedal went to the floor. I couldn't stop the vehicle and ran into some trees. This has occurred before in other gm vehicles that I have owned. I would have thought that they would have fixed them by now.
Major vibration at speeds over 60, also antilock brake failure or jumping --dealer was very receptive and still is but gm seems to be ignoring this problem.
I have experienced excessive wearing of the front brakes, which has resulted in the rotors being replaced first, then the pads replaced 2 weeks later, and upon replacing the pads the new rotors required resurfacing. Since then after driving approx 5k miles, I was told that the new pads are appox 40% worn. I required the right front balljoint to be replaced when the rotors were done. When applying the brakes & hitting a bump in the road, the brake pedal goes down to the floor and has a complete lose of braking. It failed the annual inspection, due to a leaking donnut gasket. The tailgate squeaks & rattles, and appears out of alignment. The front driver's door creaks requiring repeated greasing. There appears to be excessive wearing in the front end and braking system, as well as excessive creaking & noise from the rear area of the truck, tailgate, and driver's door. I have been met with continued resistance and lack of answers from both the mfg and dealer. Any help or information would be appreciated.
While driving over bumps braking system malfunctioned, causing brake pedal to push upward. There was no braking ability which caused a crash. Dealer was aware of the problem, but could not determine how to fix the problem. Please provide further information.
No summary listed for above vehicle.
Consumer exprienced problems with the ABS brakes. It was extremely hard to maintain control when applying brakes. Dealer acknowledged that the brake pedal seemed to go straight to the floor, and maintained that was the way the ABS system intednded to operate.
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