1GT49PEY4LF160222

The 2020 GMC Sierra AT4 is a robust 4WD truck powered by a 6.6L Duramax diesel engine, delivering impressive performance with a V-shaped turbo configuration. It seats six and is equipped with advanced safety features such as Dynamic Brake Support, ABS, ESC, and optional Lane Departure Warning and Forward Collision Warning. The vehicle also boasts standard keyless ignition, backup camera, and LED headlamps, making it a well-rounded choice for both work and leisure. Manufactured in Flint, Michigan, this truck offers a blend of power, safety, and modern conveniences.

Decoded VIN:

Make

GMC

Manufacturer Name

GENERAL MOTORS LLC

Model

Sierra

Model Year

2020

Plant City

FLINT

Series

2500

Trim

AT4

Vehicle Type

TRUCK

Plant Country

UNITED STATES (USA)

Plant State

MICHIGAN

Body Class

Pickup

Doors

Gross Vehicle Weight Rating From

Class 3: 10,001 - 14,000 lb (4,536 - 6,350 kg)

Cab Type

Crew/Super Crew/Crew Max

Number of Wheels

Wheel Size Front (inches)

Wheel Size Rear (inches)

Number of Seats

Number of Seat Rows

Transmission Speeds

Drive Type

4WD/4-Wheel Drive/4x4

Brake System Type

Hydraulic

Engine Number of Cylinders

Displacement (CC)

6600.0

Displacement (CI)

402.75671102523

Displacement (L)

6.6

Engine Model

L5P - DI, DURAMAX, GEN 5 VAR. 1

Fuel Type - Primary

Diesel

Engine Configuration

V-Shaped

Turbo

Yes

Seat Belt Type

Manual

Curtain Air Bag Locations

All Rows

Front Air Bag Locations

1st Row (Driver and Passenger)

Side Air Bag Locations

1st Row (Driver and Passenger)

Anti-lock Braking System (ABS)

Standard

Electronic Stability Control (ESC)

Standard

Traction Control

Standard

Tire Pressure Monitoring System (TPMS) Type

Direct

Auto-Reverse System for Windows and Sunroofs

Standard

Keyless Ignition

Standard

Crash Imminent Braking (CIB)

Optional

Blind Spot Warning (BSW)

Optional

Forward Collision Warning (FCW)

Optional

Lane Departure Warning (LDW)

Optional

Backup Camera

Standard

Parking Assist

Optional

Dynamic Brake Support (DBS)

Standard

Automatic Crash Notification (ACN) / Advanced Automatic Crash Notification (AACN)

Standard

Daytime Running Light (DRL)

Standard

Headlamp Light Source

LED

Semiautomatic Headlamp Beam Switching

Standard

Adaptive Driving Beam (ADB)

Optional

Rear Cross Traffic Alert

Optional

Most common problems:

Brake fluid leaks

Hydraulic brake systems rely on brake fluid to function properly. Leaks can lead to reduced braking efficiency and potential brake failure.

Brake fade

Prolonged use of brakes under heavy loads or at high speeds can cause the brakes to overheat, leading to reduced braking power.

Abs malfunction

The Anti-lock Braking System (ABS) may malfunction, leading to longer stopping distances and reduced control during hard braking.

Brake pad wear

Over time, brake pads wear out and need to be replaced to maintain effective braking performance.

Master cylinder failure

The master cylinder is crucial for converting pedal pressure into hydraulic pressure. Failure can lead to a complete loss of braking capability.

Turbocharger issues

The L5P Duramax engine is turbocharged, and issues with the turbocharger can lead to reduced power and efficiency.

Fuel injector problems

Diesel engines like the L5P Duramax can experience fuel injector failure, leading to poor engine performance and increased emissions.

Dpf clogging

The Diesel Particulate Filter (DPF) can become clogged, leading to reduced engine performance and increased exhaust emissions.

Egr valve failure

The Exhaust Gas Recirculation (EGR) valve can fail, leading to poor fuel economy and increased emissions.

Turbo lag

The V-Shaped, 8-cylinder L5P Duramax engine may experience turbo lag, which is a delay in power delivery when accelerating.

Cooling system failures

Diesel engines generate a lot of heat, and a failure in the cooling system can lead to engine overheating and potential damage.

Glow plug failure

Diesel engines use glow plugs to start in cold weather, and failure of these plugs can lead to difficulty starting the engine.

Transmission issues

The GMC Sierra is known to have occasional transmission issues, which can affect the overall performance and drivability of the vehicle.

Exhaust system corrosion

The exhaust system can be prone to rust and corrosion, especially in areas with harsh weather conditions or where road salt is used.

Sensor failures

Modern engines rely on various sensors for optimal performance. Failures in sensors like the oxygen sensor or mass air flow sensor can lead to poor engine performance and increased fuel consumption.

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