GMC Yukon owners have reported 80 problems related to vehicle speed control (under the vehicle speed control category).
This is twice that I've received the p2138 throttle body sensor code, which causes reduced engine power and has subsequent issues around stabilitrack/awd. The first time was in the middle of an intersection, we limped out of the intersection at 3 mph. Today, my wife limped home from the store. This is extremely frustrating and should have been recalled a long time ago!!.
See all problems of the 2008 GMC Yukon.
While driving on the highway and keping up with traffic, I noticed my speed was 75mph. Slowing down to the posted speed limit I was suddenly getting passed up by everyone. It wasn't untill I exited the highway and while waiting at a stoplight I noticed the speedometer was reading 10mph (while standing still). Checking GMC and Chevrolet forums online, this seems to be a common problem and a definate safety concern. The reading on the speedometer while in park now varies between 10-20 mph, and I have absolutely no idea how fast I'm actually travelling while driving. I've made an appt with the dealer to have it checked out, and I'm sure the repairs will be expensive!.
See all problems of the 2003 GMC Yukon.
Tl- the contact owns a 2011 Yukon xl. The contact was driving approximately 60 mph when the accelerate got stuck and the vehicle speed increased. The contact pressed the brakes and the brakes failed so the contact used the emergency brake which slowed the vehicle down, but the vehicle would not stop so the contact jumped out of the vehicle at approximately 35 mph which in a half mile the vehicle crashed. The vehicle was towed and the manufacturer was not contacted. The failure mileage was 70,000. Rk.
See all problems of the 2011 GMC Yukon.
Without warning, check engine light, reduced power and stability system shut down dash board engine light came on and stayed on. Had engine code scanned (p2138, p0102) still problem is not resolved. Dealer was no help just wanted to sell parts that may fix it.
See all problems of the 2007 GMC Yukon.
My brakes would engage but they will not disengaged and my brakes are buringing and smelling like burnt rubber. Breaks are also sticking. The electrical system keeps blinking on and off. Replace fuse but still not working. Not displaying the correct speed on dash board I'm going slower than the speed say.
I started my car and while I was in park the speedometer said 70mph. While I was driving it would register over 120mph. I had no idea what speed I was truly going. This is a scary feeling especially with my three children in the car. I tried turning off the car putting it in drive and back to park thinking perhaps it was stuck, but nothing works. I see this is a common problem. . . Help??.
See all problems of the 2004 GMC Yukon.
As I was driving on 95n of college park, MD, my vehicle power seem to shutdown on the highway and the "reduce power engine" message appeared in my instrumentation panel. Fortunately I was close to the emergency pull off of the left lane to get out of traffic. I turned the truck off and back on, and the message went a way. I was able to continue to with my journey. However, just recently, it has done it again, this time my speed was around 35mph. Once again, I turned it off, than on and the message went away and I had power in my accelaration again. This is very dangerous. I'm taking it back in to the mechanic to have them look at it.
I had just left the free way went onto a 2 lain road we were driving about 50 mpr then we lost engine power,all the dash lights came on ,we pulled over the car killed,didnt know what to do ,so we waited a bout 8 minets then turned the key, the car started and we went on our way,a few minets later it did the same thing, it did it 2 more times, took it to the shop was told it was a gas tank sensor ,$500. 00 stoud at the shop,and the car still has the problem,what happens if the engine reduces power while do 65 mpr down the free way, ? I think we have a big safty consern here, and gm needs to know, if they dont all ready know. . .
I was getting ready to pull out of my driveway and bring my child to preschool when I noticed there wasn't power when I stepped on the gas. Reduced engine power is what I read on my dashboard!!!! I returned to my garage because I was unable to drive him to school. I am very upset!! this looks as if it's an ongoing problem with GMC. I made an appointment to have my vehicle looked at, and I am waiting to find out more about this issue. I will be just as upset if there is a large out of pocket cost. This should be recalled, there are so many others with this same problem, I was just fortunate to be home.
See all problems of the 2010 GMC Yukon.
2007 Yukon xl - traction control came on causing a reduction in power while traveling. This is a safety concern that should be addressed by general motors. This is a very serious safety issue that needs to be looked into, before somebody gets hurt or killed. Gm needs to recall their products that are involved.
Wife driving truck to work " reduced engine power", message came on the dash, and also said traction control was disabled. Power was reduced gradually to ten miles per hour. She floored the gas, nothing. Turned it off, restarted it, nothing. Engine light and traction disabled lighted were illuminated. Also the rear mirror temperature display flickers all the time. Drl burn out almost daily. Gmcs have major electrical issues before people start dying. Imagine a car shutting down on you while on the highway. That an accident waiting to happen. The rear wiper works when it feels like working, there is also a message about fixing the ride control. For all the bail money GMC got, they should recall these mistakes they made.
I was driving approximately 65 mph uphill when my engine and traction light came on. My speed was immediately reduced to about 35 mph even though I tried to accelerate. I drove home about 8 miles at a reduced speed because I had my children in the truck and it was raining. I took the truck to a mechanic the next day and he replaced the throttle body. I picked up the truck that evening and as I was driving home the same thing happened again. I took the truck back to the mechanic, the check engine light and tc light was on again however he said that there was nothing wrong. His thought was to replace the throttle body again. Two replacements later, the problem remains.
I have heard of several accidents because of reduced engine power. It slows the vehicle down and people behind them rearended them because it is a sudden drop in speed and there is no time to slam on the brakes please get this fixed before a child is injured or killed thank you.
Driving to work and "reduce engine power" came on. Engine stalled out and would not gain speed. I was in a lot of traffic when this happen and my vehicle cause a incident because of the sudden engine reduced all speed. GMC should do some research about this problem and inform the public of all the dangers these vehicles are causing for public transportation. This is ludicrous that GMC does not have these vehicle off he streets and destroyed knowing that they are putting people lives in danger. I will ever ever buy a GMC vehicle again.
Vehicle powers down without any pattern, rhyme or reason. It will do it at 5 mph, and at 55 mph, when driven a lot, and when not. Reduced engine power light turns on, vehicle suddenly slows to 25 mph max, steering becomes hard, brakes too. Then will totally shut off immediately. I have replaced the battery, throttle body assembly and wiring harness twice. Fuses, fuel pump and filters, oil, and everything else as recommended. It put me in the ditch. It stranded me in the center of a freeway in winter. When it sits for a while, it resets, only to do it again. T/c light turns on also. I found out that I can manually reset the reduced engine power for a few moments (to get out of the center of the road) by turning the ignition switch on and off very fast. It is a extreme safety hazard! I haven't driven it in months due to absolute fear for my life. When its in reduced engine power mode, I can't get it to go above 25, and going up hills can't go above 5mph. If I am pulling a trailer, it starts to go backwards. This thing is going to kill someone! please help.
It appears in my investigating this through online searches and forums, there are 1000's of gm vehicles that have had their speedometers quit working and is quite a money maker for gm and their dealerships, since they 'have' to do it so it can be reprogrammed for mileage authenticity! with these 1000's of gm vehicles having faulty speedometers, or other faulty gauges. . . Mine is stuck on 120mph!! definitely a safety issue when u really don't have any idea how fast you are going!! I think this is something they are well aware of, and not because of normal use and wear!! my 2005 GMC Yukon denali would cost $510 + tax and have to b sent away to b repaired. . . . Please investigate this and add this to all the other problems gm is having and let's not put it to the consumer like they have and are doing! thank you!!.
See all problems of the 2005 GMC Yukon.
Roughly 30 times since March my 2007 GMC Yukon xl 5. 3 slt has had the dreaded stabilitrack off, service stabilitrack, reduced engine power problem. You can be driving along at various speeds and the error will come on and you will be completely unable to accelerate. Leaving a very dangerous situation for my family. It has happened when pulling a camper and without pulling anything either. Gm refuses to help the many families having the same problems.
The contact owns a 2007 GMC Yukon denali. The contact stated that while driving 15 mph, the esc and check engine warning light illuminated as the engine lost power. The vehicle was restarted and taken to the dealer for inspection where they advised that the throttle body and the vacuum hose needed to be replaced. The vehicle was repaired but the failure recurred at least twenty-five times. The manufacturer was notified. The failure mileage was 134,000. The VIN was unavailable.
Driving 65 mph on the highway and all of a sudden my car loses power. This is very dangerous! the dash says reduced engine power. Engine light comes on. Codes for the problem p0120, p0171, p0174, p0300, p2135. I got everything done that was suggested the codes are gone and it's still happening!! not sure what the GMC dealership is up to but they don't have a clue to what's causing it or how to fix it!.
While driving in the city, my truck was driving fine. Then the stabilitrak came on. When it came on the engine slow down, and almost came to a complete stop while driving on a major road where the speed limit is 55. I was able to pull over and turn the vehicle off. I was able to get it to start and call the GMC dealer, told them what the problem was, and they asked could I bring the vehicle in to see what the problem was. After they service the vehicle, they said that the stabilitrak needed to be replaced. I hadn't even had the vehicle for a full year. Before I left the dealer I asked could I still drive the vehicle, they said that I could. So I continue to drive the vehicle. One day while drive the vehicle, it moved forward while my foot was on the brake and shut off. I tried to immediately start it cause I was behind another car at a light. I was glad that it didn't hit another car. It would not start immediately. Maybe two minutes it started and when I put it in drive and press the gas it took off fast. While driving, the stabilitrak light comes on and the engine power is gone. If I am not able to pull over, the speed will drop below 20 mph. Sometimes the vehicle will take off, with just a little bit of gas. Help am scared that it might take off and hit someone or shutoff and hit someone. This is a dangerous problem, that I feel GMC should look into before some dies or really get hurt.
When driving the vehicle it drives fine but when it gets to speeds around 50-60 it will completely shut off I have to put it on n and turn the key all the way back and then try starting it again. After it turns off the first time then it will start turning off more randomly. I have been reading online and it seems to be a known issue with these trucks around the same year.
Driving on hwy going aprx 65mph. Vehicle said reduced engine power and started slowing down. I had to pull to side of the road. I managed not to be rear ended. This has happened often. It is a potentially life threatening situation. GMC know about this problem and how difficult it is to find the proper fix. Someone is going to die due to their lack of action. It's not safe.
The service engine light and traction control turn on and the information center on my cluster reads "engine power reduced" and "stability system disable", then my speed is reduced and only runs between ten and twenty miles per hour. I have to turn off my truck and turn it back on after a few minutes to continue, but this problem has happened on a daily basis. I think GMC is responsible for this and more similar problems.
While in the middle of driving, the "stability control diasabed" sensor comes on folloed by "reduced engine power" and my vehicle just shuts off. I have been fortunate the 4-5 times it has happened as I have been able to pull off the road, wait a couple of minutes and restart my car. I have already replaced a hub that my mechanic said was causing a "traction control" problem from earlier. I am reading online all of the nightmares and I unfortunately do not have thousands of dollars to keep trying to fix an issue that GMC is clearly aware of. I have 5 kids and frequently drive them around and someone is going to get hurt and I think GMC should take some responsibility.
A friend of mine just showed me a letter he got in the mail that is a recall to fix the reduced engine power code that shows a throttle body needs repaired. . The letter says to bring his vehicle in if it is a gm or chevy model less than 10 years old and less than 150000 miles and they will fix it for free. I contacted gm to see if my GMC was on the list and they told me to take it to a dealer and have a diagnostic done. I have already had one done and the codes keep changing, and from what I have read the gm site and other forums gm does not know what the problem and will not recall it unless they have to, my brother is also a mechanic and had it looked over by our college mechanic shop. Still no relief, I am not willing to spend $5000 and it still not fixed. . So I guess since something like it is recalled and I get into an accident because it reduces power on the interstate doing 75mpg, ill can to take legal action? I can't drive it half the time because of the problem. In the summer it starts with reduced power because its 90 degrees outside.