Service Brakes Problems of GMC Sierra - part 2

At low idle the braking become very stiff and extreme pressure on the brake peddle is need to stop the vehicle. Hank graff of durand mi indicated it is due to a failed brake assist vacuum pump. The service rep. Also experienced the issue when they pulled the vehicle into the repair bay. As the owner, I have experienced this braking issue multiple times.

See all problems of the 2015 GMC Sierra 🔎.

If the brakes are pumped 2-3 times the peddle will become really firm and hard to press. When this occurs the truck will not stop. You have to stand on the brake pedal with both feet to get the truck to stop. Pretty unnerving for a 75k mike truck still under drivetrain warranty but not covered. I use this truck for work and hauling my kids. I don't like having my kids in this vehicle!.

See all problems of the 2014 GMC Sierra 🔎.

At 44,972 miles I began to experience loss of braking at slow speeds (10-15 mph) on multiple occasions. The brake pedal lost its spongy feel and felt hard and dead. No matter how much pressure I applied to the brake pedal, my truck continued to roll forward. It was a scary feeling to lose control of the vehicle especially because I had my 10 year old daughter in my truck the first time it happened. I had to depress my emergency brake to bring the vehicle to a stop. I pulled the truck over and turned off and on the ignition and the brake pedal regained its spongy, normal pressure and feel. The brakes felt normal for about a week or so and I felt maybe it was an isolated incident until the same problem occurred when I was driving home from work in city stop and go traffic. I was driving about 5-10 mph trying to come to a stop behind the car in front of me when the truck continued to roll forward. I barely had enough time to depress the emergency brake to stop and came very close to hitting the car in front of me. It would have been at very low speed, but nonetheless a collision. I took the truck to the dealer to have the problem checked out and ended up having to replace the vacuum pump assembly for $656. 50, parts and labor. I definitely feel this is a valid safety issue that deserves investigating and doing either a safety notice to vehicle owners that could be effected or a recall. Had I known about the potential issue I would have been better able to deal with it. It really shook me up the first time it happened. I didn't feel safe driving the truck even 10 feet afterwards.

See all problems of the 2016 GMC Sierra 🔎.

Hard brake pedal with increased effort needed to depress the brake pedal. Feels like truck will not stop. Had to have truck towed. Reported back on 11-24-18 to NHTSA: ( #1115347). Brake vacuum pump was replaced @ gm dealer on 11-14-18, same situation happened again on 02-19-19. Gm TSB # pit5361d needs to be a recall.

I was on a major highway traveling when the traffice became stop and go. As I was traveling in heavy traffic for about 5 minutes, my brake became stiff and would not allow me to stop as normal. I was able to stop just short of rear-ending the vehicle in front of me, however it was merely by inches. Considerations : I was on a slight decline and my vehicle has start assist where the brake pedal remains stiff when in effect, it felt like this activated. I continued to increase pressure through which I thought I heard the abs activate and the vehicle stopped.

Vacuum pump failure was noticed when parallel parking. After hitting brake several times they stopped working. Took excessive amount of force to stop vehicle.

Poor brake performance. The brake pedal gets stiff at a low speed and causes the truck to not brake completely.

Failure of the belt driven vacuum pump while driving causing very hard braking and almost caused an accident. Vacuum pressure dropped off and caused the pedal to become firm. Luckily after it was inspected for repair there wasn't oil contamination in the vacuum line or brake booster so those did not have to be replaced.

On several occasions I have had difficulty with the braking system. The braking system becomes unresponsive after pumping the brakes a few times. On several occasions I've had the brake peddle pushed to the floor in an attempt to stop the vehicle. This seems to happen mostly at slow speeds, a good example is when you are in a traffic jam and are primarily using the brakes to edge forward and stop.

Brake vacuum pump booster. First started when driving under 5 mph. The brakes were hard to push down and would not stop the truck properly. Did this for approximately 3 months. Then driving getting off the interstate and applied brakes going 60 mph the brakes would not work. Could barley stop. Same issue has when driving slow. Now the brakes will not work at any speed. They truck is undrivable until it gets fixed.

Power brake vacuum pump issue. Lost brakes while driving in stop and go city traffic. Had to have truck towed, was unsafe to drive due to no brakes.

Tl- the contact owns a 20156 GMC Sierra denali 1500. The contact stated that while driving at low speeds, the brake pedal was depresses but the vehicle failed to come to a complete stop. The contact mentioned that extra force was needed to depress the brakes to bring the vehicle to a complete stop. The vehicle was taken to tustin Buick GMC 1 auto center dr, tustin, CA 9278 (714) 460-9877 where it was repaired under the NHTSA campaign number: 19v645000 (service brakes, hydraulic) but the remedy failed to repair the vehicle. The contact mentioned that the failure still occurred. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 107,000. Dr.

Vehicle has hard shift at 5-6 mph. Dealer stated could not find issue, and reflashed tcm. Approx month later, at 10k miles, truck hard shifted from red light on highway, once up to 45 mph, shutdown. Steering wheel locked up, no brakes, no control of vehicle at 45-50 mph. Dealer kept for one week, stated loose cable on starter from battery. Exactly 1k miles later (5 weeks), now at 11k miles, truck hard shifted at 5-6mph, and at 45-50 mph truck tried to shift in 4wd. All lights on dash came on as a result. Dealer has currently had the truck for two weeks and can not find issue. They supposedly consulted gm, and instead of sending an expert tech to help dealer find issue, advised dealer to replace ecm. Replacing ecm is the general answer to not sure what is wrong. This truck is a safety issue, as when it shuts off going 45-50 mph there is no control or brakes operational on the vehicle. Gm will replace the ecm, and just like right now, will not be able to replicate the problem, and expect me as the consumer to take delivery back of the vehicle. Currently all of my documentation is in the dash of this truck, at the dealership. Trying to determine how myself as the consumer can help ensure this safety issue is corrected, and not passed on.

See all problems of the 2017 GMC Sierra 🔎.

Looses brake assistance in parking lot and sometimes on the highway,check engine light comes on with various codes the most common is misfire on startup it happen in different occasions.

I almost killed a kid today parking for a baseball game. I was traveling slowly and parking when my brakes became hard to push and failed. Truck went over curb and toward kid putting on his cleats and not facing me. I was able to push as hard as I could and it stopped. I backed up and brakes worked again. I have 46,000 miles on the truck. I am now afraid to drive it, but it seems they are working again. If this is common, GMC needs to take care of this. Someone will soon be hurt seriously!.

Hard brake pedal. At low speed the brake pedal gets really hard and makes it hard to stop the truck. Pedal has to get pushed really hard to barely stop from hitting other vehicles. Ongoing issue.

Braking at short distances. Vehicle continues to move after brake is depressed.

I have been having a problem with the trailer brake controller on my k3500 truck. Recently the message "check trailer wiring" has been coming on frequently. At the same time, the braking controller shuts off power to the trailer brakes. This has resulted in a very unsafe condition, especially with a trailer that weighs over 14,000 pounds. This has been going on for 6 months now. Repeated attempts by both the GMC dealer and the trailer dealer have failed to resolve the problem. I have been told, by the dealer, that the problem started approximately with the 2014 models. The brake controller has been upgraded, and made much more sensitive to slight deviations in the trailer system, causing the controller to "shut off" so to speak. While this wouldn't be a big issue normally, when it shuts off, you lose all braking ability to the trailer resulting in an unsafe condition. There is no way to override this and activate the brakes. What seems to be happening is a very slight deviation in the resistance in the trailer brake system (by 1 ohm or less) and that causes the "shutdown" in the controller. Trailer brakes would work, if they could get power. But, the controller has shut down, so no power. Myself (and the trailer shop) have been checking the internet and finding that this is not an isolated incident. It appears to be happening with all the big three manufacturer trucks, since about 2014. People have been coming up with some rather "creative" ways around this, in some cases eliminating the original system entirely. This is just not acceptable. Again, this "new system the big three are putting in is far worse that the old, simply because it has no room for forgiveness in a trailer system that might work otherwise, but has a slight deviation in what is considered "acceptable" to the controller. At the very least, there should be a fail safe method.

Exiting off freeway ramp in indianapolis brake pedal went to the floor without notice and no brake fluid loss, nearly crashed crossing 5 lanes of cross traffic just lucky I wasn't broadsided by cross traffic. I received no notice of hazard from gm, no recall and only learned of this problem once researching on web. I am lucky to be alive.

See all problems of the 2003 GMC Sierra 🔎.

First off would be my dashboard air bag, the dashboard plastic is cracking with the concern on flying debris I brought my GMC 1500 into my local service/sales center and he told me with out a recall there is nothing he could do for me. Second I have been dealing with what seems to either the power train or brakes from day one I purchased my truck. What it does is when I come to a complete stop, release the brake, and then apply the accelerator I get a big cur plunk sound and feeling of the truck jerk. This is coming for the rear end of my truck I would assume the rear axial. I have brought this up to my local service/sales center , multiple times. He has not stopped the problem and tells me there is not much more he can do without the manufacturer posting a bulletin out.

See all problems of the 2011 GMC Sierra 🔎.

I pulled into my driveway and aproched the garage, applied brakes and all they did was vibrate and make that pulse noise. No mater how hard I pushed the pedal, the truck would not stop and I went through the garage door and also knocked over my harley that was in the garage. I cant believe the amount of common storys about this brake issue. There should be a class action lawsuit.

See all problems of the 2001 GMC Sierra 🔎.

I own a 2013 GMC Sierra 4wd crew cab that is having braking problems. I purchased the vehicle on 05/29/2013 new from bill smith Buick-GMC inc. Located in cullman, al as a new vehicle and at the time of purchase it had 7173 miles on it as stated on the odometer disclosure statement. The vehicle currently has 41585 miles on it that indicated I have driven the vehicle 36412 miles. I have had two incidents with the brakes where the vehicle failed to stop with the brakes fully applied. The first time was when the vehicle had approximately 15000 miles on it. The second time occurred this past Thursday, December 18, 2014 when I applied the brakes at 25 mph and the car just continued to roll up hill until I hit a car in front of me. There was no damage to the older Buick lasaber rear end or bumper but my front bumper was pushed in about 2 inches. If I had been on the level or was going above 25 mph I suspect there would have been substantial damage to both vehicles. What’s happening is when the brake is applied the car starts to shudder and sounds like your banging on a tin can. When that happens the truck is not stopping or slowing at all and the brake pedal is as far down as it can go. Pumping the brake will cause the brakes to recover and the vehicle will stop. This problem has not been a consistent issue. This last Thursday is the first time I couldn’t stop in 26000 miles. Back when the vehicle had 15000 miles on it the same thing occurred. While driving the vehicle to work this morning after picking it up from the GMC dealership that said there was nothing wrong it happened again. This was after making several stops on hwy 280 in birmingham, al. This time I ran the red light with no consequences but my luck will not continue.

See all problems of the 2013 GMC Sierra 🔎.

Will not go into park.

See all problems of the 2004 GMC Sierra 🔎.

My truck started to activate the brakes in the middle of the 3 lane 680 freeway, doors started to lock and unlock, navigation went dark, muiltiple different displays on dashboard, numer of lights from the air conditioner unit, came on. Acceleration or brakes would not respond, we were unable to drive off the freeway. It was a scary moment, we were lucky that no big rig was following us, or it would had runs us over, and probably killed us.

See all problems of the 2008 GMC Sierra 🔎.

The contact owns a 2001 GMC Sierra. The contact stated that while at a stop light, the brake pedal was entirely depressed and the vehicle rolled into an intersection. The contact stated that the emergency brake was applied in order to stop the vehicle. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was 227,570.

Was driving with 3 of my children to a football practice. Was on mo state hwy 70 doing approx. 60mph. An incident occurred ahead of me which resulted in an immediate slow down. Hit my brakes hard(like all other vehicles around me) and brake pedal went to floor and truck lost at least 90pct of braking power. Almost complete lack of any brakes. It was an honest miracle that me and my children along with any other people that would have been hit at that speed were not killed or badly injured. It was a split second incident and act of miraculous luck that avoided a catastrophe. I did not have time to think and just reacted out of instinct and swerved from middle of three lanes into grass shoulder(which resulted in terrifying attempt at keeping control and not flipping truck over etc. Going from 60plus mph on a tight shoulder in a high traffic major hwy in suburban st louis. A miracle we survived. When on shoulder attempting to keep control with no brakes I did think and engaged emergency brake all the way down with basically zero affect at helping slow down. This was a dangerous and traumatic experience for my children and not soon forgotten! discovered it was a metal brakeline rusted on frame mount underneath driver door that burst causing this. I have owned the truck since 2001 and purchased with 14,000 miles. Looking online for parts to replace(which are expensive, money too tight to afford the lowest quote from repair shop to replace all steel lines of $1000 to $1500)what now pay almost what truck is worth to fix? gm is obviously aware. Why not at least have moral strength enough to put out a bulletin to inform or self inspect? I am at a loss expressing myself at gm's lack of character. I will never own as will my children another gm vehicle. Why buy american? should have gone with a japanese company. Never would have come to this with Toyota or Honda. Sad!.

See all problems of the 2000 GMC Sierra 🔎.

Dealer states that the brake modular and plug are no good. The cost of the repair would be $1200. 00. The service traction control light would come on.

See all problems of the 2010 GMC Sierra 🔎.

Lost brakes at stop light . Found all break lines rusted.

The contact owns a 2007 GMC Sierra. The contact stated that after starting the vehicle, the service stability track, the service traction control, and the anti lock braking system lights illuminated. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was 26,000.

See all problems of the 2007 GMC Sierra 🔎.

The fuel injection pump cp4 had a catastrophic failure as I was driving on a heavily traveled four lane highway, us rt. 20. I lost power steering and brakes. I felt fortunate that I was not towing a 16,000 lb. Fifth wheel camper down a mountain road. I say this because it was extremely difficult to maintain control over the truck steering it and bringing it to a controlled stop. I have read about these pumps failing on numerous diesel Ford and gm trucks. I also feel if a woman or small person had this happen to them the outcome could end in loss of control resulting in injuries even deaths. The only one that knows the actual number of pumps that have failed is the manufacturers, who will not share that information willingly.

See all problems of the 2012 GMC Sierra 🔎.

Pulling into a parking spot in a parking garage going no more than 3 miles per hour, or however fast this vehicle can go while foot is resting on break, getting ready to fully break. As I pressed down on break to stop, the vehicle continued as if the anti-lock break system slipped, causing the truck to drive forward crashing through the sheetrock wall and finally stopping after hitting the glass windows. Two weeks later, after all cosmetic repairs were done, the vehicle did the same thing in another parking lot, but luckily broke before hitting the curb and light post. I did feel under my foot on the break peddle, as I pressed down to stop, a slip of some sort which at the same time caused the vehicle to push forward right before stopping. This is definitely a malfunction of some sort with the anti-lock break system.

Three weeks ago noticed low brake fluid. Filled reservor and didnt see and leaks. Yesterday I was in town shopping and when I came out of store and leaving brake peddle went to floor when I tried to stop had enough brake to stop before hitting car in front of me. Bought a quart of fluid and refilled tank and cautiously made it the 25 miles home after refilling twice. Looked under truck and saw leak above the fuel filter. The whole line under truck is terribly corroded and will need replacing. I live in hawaii and have had the truck for 5 years so no salt damage here.

On April 7, 2014, I was involved in car accident. My vehicle was traveling on the highway through a solid green light when the other the vehicle making a left turn tried to speed up to get pass. I saw the other the vehicle and press the brakes hard but the truck slid and hit the other vehicle. I was great impact and I was shocked that our air bags didn't deploy. I'm very concern that my equipment are not working properly. . . . Please assist me in matter.

I took my truck into fitzgerald auto mall, with whom I've had a great relationship, for some power steering issues. I was told that the brake system piping itself was rusting and would need to be replaced to the tune of $1600. 00. I researched this and found that this is a common issue with gm trucks and there hasn't been anything done about it. Gm has reduced the cost of the repair "kit" to $500, but who is going to install it? I have had many vehicles and lived in many states where salt is used on the road. I've never seen a vehicle that had so much damage because of it, especially a critical system like brakes. This should have been a recall years ago. I don't think the owners of these affected vehicles should have to pay to fix an engineering mistake. Gm should be liable and fix it for free. Thank you.

See all problems of the 2005 GMC Sierra 🔎.

Abs activates (noticed by pulsing brake peddle) when moving slowly to a stop on dry clean pavement. Occurs randomly when slowly coming to a stop.