2018 GMC Acadia electrical problems
109 of the 396 complaints owners filed with NHTSA about the 2018 GMC Acadia name the electrical system (NHTSA’s “Electrical System” heading — wiring, modules, batteries, charging, infotainment and driver displays — NHTSA's broadest heading). Filed under the same heading: 231 manufacturer bulletins. Every figure below is a document in a federal file, linked; none is a failure rate, and none is a verdict on any one car.
What owners filed about the electrical system
Source: NHTSA complaint database3 of the 109 reports a crash · 1 a fire · 3 injuries. Self-reported, unverified.
Filed per year: 2018: 2 · 2019: 28 · 2020: 16 · 2021: 11 · 2022: 5 · 2023: 6 · 2024: 10 · 2025: 21 · 2026: 10
Half of the 50 owners who gave an odometer reading reported the electrical problem between 21,000 and 42,000 miles. A median of reports, not the life of a part.
396 complaints in all about the 2018 GMC Acadia, 10 filed in 2026. The whole picture, every system →
Counts are owner reports to NHTSA, not verified defects, and scale with how many of these were sold; nothing here is a rate. NHTSA groups complaints coarsely, so “Electrical System” means the same area of the vehicle, not one fault.
Across model years: GMC Acadia electrical problems, every year on file →
In owners’ own words
Source: NHTSA complaint databaseFiled with NHTSA by the people who own these cars, about the electrical system. Quoted as written, with anything identifying removed; unverified reports — what was said, not a finding that it was true.
When putting my vehicle in park and pressing the engine off button, I get an error message "shift to park", and the vehicle beeps and will not turn off the electrical, but the car is already in park. I AM unable to turn off my vehicle completely.
When putting my vehicle in park and pressing the engine off button, I get an error message "shift to park", and the vehicle beeps and will not turn off the electrical, but the care is already in park. I AM unable to turn off my vehicle completely.
The contact owns a 2018 Gmc Acadia. When placing the vehicle into park, "action required, shift to park" appeared and a warning chime sounded. When the vehicle was placed into park and shut off, the beeping noise continued. Upon starting the vehicle, the warning noise and indicator turned off and the vehicle operated normally.
I just bought this 2018 Acadia in july and it is now giving me the shift to park alert even though the car is in park. It takes several tries of restarting and shifting to get it to turn off, so far. I'm afraid one time it will be stuck there permanently. This apparently is a known and frequent issue and Gmc needs to do a recall
The contact owns a 2018 Gmc Acadia. When the vehicle was turned off, the instrument panel remained illuminated and "put the vehicle in park" was displayed. As a result, the battery died. The manufacturer was made aware of the failure and stated that there was no recall. The contact was referred to the dealer.
What is on file about the electrical system
Source: NHTSA recalls, investigations and manufacturer communications231 manufacturer bulletins filed under this heading
The 0 newest are listed; every one is on the model year’s page. Quote the document number at a service desk — it is a diagnosis the maker has already written down.
Trouble codes named on this system
P0300 B3055 B3060 B3935 C056D C056E P0128 P0171
Codes a bulletin or an owner’s complaint about the 2018 GMC Acadia names on this model year; a code with a record of its own links it.
Other systems with a record on the 2018 GMC Acadia
Source: the same files- transmission and drivetrain problems 163 complaints
Common questions
Source: NHTSA complaint database, recalls and manufacturer communicationsAre electrical problems common on the 2018 GMC Acadia?
They are documented: NHTSA holds 109 owner complaints naming the electrical system on this model year (28% of everything owners filed about it), and 231 manufacturer bulletins are filed under the same heading. Whether it is a problem on one particular car is a diagnosis, not a count, and a count says nothing about how many were sold.
Is there a recall for the electrical system on the 2018 GMC Acadia?
No recall campaign is filed under this heading for this model year (there are 2 filed under other headings). A bulletin is not a recall: it carries no federal duty to repair for free.
When do electrical problems show up on the 2018 GMC Acadia?
Owners who gave an odometer reading reported it at a median of 32,000 miles; half of them between 21,000 and 42,000. That is when reports cluster, not the life of a part.
What does NHTSA's "Electrical System" heading cover?
Wiring, modules, batteries, charging, infotainment and driver displays — NHTSA's broadest heading. Owners choose the heading when they file, so it says which area of the vehicle the complaint is about, not which part failed.