Complaint records

2020 GMC Sierra Complaints

427 consumer-submitted complaints on record for the 2020 GMC Sierra, grouped by component category.

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427 Total complaints
11 Crash reports
5 Fire reports
6 Injury reports
Quick answer: The 2020 GMC Sierra has 427 consumer-submitted complaints in our database. The most common complaint categories are engine, power train, electrical system. Enriched records show 11 crash reports, 5 fire reports, and 6 injury reports.
Complaint data reflects consumer-submitted reports. A complaint is not proof of a defect, recall, or manufacturer fault. Enriched severity fields come from official bulk records when the complaint can be matched by ODI number.

Buyer interpretation

How to use these complaints before buying

Complaint records are most useful when they turn into inspection points, seller questions, and comparison checks against nearby model years.

Complaint volume

427 consumer-submitted complaints are matched to this model year. Treat the count as a research signal, then read the actual summaries for repeated symptoms.

Pattern to inspect

The most common categories are engine, power train, electrical system. Use those categories as a test-drive checklist instead of judging the vehicle from the total count alone.

Severity flags

Enriched records include 11 crash reports, 5 fire reports, 6 injury reports, and 0 fatality reports. These fields come from complaint records and should be read in context.

Mileage clue

Mileage is available on 118 complaints, with an average reported failure mileage of 44,233 miles. Compare that with the mileage on the listing.

Questions to ask the seller

  • Have you had any problems related to engine, power train, electrical system?
  • Can I see recent maintenance and repair records?
  • Has the vehicle ever been towed, involved in a crash, or repaired for the same issue twice?
  • Can we also check the recall record for this 2020 GMC Sierra?
Used-car checklist

Use these complaints before the test drive.

Build a buyer checklist to turn these issues into questions and inspection points.

2020 GMC Sierra
Build buyer checklist Compare with other years Sends year, make, and model to pre-fill your checklist.

How severe are the 2020 GMC Sierra complaints?

Enriched complaint indicators from official bulk records.

11 Crash
5 Fire
6 Injury
0 Fatality
28 Towed
4 Medical attention

Mileage at failure is available on 118 complaints ; average reported mileage is 44,233 miles.

Most common incident states: MI (6), NC (5), TX (4), OH (3), NY (2), AR (1), CA (1), CT (1).

What are the most common 2020 GMC Sierra complaint categories?

427 total complaints on record

Latest complaints

Showing 426-427 of 427 complaints.

Date Component Summary Severity Mileage
Jan 2020 UNKNOWN OR OTHER THE BACKUP CAMERA IS ENTIRELY TOO BRIGHT AT NIGHT. IT IS NEARLY IMPOSSIBLE TO SEE THE MIRRORS DUE TO THE BRIGHTNESS
Incident: Jan 2020 		Crash: No Fire: No 1,000
Dec 2019 EXTERIOR LIGHTING WHEN MAKING RIGHT TURNS IN THE DARK THE HEADLIGHTS DO NOT CAST LIGHT TO THE RIGHT SO YOU CAN SEE WHERE YOU ARE TURNING. THIS IS ESPECIALLY A PROBLEM IN THE RURAL WITHOUT STREETLIGHTS IT IS TOTALLY BLACK FROM THE DRIVERS SEAT LOOKING OVER THE RIGHT SIDE OF THE HOOD OR OUT THE RIGHT WINDOW.
Incident: Oct 2019 		Crash: No Fire: No 1,500

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