NHTSA owner reports · September 18, 2026 snapshot.
Electrical System complaints
11 reportsClear category filter75,000 miles · Apr 29, 2022
Electrical System
The contact owns a 2015 GMC Yukon Denali. The contact stated that while driving the air condition system was blowing hot air and then became inoperable. There were no warning lights illuminated. The vehicle was taken to the local dealer where it was diagnosed and determined that the A/C condenser and A/C control module needed to…
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The contact owns a 2015 GMC Yukon Denali. The contact stated that while driving the air condition system was blowing hot air and then became inoperable. There were no warning lights illuminated. The vehicle was taken to the local dealer where it was diagnosed and determined that the A/C condenser and A/C control module needed to be repaired. The vehicle was not repaired. The manufacture was not notified of the failure. The approximate failure mileage was 75,000.
NHTSA ODI #11462781
60,000 miles · Jan 26, 2020
Electrical System
TAIL LIGHTS SOMETIMES WORK AND MOST OF THE TIME DOES NOT WORK. I SEE HUNDREDS OF COMPLAINTS ABOUT THIS AND NOTHING IS BEING DONE ABOUT IT! THIS WILL BE MY FIRST AND LAST TIME BUYING A GMC CAR. THIS IS VERY DANGEROUS AND A VERY EXPENSIVE PROBLEM TO HAVE!
NHTSA ODI #11302141
64,000 miles · Aug 21, 2019
Electrical SystemExterior Lighting
TL* THE CONTACT OWNS A 2015 GMC YUKON DENALI. WHILE REVERSING THE VEHICLE, THE CONTACT WAS INFORMED THAT THE BRAKE LIGHTS WERE NOT ILLUMINATING. HOWEVER, WHEN THE VEHICLE WAS IN DRIVE, THE BRAKE LIGHTS ILLUMINATED. ALSO, WHEN THE CONTACT DEPRESSED THE BRAKE PEDAL TO SLOW OR STOP THE VEHICLE, THE BRAKE LIGHTS DID NOT ILLUMINATE. …
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TL* THE CONTACT OWNS A 2015 GMC YUKON DENALI. WHILE REVERSING THE VEHICLE, THE CONTACT WAS INFORMED THAT THE BRAKE LIGHTS WERE NOT ILLUMINATING. HOWEVER, WHEN THE VEHICLE WAS IN DRIVE, THE BRAKE LIGHTS ILLUMINATED. ALSO, WHEN THE CONTACT DEPRESSED THE BRAKE PEDAL TO SLOW OR STOP THE VEHICLE, THE BRAKE LIGHTS DID NOT ILLUMINATE. THE CONTACT CALLED COULTER BUICK GMC PHOENIX (1202 E CAMELBACK RD, PHOENIX, AZ 85014, (602) 396-5994) AND WAS INFORMED THAT THERE WERE NO RECALLS. THE DEALER REFERRED THE CONTACT TO THE MANUFACTURER. THE MANUFACTURER WAS NOT CONTACTED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE FAILURE MILEAGE WAS 64,000.
NHTSA ODI #11245472
60,000 miles · Jun 28, 2019
Electrical SystemExterior LightingService Brakes
THE LEFT BRAKE LIGHT FAILED WITH 57K MILES. THE RIGHT ONE THEN FAILED AT 61K MILES. THE DEALER WANTED $735 EACH TO FIX THEM, AS THEY CLAIM THEY NEED TO REPLACE THE ENTIRE LED HOUSING. THE DEALER IS WELL-AWARE THAT THIS IS A COMMON PROBLEM, AND IT WOULD APPEAR BASED ON GOOGLING THE ISSUE THAT MANY OTHERS HAVE EXPERIENCED THIS …
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THE LEFT BRAKE LIGHT FAILED WITH 57K MILES. THE RIGHT ONE THEN FAILED AT 61K MILES. THE DEALER WANTED $735 EACH TO FIX THEM, AS THEY CLAIM THEY NEED TO REPLACE THE ENTIRE LED HOUSING. THE DEALER IS WELL-AWARE THAT THIS IS A COMMON PROBLEM, AND IT WOULD APPEAR BASED ON GOOGLING THE ISSUE THAT MANY OTHERS HAVE EXPERIENCED THIS FAILURE FROM GM.
NHTSA ODI #11228279
Mileage unknown · Apr 29, 2019
Electrical System
DRIVERS SIDE LED TAILLIGHT STOPPED WORKING AND THE WHOLE ASSEMBLY HAS TO BE REPLACED AT $800. LED'S SHOULD LAST LIFE OF THE VEHICLE THAT IS WHY YOU CAN'T JUST REPLACE A BULB. I HAVE READ HUNDREDS OF POSTS WITH THE SAME ISSUE. GM SHOULD DO A RECALL OR OFFER A STEEP DISCOUNT ON THE REPLACEMENT.
NHTSA ODI #11204411
77,254 miles · Mar 26, 2019
Electrical SystemExterior Lighting
THE PASSENGER SIDE TAIL LIGHT IS INTERMITTENT THE DEALER SAID THAT IT WOULD COST $875.00 FOR THE PART TO FIX. HE SAID THAT IT WAS A BAD MANUFACTURING JOB. AND HE ALSO SAID THAT THERE WERE A LOT OF SUV'S COMING IN WITH THE SAME PROBLEM. THANK YOU
NHTSA ODI #11191686
80,000 miles · Mar 23, 2019
Electrical SystemExterior Lighting
REAR DRIVE SIDE BREAK LIGHT IS OUT BECAUSE OF POOR CONSTRUCTION.
NHTSA ODI #11191107
41,000 miles · Sep 30, 2018
Electrical SystemExterior Lighting
DRIVERS AND PASSENGER BRAKE LIGHT GO OUT INTERMITTENTLY. PASSENGER STAYS OFF FOR LONG PERIODS OF TIME. LOOKED INTO REPLACING NO IDEA IF IT WILL FIX THE PROBLEM. COST AT LEAST $500. EACH PARTS ONLY. I HAVE SEEN SO MANY OTHER VEHICLES LIKE MINE SAME PROBLEM. HEADLIGHTS ALSO GOING OUT, WATER INSIDE OF COVER. LED AND TURN SIGNAL WE…
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DRIVERS AND PASSENGER BRAKE LIGHT GO OUT INTERMITTENTLY. PASSENGER STAYS OFF FOR LONG PERIODS OF TIME. LOOKED INTO REPLACING NO IDEA IF IT WILL FIX THE PROBLEM. COST AT LEAST $500. EACH PARTS ONLY. I HAVE SEEN SO MANY OTHER VEHICLES LIKE MINE SAME PROBLEM. HEADLIGHTS ALSO GOING OUT, WATER INSIDE OF COVER. LED AND TURN SIGNAL WENT OUT ON DRIVERS SIDE REPLACED FOR A COST OF $900.00, (JUST FOR THE HEADLIGHT) AGAIN NO GUARANTEE IT WILL KEEP WORKING. ALSO BATTERY WENT DEAD REPLACED BATTERY. NEW BATTERY ALSO WENT DEAD. CAR ALARM WENT OFF THE NIGHT BEFORE BATTERY DEAD IN THE MORNING. HAS BEEN IN THE SHOP 3 WEEKS NOW. SAME THING HAPPENS ALARM GOES OFF KILLS BATTERY. SHOWS MASSIVE DRAIN AND SET ABOUT 32 CODES. THE DRAIN DOESN'T REGISTER AFTER THAT. RECHARGE BATTERY CAR IS NOT RUNNING WHEN THIS HAPPENS. PROBLEM REPEATS EVERY TIME AFTER CHARGING THE BATTERY. SOMETHING IN THE WIRING IS SHORTING OUT. TESTED BOTH BATTERIES THEY BOTH TEST GOOD. AFRAID OF WHAT WILL HAPPEN NEXT WITH THE ELECTRICAL ON THE VEHICLE. NOT SURE IF THE LIGHTS HAVE ANYTHING TO DO WITH THIS OR NOT. WHEN ORDERING HEADLIGHT AND ASKING ABOUT BRAKES TOLD BY DEALER PARTS THEY SURE ARE SELLING A BUNCH OF THESE. I HAVE HAD PEOPLE DRIVING DOWN THE ROAD STOP ME TO TELL ME MY BRAKE LIGHT IS OUT. I DID NOT KNOW THAT THE TURN SIGNAL ON THE FRONT WAS NOT WORKING UNTIL A CAR PULLED OUT IN FRONT OF ME WHILE WAITING TO MAKE A LEFT TURN. I GOT OUT AND LOOKED AT THE LIGHT AND IT WAS NOT WORKING. I CANNOT DRIVE THE VEHICLE AT ALL BECAUSE IT KEEPS DRAINING THE BATTERY. I HAVE A ASE CERTIFIED MASTER TECHNICIAN WORKING ON THE VEHICLE IN A REPUTABLE SHOP.
NHTSA ODI #11132402
50,000 miles · Aug 29, 2018
Electrical System
THE REAR LED TAILIGHT GOES IN AND OUT, WHILE DRIVING THE CAR. THE DEALER WILL NOT FIX THE PROBLEM UNLESS THE LIGHT IS NOT WORKING, BUT BECAUSE IT IS INTERMITTENT, WE CANNOT GET IT TO FAIL AT THE DEALERSHIP. WE HAVE HAD THIS PROBLEM FOR 2 YEARS AND IT IS A SAFETY ISSUE AS THE TAIL LIGHT WILL NOT WORK.
NHTSA ODI #11123163
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
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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