2020 Chevrolet Tahoe Transmission Problems
7 owner-reported transmission complaints from NHTSA data
Data sourced from NHTSA public database. For informational purposes only. Always consult a qualified mechanic.
Owner Complaints (7)
Your engine's valve lifters failed at about 75,000 miles, requiring replacement of one lifter bank. Within 5 months, the other lifter bank failed and damaged your camshaft. You may notice a tapping noise from the engine when lifters fail, but no warning lights appear. Failed lifters can cause severe engine damage while driving, which is a serious safety concern.
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While accelerating onto a highway at 45 mph going uphill, your engine RPMs climbed to 3.5 but the vehicle wouldn't accelerate properly. Your service engine light came on, and inspection revealed your transmission fluid was dark and gritty instead of its normal red color. You'll likely need a complete transmission replacement. This issue may require flushing the transmission system and replacing the entire transmission unit.
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While driving, your engine RPMs suddenly increased and then your vehicle completely stopped in the middle of the road with no warning signs, sounds, or dashboard warning lights beforehand. You weren't able to move the vehicle to safety, creating a dangerous situation. The transmission is being replaced to fix this issue.
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Your engine is making an unusual ticking or lifter noise coming from the valve covers area. You're concerned it may be related to failing lifters, a problem you've heard affects other GM vehicles. You have a dealership appointment scheduled to have this inspected and repaired.
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Your car's engine revved up while stopped at a red light, but the vehicle wouldn't move forward. After turning it off and restarting, it moved only about 100 yards before the same problem happened again, acting as if it was stuck in first gear. No warning lights appeared on your dashboard before or after the problem, despite regular maintenance.
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High pitched whine between 2nd and 3rd gear, dealership states fluid and filter full of metal shavings transmission needed replaced
While driving making left and right turns a clicking noise was noticed. Vehicle also felt like it was engaged in 4wd when making turns on loose pavement by skipping, vehicle confirmed to be in 2wd mode. Vehicle has less than 10,000 miles. Dealership was able to determine that the noise was coming from the front hubs and saw metal shavings.Chevy Dealership suggested to have both front hubs replaced.