2021 GMC Acadia · symptom sheet
Engine stalls or loses power while driving
- 28owner reports
- 41,000median miles
- 1involved a crash
Newest report Sep 14, 2026 · checked Oct 2, 2026
93 of the 149 complaints on this car are about the fuel and propulsion. 28 of those describe stalling, which makes it the most reported problem on the 2021 Acadia.
Tick what matches of 28 reports
Stalling on other Acadia years
Report counts are for each model year on its own, so a newer car has had less time to collect them. Model years with too few reports of it for a sheet: 2015, 2016, 2020.
What this problem usually is
Stalling reports are some of the most alarming on the site. The engine quits while the car is moving, sometimes on a highway and sometimes at a stop. Many owners say it restarted right away and the dealer found no stored code, which is part of why these complaints pile up before anything gets fixed.
What got replaced
Owners who name the part that was replaced mention the fuel pump (14 reports) and the battery (3 reports).
Recalls and investigations
One recall on the fuel and propulsion covers the 2021 model year. A recall on the same system isn't always the same failure, so read the defect text.
The fuel supply lines may be improperly attached and seated.
All 2 recalls on the 2021 GMC Acadia, with the owner complaints on each recalled system
NHTSA investigations into the fuel and propulsion on the Acadia
Non-crash engine compartment fires. Closed sep 8, 2008, led to recall 08V-441.
None of these investigations covers the 2021 model year.
When it happens
The middle half of failures fell between 23,800 and 46,000 miles, from the 9 reports that gave a mileage.
Is this a known problem?
The manufacturer has sent NHTSA 10 service bulletins or notices for the 2021 GMC Acadia that deal with this problem. Newest first.
Federal rules make a manufacturer send NHTSA a copy of any notice about a defect that goes to more than one dealer or owner. Most of these are service bulletins, the repair instructions manufacturers send to dealers. NHTSA generally leaves safety recall bulletins out of this file, and recalls are listed separately.
This service bulletin provides a procedure to replace the FPDCM if found to cause customers concerns of Crank No Start, Stalling, Malfunction Indicator Lamp (MIL) Illuminated – DTC P023F or P129F Set.
This service bulletin provides repair information to correct a customer concern of No Crank, No Start, Quick Start/Stall, No FOB Detected, Key FOBs Inoperative, B3924 00, B3925 00, B3926 00, B3927 00, B3928 00 Set.
This service bulletin advises the tech that the rotational Clicking Noise Heard After Engine Shut Down may be normal characteristics of the vehicle.
This Preliminary information communicates a vehicle may come to the dealer with a complaint of no start, stalling, rough idle, no acceleration, loss of power, erratic shifting, fuel gauge inoperative, MIL illuminated with various codes stored.
6 more on the 2021 GMC Acadia page.
What owners wrote
“Car stalled at intersection and unable to restart. The car would not go into neutral to get the car out of the roadway. The fuel pump driver or fuel pump fail with 41k miles. The condition is very unsafe.”
Filed May 24, 2025 · 41,000 miles
“Vehicle gives, âDriver assist reduced Drive with careâ warning randomly. Lane change will no longer work and engine light will come on. Problem is sporadic and does not stay active. Engine light will shut off after a day. Once vehicle is shut off cooling fan runs extremely loud and for a long period of time draining battery.”
Filed Mar 27, 2025
“While driving all displays, gauges, screens shut off. Unable to determine speed or anything. Car still drives but there is zero driver feedback. System will come back on and the it will happen again. Has been going on for 2 years. Dealer unable to determine the issue.”
Filed Mar 27, 2025
“Vehicle stalled on major interstate while giving no warning Vehicle would not start after failure Had to be towed to dealership Found to be a faulty fuel pump module Service advisor even said this is a common problem Vehicle mileage was at 33,478 This could have been a deadly accident”
Filed Nov 12, 2024
Should you keep driving it?
This page can't tell you that. 1 of 28 reports involved a crash. Owners who file are the ones who had a bad experience, and nobody checks their reports. If the problem affects steering, braking, power or a fire risk, treat it as a safety fault and have it inspected before a long or high-speed drive.
File your own report with NHTSA. Complaint counts are how a problem gets an investigation. How reports land on this sheet.
Guide Paid for this repair before a recall covered it? How recall reimbursement works