VIN Lookup Result

3GTP9EEDXMG458756

2021 GMC Sierra AT4

Decoded via the official NHTSA Vehicle Identification Number database. Permanent shareable link.

Year

2021

Make

GMC

Model

Sierra

Trim

AT4

Body Style

Pickup

Drive Type

4WD/4-Wheel Drive/4x4

Engine

5.3L 8-cyl

Fuel Type

Gasoline

Transmission

Plant

SILAO, GUANAJUATO, MEXICO

Vehicle Type

TRUCK

Manufacturer

GENERAL MOTORS LLC

Owner Complaints

635 filed Get Report →

Market Value

Buyer-paid data Get Report →

Owner-Reported Problems (NHTSA)

Owners have filed 635 complaints with the federal government (NHTSA Office of Defects Investigation) about the 2021 GMC Sierra. Complaints are owner-reported issues — unlike recalls, they are not manufacturer-acknowledged defects, but they show where this model-year has real-world trouble spots.

Engine · 310Power Train · 153Electrical System · 83Engine And Engine Cooling · 49Unknown Or Other · 47Fuel/Propulsion System · 38

About This VIN

VIN 3GTP9EEDXMG458756 identifies a 2021 GMC Sierra AT4 pickup. The first three characters (3GT) form the World Manufacturer Identifier — encoding country, manufacturer, and vehicle type. Characters 4-8 (P9EED) describe the model, body, and engine. The 9th character (X) is the check digit. Position 10 (M) encodes the model year (2021). Position 11 (G) is the plant code — this vehicle was assembled in SILAO, MEXICO. The final six characters (458756) are the unique sequential production number.

Cite This Decode

Permalink:

https://www.carwhere.com/vin/3GTP9EEDXMG458756

Source:

NHTSA vPIC database, decoded 2026-09-21

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