2016 Buick Enclave electrical system problems

What owners report

• “The X50A underhood fuse block (passenger side, near battery) has melted through at terminal 51 / run crank relay location. Plastic housing is burned through with charred bus bars and melted connector underneath, next to main battery cable. Vehicle first showed "Service Stabilitrak," "Service Traction Control," and "Engine Power Reduced," then went to crank-no-start condition requiring repeated jump starts to move. Codes P1682 and P0689 present. Each jump causes more heating at melted area. Thi…”

  NHTSA complaint · filed 11/01/2026

• “I purchased this used 2016 Buick Enclave in July 2026. Shortly after purchase, the vehicle began repeatedly jerking and hesitating while driving. During occurrences, Traction Control/StabiliTrak warnings appeared and the vehicle experienced loss of power and difficulty accelerating normally. I reported the jerking/drivability problem to the selling dealer. On July 27, 2026, the selling dealer attempted a repair after I reported the jerking/drivability problem. Within approximately five minutes …”

  NHTSA complaint · filed 08/31/2026

• “Traction stabilization light comes on very frequently and vehicle loses power, step on gas and it sputters can’t get out of any one’s way, they throw parts at it and never fixes. From feedback off internet a big problem 2008-2017 enclaves”

  NHTSA complaint · filed 07/08/2026

• “Odometer Fraud. The contact purchased a 2016 Buick Enclave on November 25, 2025 from an independent dealer. It was later discovered that there was a mileage discrepancy. At the time of purchase, the Odometer reading was 102,068. After contacting Endurance Warranty Company, the contact was informed that the Odometer mileage was 193,000. No other agency was contacted regarding the mileage discrepancy.”

  NHTSA complaint · filed 12/01/2025

• “During a rainstorm water is entering the fuse box under the glove box and the carpet and padding underneath is soaking wet on the right front floor.When the fuse case was opened water started to drip out.The engine continues to run with the key off and the only way to stop it is to pull the ignition fuse under the hood. Unfortunately the battery died by morning and I could not get it charged for a few days. Now I have learned how to take the battery cover off which is located in the back of the …”

  NHTSA complaint · filed 02/16/2025

• “The contact owns a 2016 Buick Enclave. The contact stated that while accelerating, the fourth gear jumped to the fifth gear and was stuck. No warning lights illuminated. The vehicle was taken to the dealer where the transmission specialist test-drove the vehicle and was unable to duplicate the failure. The vehicle was then taken to an independent mechanic where it was diagnosed that the gear was burnt, and the transmission needed to be replaced. Additionally, the contact stated that the air bag …”

  NHTSA complaint · filed 10/13/2022

• “2016 BUICK ENCLAVE HAD A SERVICE AIRBAG LIGHT/MESSAGE ILLUMINATED ON DASHBOARD CONTINUOUSLY. I BROUGHT THE VEHICLE INTO THE DEALERSHIP FOR A DIAGNOSTIC TEST & THE ISSUE IS THE WIRING HARNESS FOR THE PASSENGER SIDE AIRBAG. WHEN THE TECHNICIAN MOVES THE WIRING HARNESS THE LIGHT COMES & GOES. ADDITIONALLY, I FOUND SERVICE BULLETINS TALKING ABOUT THE SAME PROBLEM FOR VARIOUS GM PRODUCTS.”

  NHTSA complaint · filed 07/29/2019

• “BROUGHT THE CAR IN EARLIER THIS YEAR BECAUSE THE CAR WAS STALLING. THEY TOLD ME IT MAY HAVE BEEN A LOSE CABLE, BUT LIKELY WAS NOTHING. IN THE LAST 3 WEEKS THE CAR HAS STALLED 3 TIMES WITH MY KIDS IN THE CAR. I BROUGHT THE CAR IN 3 DAYS AGO AND THEY LOOKED AT IT AND SAID NOTHING WAS WRONG WITH IT. YESTERDAY IT STALLED AGAIN AND MY WIFE CAME VERY CLOSE TO GETTING REAR-ENDED WITH THE KIDS IN THE CAR. THIS IS A CAR THAT IS 1 YEAR OLD WITH 5.500 MILES ON IT. THIS SHOULD NOT BE HAPPENING AND THE …”

  NHTSA complaint · filed 09/26/2016

Unverified owner reports from NHTSA's public complaint database.

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