2018 Buick Enclave Engine Problems

The contact owns a 2018 Buick Enclave. The contact stated that after picking up the vehicle from the dealer for a different failure, the exhaust pipe made an abnormally loud sound while driving. The check engine and other unknown warning lights were illuminated. The vehicle was taken back to the dealer, who determined that the catalytic converter had failed and informed the contact that the catalytic converter and the front exhaust pipe needed to be replaced. The vehicle was not repaired. The contact related the failure to Special Coverage Adjustment: N212356540 (Front Exhaust Pipe); however, the VIN was not covered. The manufacturer was made aware of the failure and advised the contact to report the failure to the NHTSA Hotline. The failure mileage was approximately 100,000.

WHILE AT A STOP SIGN AT A BUSY INTERSECTION, PRESSED BRAKE AND TACHOMETER WENT TO OFF INSTEAD OF AUTO-STOP. ENGINE STILL ON BUT PRESSING GAS DIDN'T DO ANYTHING.. TRANSMISSION LIGHT WENT ON. HAD TO PUSH THE START/STOP BUTTON A FEW TIMES BEFORE ENGINE TURNED OFF AND ON AGAIN. *TR

DURING NORMAL COMMUTE, VEHICLE BEGAN BUCKING BADLY, WOULD NOT ACCELERATE AND BEGAN ROLLING BACKWARDS. CHECK ENGINE LIGHT ILLUMINATED. SHUT VEHICLE DOWN, RESTARTED, AND THE PROBLEM SEEMED TO CLEAR. BROUGHT VEHICLE TO DEALERSHIP, FOUND CODES P0011, P0014, P0021 AND P0024 SET. DEALERSHIP CONTACTED GM, WHO ACKNOWLEDGED THE ISSUE BUT OFFERED NO FIX. THEY ARE STILL STUDYING THE ISSUE AND HAVE NO RESOLUTION. DEALERSHIP CLEARED CODES AND RELEASED VEHICLE BACK TO US. ISSUE MAY RETURN AT ANY TIME. HOW CAN I TRUST MY FAMILY IN A VEHICLE THAT MAY SUDDENLY, WITHOUT WARNING, BEGIN BUCKING, STOP ACCELERATING AND CAUSE AN ACCIDENT? THIS IS AN UNSAFE CONDITION THAT GM NEEDS TO ADDRESS. I AM DISAPPOINTED THAT THEY HAVE NO RESOLUTION. DEALERSHIP REFERENCED BULLETIN PIP5569E, SO GM ACKNOWLEDGES THE ISSUE. I FOUND REFERENCES FROM ALMOST A YEAR AGO TO THIS ISSUE VIA GOOGLE - THAT'S VERY DISCONCERTING THAT, IN THIS TIME, GM CANNOT IDENTIFY A FIX.

THE "START STOP" FEATURE CAUSED A LIFE THREATENING HESITATION UPON ACCELERATION FROM A FULL STOP AT AN INTERSECTION. ENCLAVE DOES NOT OFFER ANY OVERRIDE FOR THIS OPTION. THERE MUST BE A FIRMWARE UPDATE PROVIDED BY GM TO ALLOW IT TO BE DISABLED!!! THIS IS GOING TO KILL SOMEBODY!!!

2018 BUICK ENCLAVE. CONSUMER WRITES IN REGARD TO ENGINE SHUTING DOWN WHEN VEHICLE STOPS. *AS THE CONSUMER STATED THE START STOP FEATURE INTERMITTENTLY SHUTS DOWN THE ENGINE WHEN THE VEHICLE IS IDLE AND DOES NOT RECOVER QUICK ENOUGH FOR SAFE STARTS IN TRAFFIC. *JS

TL* THE CONTACT OWNS A 2018 BUICK ENCLAVE. WHILE THE VEHICLE WAS AT A STOP, IT STALLED AND HESITATED TO MOVE. THE CONTACT STATED THAT THE AUTOMATIC STOP FEATURE ON THE VEHICLE CAUSED THE FAILURE. THE VEHICLE WAS TAKEN TO CANNON CHEVROLET BUICK CADILLAC (100 N THACKER LOOP, OXFORD, MS 38655, (662) 550-4208) WHERE THE CONTACT WAS INFORMED THAT THE VEHICLE WAS BUILT WITH THE AUTOMATIC STOP FEATURE AND THERE WAS NO REMEDY TO REPAIR THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND INFORMED THE CONTACT THAT THERE WAS NO REMEDY. THE FAILURE MILEAGE WAS APPROXIMATELY 3,500. CONSUMER STATED THE ENGINE AUTO STOP FEATURE CAUSES ENGINE TO GO DEAD EVERY TIME I COME TO COMPLETE STOP. ENGINE STARTS AFTER BREAK IS RELEASED. ON 9/22/18 ENGINE STOPPED WHILE CROSSING A 4 LANE HIGHWAY. UPDATED 10/26/18*JP