NHTSA (USA)CriticalDo Not Drive
At a glance
What can fail
A missing drivetrain component in the transfer case can cause the front and/or rear wheels to suddenly lock up without warning.
This page covers 4 recalls and 40 owner complaints for the 2020 Chevrolet Suburban.
Powertrain and electrical issues dominate what 2020 Suburban owners report. On the powertrain side, owners frequently describe sudden loss of acceleration or complete stalling while driving, in some cases with no warning lights beforehand. A few owners report catastrophic engine failure, sudden onset of knocking or clicking followed by a complete loss of power, while others describe transmission problems, specifically a faulty solenoid that limits the vehicle to speeds around 40 mph. Electrical complaints center on intermittent failures across multiple systems at once, with owners reporting power steering and windshield wipers cutting out and then resuming without driver input. The combination of unexpected stalling and intermittent loss of steering is the most consistent thread running through these reports.
40
Total Complaints
2
Crash-Related
1
Fire-Related
By System
The 2020 Chevrolet Suburban has 4 recalls, the most serious of which involve a fuel pump that can crack and leak fuel, raising the risk of a fire, and a transfer case defect on four-wheel-drive models that can cause front or rear wheels to lock up unexpectedly.
The fuel pump on certain vehicles may be missing a pressure regulator, which allows the fuel system to over-pressurize. That pressure can crack the pump body, and the resulting fuel leak becomes a fire risk near any ignition source. On the drivetrain side, the transfer case in 4WD and AWD-equipped models can cause wheel lockup, which raises the risk of losing control or a crash with little warning to the driver.
A separate braking concern affects models equipped with a 5.3-liter engine, a 3.08-ratio rear axle, and four-wheel drive. A faulty sensor can trigger the driveline-protection system unintentionally, causing unexpected braking at one wheel and pulling the vehicle sharply to one side. Finally, certain tires fitted to these trucks were over-cured during manufacturing, which can cause the sidewall to crack or the tread and belt to separate, leading to sudden and rapid air loss while driving.
At a glance
What can fail
A missing drivetrain component in the transfer case can cause the front and/or rear wheels to suddenly lock up without warning.
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Complaints are owner-reported and reflect individual experiences, not confirmed defects. They are distinct from recalls. Data sourced from the national vehicle safety complaint database. See trending complaints →
What the fix does
Dealers will inspect the transfer case and replace it if needed, at no cost to you.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
Certain Continental tires were overheated during manufacturing, which can weaken the tire structure and increase the risk of tire failure.
What the fix does
Dealers will inspect your tires and replace any affected ones at no cost to you.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The fuel pump may lack a pressure regulator, causing the fuel system to build up excessive pressure.
What the fix does
Dealers will replace the fuel pump at no cost to restore proper fuel system pressure control.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
A wheel-speed sensor may fail, causing the brake control computer to incorrectly activate the driveline-protection system while driving 41–60 mph in four-wheel or automatic mode.
What the fix does
Dealers will reprogram the brake control computer at no cost to prevent the system from activating incorrectly.
Summarized — see the official notice for exact wording, dates, and contacts.