Led brake lights don't work car shakes and transmission shudders while driving 35-45mph
Transmission shuddering and hard, clunky shifting
The transmission went out, the engine is making a noise and a service center said lots of gm's vehicles are having the same problem the power steering system also stop working and i have to replace it
Tl* the contact owns a 2016 gmc yukon xl. the contact stated that the check engine warning indicator illuminated and the vehicle shuddered when shifting gears. the vehicle was taken to an independent mechanic who stated that the transmission, transmission fluid, and wiring harness needed to be replaced; however, parts number: 700, 711, 2429, 7371, and 87571 were on backorder. the contact called ted britt chevrolet (46990 harry byrd hwy, sterling, va 20164, (703) 955-3610), but the vehicle was not diagnosed or repaired. the manufacturer was contacted and stated that they would attempt to locate the parts; however, no further assistance was provided. the contact stated that the vehicle was a lemon. the failure mileage was 65,350.
Tl* the contact owns a 2016 gmc yukon xl. while driving at low or high speeds, the vehicle shook violently as if it would fall apart. also, the check engine warning indicator illuminated. the vehicle was taken to cappellino buick gmc (5411 transit rd, buffalo, ny 14221) where it was diagnosed with a torque converter shudder failure and a transmission flush was completed. the dealer advised the contact to drive for 200 miles to correct the failure; however, the failure continued. the vehicle was taken back to the dealer where another transmission flush was completed. the contact was also informed that the sheet metal on the cross-member was causing the vibration. the cross member was repaired. after the repairs, the cabin of the vehicle was uncomfortable with uneven pressure and a high velocity vibration. the same dealer and west herr chevrolet of williamsville (8040 transit rd, williamsville, ny 14221) performed several transmission flushes. the manufacturer was notified of the failure and a claim was filed. the contact was compensated for the failure; however, the failure continued. the contact stated that the vehicle was currently at the west herr dealer as the vehicle was stalling, the rpms increased, and the traction and check engine warning indicators illuminated. the vehicle was not diagnosed or repaired. the approximate failure mileage was 42,241.
I have had issues with the transmission and power of the car for over two years. i have contacted gmc and have followed everything that gmc have requested for me to do with a vehicle. i have taken the car to four different dealerships, have had everything done with it from flushing it three to four times and have had torque converter replaced the control valve body replace. recall for the brake pedal was also done. after everything the car is in worst condition at the moment.
Vehicle began hesitating during acceleration. problem occurred intermittently at first but now occurs each time the vehicle is driven. check engine light comes on occasionally. this jerking causes safety issues when trying to increase speed. many complaints are on line from other owners with same issue
Excessive vibration/buffeting drone issues (at all speeds of the vehicle) have caused severe health issues and safety hazards from driving the vehicle. within the first 8,000 miles of owning the car, the car has now been in service for 40 days as gm tries and remedy the problem, but there does not appear to be a fix. so far, diagnostic tests indicated that there was a faulty bearing in the rear differential that led to significant abnormal wear throughout the differential and the differential needed to be rebuilt. when rebuilding, they discovered that the disassembled differential had heavily scored bearings and metal shaving throughout every bearing. ring gear and pinion had irregular wear causing a drone in the vehicle. race surfaces wear ground and scarred bad.the rebuilt differential did not fix the issue and now after having four new tires and road balancing, the problems didn't diminish but were exacerbated. after rebuilding the differential again, gm has now determined that the rear axle may need to be replaced and engineers are looking into the problem further. the steering wheel shakes and the car has a terrible vibration that worsens every time gm attempts to service the vehicle. this seems to be a well-documented problem that gm has avoided fixing. we advise other consumers to be aware of the serious safety problems related to the poor manufacturing of the vehicle and inability of gm to remedy the problem.
On 11/13/15, "service 4wd system" message appeared on the screen rendering the vehicle unsafe to drive. this issue occurred less than a week after purchase (297 miles on the odometer at the time that the issue occurred). specific issue: when the transfer case was set to "auto" it automatically switched to the "4wdlo" setting, which caused the vehicle to lock-up specifically when turning or in reverse gear. i had the vehicle towed to dealer and was told that the transfer case control module software needed to be updated / reflashed and that the encoder motor / actuator needed to be replaced. the dealer contacted gm and was notified that the encoder motor / actuator was on national backorder. the dealer received and installed the part on 12/8/15 (25 days after the issue occurred). i formally submitted a complaint to gm on 11/20/15 (ref # 8-1674527570) so they are aware of the issue.
I leased a 2016 yukon denali xl on 9/15/15. it has two major problems. 1. buffeting/pressure noise - a noise as if a window is cracked, except it's not cracked. this occurs at speeds from 24mph and up and causes ears to pop and is noticeable to virtually every passenger i have had. 2. whole-truck vibration - occurs between 70-80mph in entire vehicle. wheel replacements, tire replacements, road-force balancing, driveshaft replacement, driveshaft "balancing", etc....nothing has fixed it. i have driven 13 2016 yukon, yukon xl, tahoe and suburbans. every single one has the buffeting issues. all but one has the vibration issues. gm has issued a pi stating that the roof bows may have come disconnected and they need to be reattached. the issue here is that reattaching them doesn't fix the buffeting issue. i have a date-stamped log of every dealer visit, conversation, email, etc. and am glad to share it. these issues are ridiculous to occur in any car much less a 75k flagship car that pulls in 3-7k in profit for gm/dealers per vehicle.