2019 GMC Sierra
2019 GMC Sierra
Overview
The 2019 GMC Sierra 1500, a significant redesign for the model year, introduced a range of new powertrains and updated features. Generally, the Sierra 1500 demonstrated good reliability for its class, with owners reporting satisfaction with its performance and durability. However, as with any new generation vehicle, some specific areas experienced more attention than others. This analysis focuses on documented technical issues beyond routine maintenance, providing insights into potential concerns for owners and prospective buyers. The data reflects common complaints and known technical faults reported by owners and service centers.
Engine
2.7L Turbocharged I4
Oil Consumption
- Symptoms: Excessive oil consumption between changes, potentially leading to low oil levels.
- Solution: Monitor oil levels regularly, ensure proper engine oil viscosity is used, and in some cases, software updates or internal engine component checks may be required.
- Cost: $100 - $500
Turbocharger Issues
- Symptoms: Loss of power, whistling noises from the engine bay, check engine light illumination.
- Solution: Inspection and potential replacement of the turbocharger assembly or related hoses and seals.
- Cost: $800 - $2000
5.3L V8 EcoTec3
Active Fuel Management (AFM) Lifter Issues
- Symptoms: Engine misfires, rough idling, ticking or knocking noises from the engine, check engine light.
- Solution: Replacement of lifters, camshaft, and potentially the oil pump. Deactivation of AFM system is also an option.
- Cost: $1500 - $3000
6.2L V8 EcoTec3
No widespread issues reported.
- Symptoms: No widespread issues reported.
- Solution: No widespread issues reported.
- Cost: No widespread issues reported.
Transmission
8-Speed Automatic (8L90)
Harsh Shifting / Jerking
- Symptoms: Rough or jerky gear changes, particularly between lower gears; hesitation during acceleration.
- Solution: Transmission fluid flush and refill, software updates for the transmission control module, or internal transmission repairs.
- Cost: $200 - $1500
10-Speed Automatic (10L80)
No widespread issues reported.
- Symptoms: No widespread issues reported.
- Solution: No widespread issues reported.
- Cost: No widespread issues reported.
Suspension
Standard Chassis
No widespread issues reported.
- Symptoms: No widespread issues reported.
- Solution: No widespread issues reported.
- Cost: No widespread issues reported.
Electrical
Infotainment System
Software Glitches
- Symptoms: Screen freezing, unresponsiveness, Bluetooth connectivity issues, Apple CarPlay/Android Auto malfunctions.
- Solution: Software updates for the infotainment system, hard resets, or potential replacement of the head unit.
- Cost: $100 - $800
Battery Drain
Intermittent Battery Drain
- Symptoms: Vehicle failing to start, dead battery after sitting for a short period, often without a clear cause.
- Solution: Diagnosis to identify parasitic draw from modules or accessories, potential battery replacement, or repair of faulty modules.
- Cost: $200 - $700
Exterior
Tailgate
Tailgate Handle/Latch Issues
- Symptoms: Difficulty opening or closing the tailgate, latch not engaging properly.
- Solution: Adjustment or replacement of the tailgate handle and latch mechanism.
- Cost: $150 - $400
LED Lighting
No widespread issues reported.
- Symptoms: No widespread issues reported.
- Solution: No widespread issues reported.
- Cost: No widespread issues reported.
Interior
Seat Actuators
Power Seat Malfunctions
- Symptoms: Power seats failing to move forward, backward, or adjust height.
- Solution: Diagnosis and replacement of faulty seat motors or control modules.
- Cost: $300 - $700
Climate Control
No widespread issues reported.
- Symptoms: No widespread issues reported.
- Solution: No widespread issues reported.
- Cost: No widespread issues reported.
Summary Verdict
The 2019 GMC Sierra 1500, while a strong contender in the full-size pickup segment, exhibits a few common technical concerns that owners should be aware of. The 2.7L Turbo engine has seen reports of oil consumption and turbocharger issues, while the 5.3L V8 can be prone to Active Fuel Management (AFM) lifter problems. Transmission issues, particularly with the 8-speed automatic, have been noted for harsh shifting. Electrical gremlins, such as infotainment system glitches and intermittent battery drain, also appear in owner feedback. Exterior and interior components are generally reliable, with minor issues like tailgate handle problems being the most frequently cited. Overall, the Sierra 1500 offers a solid ownership experience, but vigilance regarding engine oil levels and potential transmission behavior is advised.