2019 GMC Sierra electrical problems
100 of the 673 complaints owners filed with NHTSA about the 2019 GMC Sierra 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: 553 manufacturer bulletins, 1 recall. 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 database1 of the 100 reports a crash · 3 a fire · 1 injury. Self-reported, unverified.
Filed per year: 2018: 1 · 2019: 12 · 2020: 22 · 2021: 6 · 2022: 11 · 2023: 8 · 2024: 8 · 2025: 25 · 2026: 7
Half of the 43 owners who gave an odometer reading reported the electrical problem between 1,000 and 26,000 miles. A median of reports, not the life of a part.
673 complaints in all about the 2019 GMC Sierra, 7 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 Sierra 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.
The contact owns a 2019 Gmc Sierra 1500. The contact stated that the electrical system in the vehicle was defective which caused delays with several driver functions. He stated that the vehicle would restart while in operation after coming to a complete stop.
After shutting vehicle off, there's loud noises coming from behind the steering wheel that sounds like relays
Transmission slipping turning corners at 5 MPH, transmission slip take off at hill stop sign, transmission hard shift 2nd to 3rd gear intermitted and vibration 45 MPH to 55 MPH
Just bought this vehicle and took it to the dealer and they don`t have an explanation but the backup camera malfunctions. This could be very dangerous with young kids and when backing up while picking the kids up from school and at local grocery or department stores
Engine light keeps coming on take it to the dealer I guess they reset it and now this is the 3rd time it's now back on, back up camera goes out from time to time
What is on file about the electrical system
Source: NHTSA recalls, investigations and manufacturer communicationsRecall filed under this heading
- 19V888000 CriticalDec 12, 2019 · 350,371 vehicles
- General Motors LLC (GM) is recalling certain 2019-2020 Chevrolet Silverado 1500 and GMC Sierra 1500 trucks. The battery positive (B+) cable rings may have been manufactured with excessive glue, potentially causing an intermittent electrical connection between the B+ cable and alternator.
553 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
P12A6 P30BF P0300 P0442 P0455 P0107 P0340 C0710
Codes a bulletin or an owner’s complaint about the 2019 GMC Sierra names on this model year; a code with a record of its own links it.
Other systems with a record on the 2019 GMC Sierra
Source: the same files- engine problems 337 complaints
- transmission and drivetrain problems 140 complaints
- brake problems 123 complaints
Common questions
Source: NHTSA complaint database, recalls and manufacturer communicationsAre electrical problems common on the 2019 GMC Sierra?
They are documented: NHTSA holds 100 owner complaints naming the electrical system on this model year (15% of everything owners filed about it), and 553 manufacturer bulletins, 1 recall 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 2019 GMC Sierra?
Yes — one campaign is filed under this heading: 19V888000. A recall is matched by VIN; check yours at nhtsa.gov/recalls.
When do electrical problems show up on the 2019 GMC Sierra?
Owners who gave an odometer reading reported it at a median of 7,997 miles; half of them between 1,000 and 26,000. 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.