2020 model year · 0+ owner reports · Updated April 2026
According to Au7o's analysis of 0+ owner reports, the 2020 Chevrolet Tahoe has 3 documented known issues, with 2 rated critical. The most serious are 8L90 8-Speed Transmission Shudder ($500-$4,500 repair) and AFM/DOD Lifter Failure - V8 Cylinder Deactivation ($3,000-$6,000 repair). Across all issues, repair costs range from $500 to $6,000. DIY maintenance guides at au7o.io.
On the 2015-2020 Chevrolet Tahoe, the 2015-2020 Tahoe uses the GM 8L90 8-speed automatic with the same widespread torque converter shudder affecting Silverado and Escalade. Shudder occurs at light throttle between 25-50 mph. Root cause is torque converter clutch material contaminating the fluid. GM extended warranty to 6 years/100,000 miles under Customer Satisfaction Program 18302.
Fluid exchange with Mobil 1 Synthetic LV ATF HP (GM 19417577) can resolve early-stage shudder. Severe cases need torque converter replacement. Check if VIN qualifies for Customer Satisfaction Program 18302.
Parts and tips from 0+ owners who fixed this issue
On the 2007-2020 Chevrolet Tahoe, the Tahoe 5.3L and 6.2L V8 engines with Active Fuel Management (AFM) use collapsible hydraulic lifters that commonly fail between 80,000-120,000 miles. Failed AFM lifters cause misfires on deactivation cylinders (1, 4, 6, 7), ticking noises, and potential camshaft and cylinder wall damage. This is the same issue affecting the Silverado and Escalade. GM issued TSB #18-NA-077 acknowledging the problem. The VLOM (Valve Lifter Oil Manifold) must be replaced along with all 16 lifters.
Replace all 16 lifters and VLOM assembly. Many owners perform an AFM delete with non-AFM cam, lifters, and Valley cover using a Texas Speed or BTR kit. A Range Technology AFM Disabler (RA003B) can prevent AFM activation as a preventive measure on engines with good lifters. Labor is 12-18 hours.
Parts and tips from 0+ owners who fixed this issue
On the 2007-2020 Chevrolet Tahoe, tahoe models with Autoride (RPO Z55) or Magnetic Ride Control (RPO Z95) use air springs and an electronic compressor that fail between 80,000-120,000 miles. Air springs crack from age causing the vehicle to sag. The compressor burns out from overwork. Same system as Escalade and Yukon. Many owners convert to conventional coil springs.
Replace failed air springs and/or compressor. Or convert to coil springs with an Arnott or Strutmasters conversion kit which eliminates recurring failures. Arnott C-2835 is the popular front/rear conversion with electronic bypass module.
Parts and tips from 0+ owners who fixed this issue
TIRES
General Motors LLC (GM) is recalling certain 2020 Buick Enclave, Cadillac XT4, XT5, Escalade, Escalade ESV, Chevrolet Suburban, Tahoe, Traverse, GMC Yukon, Yukon XL, 2018-2021 Chevrolet Express, GMC Savana, 2019-2020 Chevrolet Blazer, Silverado 1500, GMC Acadia, Sierra 1500, and certain Continental tires sold to the aftermarket for various model year 2018-2021 vehicles. The affected tires were cured for too long during production.
FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP
General Motors LLC (GM) is recalling certain 2020 Cadillac Escalade, Escalade ESV, Chevrolet Camaro, Silverado 1500, Suburban, Tahoe, GMC Sierra 1500, Yukon, and Yukon XL vehicles. The fuel pump may be missing a pressure regulator, allowing for over-pressurization of the fuel system.
SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:WHEEL SPEED SENSOR/TONE RING
General Motors LLC (GM) is recalling certain 2015-2020 Chevrolet Suburban, Tahoe, and GMC Yukon, and 2014-2018 Chevrolet Silverado 1500 and GMC Sierra 1500 vehicles equipped with a 5.3-liter engine, a 3.08-ratio rear axle and four-wheel drive. If a wheel-speed sensor fails, while the vehicle is traveling between 41 and 60 mph in four-wheel or automatic mode, the Electronic-Brake Control Module (EBCM) software may activate the driveline-protection system.
SEAT BELTS:FRONT
General Motors, LLC (GM) is recalling certain 2014-2016 Chevrolet Silverado 1500, 2015-2016 Chevrolet Tahoe, and 2014-2015 GMC Sierra 1500 vehicles that may have received an incorrect replacement tensioner cable assembly as part of a previous recall remedy or a subsequent repair. The flexible steel cable connecting the driver's seat belt to the outboard side of the seat may be repeatedly bent over the seat side shield as the driver enters and exits the vehicle causing the cable to fatigue and separate.
SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM
General Motors LLC (GM) is recalling certain 2018 Cadillac Escalade, Chevrolet Silverado 1500 and Tahoe, GMC Sierra 1500 and Yukon vehicles equipped with either a 5.3L or 6.2L V8 engine. The output of the mechanical vacuum pump can decrease over time, decreasing the amount of vacuum/power brake assist.
+ 5 more recalls. Check all on NHTSA.gov
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According to Au7o's analysis of 0+ owner reports, the 2020-2020 Chevrolet Tahoe has 3 documented issues. The most frequently reported are: 8L90 8-Speed Transmission Shudder, AFM/DOD Lifter Failure - V8 Cylinder Deactivation, Autoride Air Suspension Compressor and Air Spring Failure. Of these, 2 are rated critical and should be addressed promptly.
The 2020-2020 Chevrolet Tahoe has 3 known issues documented across 0+ owner reports. 2 issues are rated critical: 8L90 8-Speed Transmission Shudder and AFM/DOD Lifter Failure - V8 Cylinder Deactivation. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
Repair costs for known Chevrolet Tahoe issues range from $500 to $6,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, 8L90 8-Speed Transmission Shudder, typically costs $500-$4,500 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
The 2015-2020 Tahoe uses the GM 8L90 8-speed automatic with the same widespread torque converter shudder affecting Silverado and Escalade. Shudder occurs at light throttle between 25-50 mph. Root cause is torque converter clutch material contaminating the fluid. GM extended warra… Repairs typically run $500-$4,500. Severity: high.
The Tahoe 5.3L and 6.2L V8 engines with Active Fuel Management (AFM) use collapsible hydraulic lifters that commonly fail between 80,000-120,000 miles. Failed AFM lifters cause misfires on deactivation cylinders (1, 4, 6, 7), ticking noises, and potential camshaft and cylinder wa… Repairs typically run $3,000-$6,000. Severity: high.
Tahoe models with Autoride (RPO Z55) or Magnetic Ride Control (RPO Z95) use air springs and an electronic compressor that fail between 80,000-120,000 miles. Air springs crack from age causing the vehicle to sag. The compressor burns out from overwork. Same system as Escalade and… Repairs typically run $600-$3,000. Severity: medium.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.
