NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
73 reports58,000 miles · Jul 6, 2018
Exterior Lighting
BOTH PASSENGER AND DRIVERS SIDE BRAKE LAMPS, TURN SIGNALS AND RUNNING LAMPS SHORT OUT AND STOP WORKING. WHEN VEHICLE IS UNDER WARRANTY, LAMPS ARE REPLACED WITH NEW UNITS, THAT ARE ALSO FAULTY AND EVENTUALLY FAIL, IN ANYWHERE FROM 1 WEEK TO 1 YEAR. GM IS WELL AWARE OF THIS WIDESPREAD, NATIONWIDE PROBLEM, YET REFUSES TO ISSUE A RE…
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BOTH PASSENGER AND DRIVERS SIDE BRAKE LAMPS, TURN SIGNALS AND RUNNING LAMPS SHORT OUT AND STOP WORKING. WHEN VEHICLE IS UNDER WARRANTY, LAMPS ARE REPLACED WITH NEW UNITS, THAT ARE ALSO FAULTY AND EVENTUALLY FAIL, IN ANYWHERE FROM 1 WEEK TO 1 YEAR. GM IS WELL AWARE OF THIS WIDESPREAD, NATIONWIDE PROBLEM, YET REFUSES TO ISSUE A RECALL, AND CHARGES $1500+ THE REPLACE THE UNITS WITH NEW OEM, THAT ARE STILL FAULTY.
NHTSA ODI #11109776
Mileage unknown · Jul 5, 2018
Electrical SystemExterior Lighting
TL* THE CONTACT OWNS A 2015 GMC YUKON DENALI. THE CONTACT STATED THAT THE REAR PASSENGER SIDE TAIL LIGHT SHORTED OUT WITHOUT WARNING. THE DEALER (LIBERTY GMC, 8660 W BELL RD, PEORIA, AZ 85382, (602) 730-7652) DIAGNOSED THAT THERE WAS A SHORT IN THE CIRCUIT BOARD, WHICH IMPACTED THE REAR EXTERIOR LIGHTING AND NEEDED REPLACEMENT. …
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TL* THE CONTACT OWNS A 2015 GMC YUKON DENALI. THE CONTACT STATED THAT THE REAR PASSENGER SIDE TAIL LIGHT SHORTED OUT WITHOUT WARNING. THE DEALER (LIBERTY GMC, 8660 W BELL RD, PEORIA, AZ 85382, (602) 730-7652) DIAGNOSED THAT THERE WAS A SHORT IN THE CIRCUIT BOARD, WHICH IMPACTED THE REAR EXTERIOR LIGHTING AND NEEDED REPLACEMENT. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS NOT AVAILABLE. *TT
NHTSA ODI #11109648
56,000 miles · Jul 4, 2018
Unknown Or Other
AIR CONDITIONER FAILURE. CONDENSER FAILURE SUSPECTED. FAILURE AT 56,000 MILES.
NHTSA ODI #11109566
42,000 miles · Jun 11, 2018
Exterior Lighting
REAR BLACK LIGHTS FAIL... KNOWN ISSUE... ONLY FIX IS $750... GMC KNOWS IT IS AN ISSUE AND HASN'T DONE A RECALL... MOST CARS YOUR TAIL LIGHT GOES OUT $10 TO FIX... GMC $750
NHTSA ODI #11101106
60,000 miles · Jun 4, 2018
Exterior Lighting
DRIVER'S SIDE LED BRAKE LIGHTS INTERMITTENTLY WORKING, THEN COMPLETELY FAILED.
NHTSA ODI #11099473
76,000 miles · May 31, 2018
Electrical SystemService BrakesStructure
TL* THE CONTACT OWNS A 2015 GMC YUKON DENALI. WHILE THE VEHICLE WAS STATIONARY, WATER ENTERED THE CABIN OF THE VEHICLE THROUGH THE HIGH FREQUENCY ANTENNA SEAL. IN ADDITION, THE CONTACT STATED THAT THE COMPUTER SYSTEM HAD AN ELECTRICAL MALFUNCTION AND THE VEHICLE'S BRAKES ENGAGED WITHOUT WARNING. DIXIE BUICK GMC IN FORT MYERS, FL…
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TL* THE CONTACT OWNS A 2015 GMC YUKON DENALI. WHILE THE VEHICLE WAS STATIONARY, WATER ENTERED THE CABIN OF THE VEHICLE THROUGH THE HIGH FREQUENCY ANTENNA SEAL. IN ADDITION, THE CONTACT STATED THAT THE COMPUTER SYSTEM HAD AN ELECTRICAL MALFUNCTION AND THE VEHICLE'S BRAKES ENGAGED WITHOUT WARNING. DIXIE BUICK GMC IN FORT MYERS, FLORIDA WAS MADE AWARE OF THE FAILURE AND DIAGNOSED THAT THE HIGH FREQUENCY ANTENNA NEEDED TO BE REPLACED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 76,000. THE VIN WAS NOT AVAILABLE.
NHTSA ODI #11099074
83,081 miles · May 24, 2018
Exterior Lighting
TL* THE CONTACT OWNS A 2015 GMC YUKON DENALI. THE CONTACT STATED THAT THE BRAKE AND TAIL LIGHTS FAILED TO ILLUMINATE SPORADICALLY. THE VEHICLE WAS TAKEN TO WELD COUNTY GARAGE BUICK GMC (2699 47TH AVE, GREELEY, CO 80634, (970) 352-1313) WHERE IT WAS DIAGNOSED THAT THE BRAKE LIGHTS NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIR…
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TL* THE CONTACT OWNS A 2015 GMC YUKON DENALI. THE CONTACT STATED THAT THE BRAKE AND TAIL LIGHTS FAILED TO ILLUMINATE SPORADICALLY. THE VEHICLE WAS TAKEN TO WELD COUNTY GARAGE BUICK GMC (2699 47TH AVE, GREELEY, CO 80634, (970) 352-1313) WHERE IT WAS DIAGNOSED THAT THE BRAKE LIGHTS NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 83,081.
NHTSA ODI #11097845
Mileage unknown · May 2, 2018
Unknown Or Other
OUR 2015 YUKON DENALI HAS 38,200 MILES ON IT AND THE AIR CONDITIONING BLOWS HOT AIR. WAS TOLD MAY OR MAY NOT BE COVERED BY WARRANTY. MAY COST OVER $1,000 TO REPAIR. TOLD IT MAY WOULD BE A 6 HOUR REPAIR. CANNOT BELIEVE WE ARE HAVING THIS ISSUE LIKE SO MANY OTHER PEOPLE ON A $75,000 VEHICLE.SHOULD HAVE BEEN A RECALL ISSUED.
NHTSA ODI #11091329
42,000 miles · Apr 9, 2018
Exterior Lighting
REAR LED (BREAK LIGHT) DOES NOT WORK TURN SIGNAL, BACKUP WORKS. COST IS OVER $500 TO REPLACE THIS IS OUTRAGEOUS EXTENDED WARRANTY DOES NOT COVER LIGHT BULBS NOW I KNOW WHY THIS SHOULD BE A FACTORY DEFECT.
NHTSA ODI #11084220
Mileage unknown · Dec 14, 2017
Suspension
I HAVE SPENT OVER $2000 ON A LESS THAN 2 YEAR OLD VEHICLE BECAUSE THE SHOCKS/STRUTS DID NOT HOLD UP. I KNOW OF 4 OTHER PEOPLE WITHIN MY SMALL COMMUNITY WHO HAVE HAD THIS SAME PROBLEM ON EITHER GMC YUKON OR CHEVY TAHOE. IT FEEL CERTAIN THIS IS NO COINCIDENCE.
NHTSA ODI #11054653
NHTSA investigations
1PE18012 · Brake Vacuum Pump Failure
Opened Nov 20, 2018 · Closed Apr 10, 2022
Status: closed (inferred from source dates) · Service Brakes; Service Brakes, Hydraulic; Service Brakes, Hydraulic:power Assist:vacuum
On November 20, 2018, the Office of Defects Investigations (ODI) opened PE18-012 to investigate instances of sudden onset of a hard brake pedal that could result in extended stopping distance due to an issue with the brake assist vacuum pump in model year (MY) 2014 through 2016 GMC Sierra 1500 and Chevrolet Silverado 1500 series pickup trucks and MY 2015 through 2016 Cadillac Escalade, Chevrolet Suburban, Chevrolet Tahoe, and GMC Yukon SUVs.If the brake assist vacuum pump fails to operate as intended, the amount of brake power assist supplied to the driver can be significantly reduced, extending the subject vehicle stopping distance. GM stated that the root cause of pump failures was due to foreign debris such as oil sludge in the engine oil. GM stated that this debris can become trapped by the oil inlet filter screen. Under normal operation, this screen allows a small amount of oil into the brake vacuum pump. The foreign debris can, over time, clog the pump which can cause a loss of lubrication and a reduction in the amount of vacuum produced leading to a hard pedal and extended stopping distance.On December 13, 2018, GM issued a Special Coverage (N182202780) for the brake vacuum pump issue in MY 2014-2017 trucks and 2015-2017 SUVs on the K2XX platform for 6 years or 72,000 miles. Special Coverage repair includes the replacement of the vacuum pump and vacuum pump belt. Consumers received notification of the coverage via mail. On September 6, 2019, GM notified NHTSA that it was conducting safety recall 19V-645 which reprograms the electronic brake control module (EBCM) and included approximately 3.5 million trucks and SUVs. In October 2019, GM extended the terms of special coverage N182202780 to 10 years or 150,000 miles as well as now including the entire scope of recall 19V-645. In October 2020, GM expanded the scope of coverage N182202780 to include the MY 2018 Escalade and 2019 Tahoe.The remedy implemented in GM recall 19V-645 appears to be sufficient in addressing the safety-related concerns of this issue. Loss of vacuum assist now occurs at a progressive rate as well as there being a more timely warning of a brake problem to the driver through the driver information center (DIC). In view of the recall action and revision to the special coverage, this Preliminary Evaluation is closed. The agency reserves the right to take additional action if warranted by new circumstances. The ODI reports cited above are available for review online at NHTSA.gov under the identification numbers in the attached document.
Additional source detail variants (3)
Service Brakes
On November 20, 2018, the Office of Defects Investigations (ODI) opened PE18-012 to investigate instances of sudden onset of a hard brake pedal that could result in extended stopping distance due to an issue with the brake assist vacuum pump in model year (MY) 2014 through 2016 GMC Sierra 1500 and Chevrolet Silverado 1500 series pickup trucks and MY 2015 through 2016 Cadillac Escalade, Chevrolet Suburban, Chevrolet Tahoe, and GMC Yukon SUVs.If the brake assist vacuum pump fails to operate as intended, the amount of brake power assist supplied to the driver can be significantly reduced, extending the subject vehicle stopping distance. GM stated that the root cause of pump failures was due to foreign debris such as oil sludge in the engine oil. GM stated that this debris can become trapped by the oil inlet filter screen. Under normal operation, this screen allows a small amount of oil into the brake vacuum pump. The foreign debris can, over time, clog the pump which can cause a loss of lubrication and a reduction in the amount of vacuum produced leading to a hard pedal and extended stopping distance.On December 13, 2018, GM issued a Special Coverage (N182202780) for the brake vacuum pump issue in MY 2014-2017 trucks and 2015-2017 SUVs on the K2XX platform for 6 years or 72,000 miles. Special Coverage repair includes the replacement of the vacuum pump and vacuum pump belt. Consumers received notification of the coverage via mail. On September 6, 2019, GM notified NHTSA that it was conducting safety recall 19V-645 which reprograms the electronic brake control module (EBCM) and included approximately 3.5 million trucks and SUVs. In October 2019, GM extended the terms of special coverage N182202780 to 10 years or 150,000 miles as well as now including the entire scope of recall 19V-645. In October 2020, GM expanded the scope of coverage N182202780 to include the MY 2018 Escalade and 2019 Tahoe.The remedy implemented in GM recall 19V-645 appears to be sufficient in addressing the safety-related concerns of this issue. Loss of vacuum assist now occurs at a progressive rate as well as there being a more timely warning of a brake problem to the driver through the driver information center (DIC). In view of the recall action and revision to the special coverage, this Preliminary Evaluation is closed. The agency reserves the right to take additional action if warranted by new circumstances. The ODI reports cited above are available for review online at NHTSA.gov under the identification numbers in the attached document.
Service Brakes, Hydraulic
On November 20, 2018, the Office of Defects Investigations (ODI) opened PE18-012 to investigate instances of sudden onset of a hard brake pedal that could result in extended stopping distance due to an issue with the brake assist vacuum pump in model year (MY) 2014 through 2016 GMC Sierra 1500 and Chevrolet Silverado 1500 series pickup trucks and MY 2015 through 2016 Cadillac Escalade, Chevrolet Suburban, Chevrolet Tahoe, and GMC Yukon SUVs.If the brake assist vacuum pump fails to operate as intended, the amount of brake power assist supplied to the driver can be significantly reduced, extending the subject vehicle stopping distance. GM stated that the root cause of pump failures was due to foreign debris such as oil sludge in the engine oil. GM stated that this debris can become trapped by the oil inlet filter screen. Under normal operation, this screen allows a small amount of oil into the brake vacuum pump. The foreign debris can, over time, clog the pump which can cause a loss of lubrication and a reduction in the amount of vacuum produced leading to a hard pedal and extended stopping distance.On December 13, 2018, GM issued a Special Coverage (N182202780) for the brake vacuum pump issue in MY 2014-2017 trucks and 2015-2017 SUVs on the K2XX platform for 6 years or 72,000 miles. Special Coverage repair includes the replacement of the vacuum pump and vacuum pump belt. Consumers received notification of the coverage via mail. On September 6, 2019, GM notified NHTSA that it was conducting safety recall 19V-645 which reprograms the electronic brake control module (EBCM) and included approximately 3.5 million trucks and SUVs. In October 2019, GM extended the terms of special coverage N182202780 to 10 years or 150,000 miles as well as now including the entire scope of recall 19V-645. In October 2020, GM expanded the scope of coverage N182202780 to include the MY 2018 Escalade and 2019 Tahoe.The remedy implemented in GM recall 19V-645 appears to be sufficient in addressing the safety-related concerns of this issue. Loss of vacuum assist now occurs at a progressive rate as well as there being a more timely warning of a brake problem to the driver through the driver information center (DIC). In view of the recall action and revision to the special coverage, this Preliminary Evaluation is closed. The agency reserves the right to take additional action if warranted by new circumstances. The ODI reports cited above are available for review online at NHTSA.gov under the identification numbers in the attached document.
Service Brakes, Hydraulic:power Assist:vacuum
On November 20, 2018, the Office of Defects Investigations (ODI) opened PE18-012 to investigate instances of sudden onset of a hard brake pedal that could result in extended stopping distance due to an issue with the brake assist vacuum pump in model year (MY) 2014 through 2016 GMC Sierra 1500 and Chevrolet Silverado 1500 series pickup trucks and MY 2015 through 2016 Cadillac Escalade, Chevrolet Suburban, Chevrolet Tahoe, and GMC Yukon SUVs.If the brake assist vacuum pump fails to operate as intended, the amount of brake power assist supplied to the driver can be significantly reduced, extending the subject vehicle stopping distance. GM stated that the root cause of pump failures was due to foreign debris such as oil sludge in the engine oil. GM stated that this debris can become trapped by the oil inlet filter screen. Under normal operation, this screen allows a small amount of oil into the brake vacuum pump. The foreign debris can, over time, clog the pump which can cause a loss of lubrication and a reduction in the amount of vacuum produced leading to a hard pedal and extended stopping distance.On December 13, 2018, GM issued a Special Coverage (N182202780) for the brake vacuum pump issue in MY 2014-2017 trucks and 2015-2017 SUVs on the K2XX platform for 6 years or 72,000 miles. Special Coverage repair includes the replacement of the vacuum pump and vacuum pump belt. Consumers received notification of the coverage via mail. On September 6, 2019, GM notified NHTSA that it was conducting safety recall 19V-645 which reprograms the electronic brake control module (EBCM) and included approximately 3.5 million trucks and SUVs. In October 2019, GM extended the terms of special coverage N182202780 to 10 years or 150,000 miles as well as now including the entire scope of recall 19V-645. In October 2020, GM expanded the scope of coverage N182202780 to include the MY 2018 Escalade and 2019 Tahoe.The remedy implemented in GM recall 19V-645 appears to be sufficient in addressing the safety-related concerns of this issue. Loss of vacuum assist now occurs at a progressive rate as well as there being a more timely warning of a brake problem to the driver through the driver information center (DIC). In view of the recall action and revision to the special coverage, this Preliminary Evaluation is closed. The agency reserves the right to take additional action if warranted by new circumstances. The ODI reports cited above are available for review online at NHTSA.gov under the identification numbers in the attached document.
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