2020 Chevrolet Tahoe: Engine complaints
Owner-reported issue (NHTSA complaints, not a recall)
Symptoms
NHTSA has 14 owner complaints for the 2020 Chevrolet Tahoe that list the engine component. Complaints are individual owner reports, not verified defects.
Examples:
- NHTSA complaint ODI #11767621 (filed 09/29/2026): “I got in my vehicle and turned it on. once on, it asked me to roll down my passenger side window and roll it back up. i thought that was odd, but did so. my vehicle had completely reset. the clocks were not correct and none of our controls were set. i reset everything, but thought that was weird. a …”
- NHTSA complaint ODI #11767654 (filed 09/29/2026): “The water pump failed. platinum chevrolet has the old one as they have replaced it. i was driving in [xxx] on a crowded street when i had to quickly pull over because of a terrible noise and the smell of leaking coolant. it made it dangerous for me to get to a parking spot in traffic without warning…”
- NHTSA complaint ODI #11754970 (filed 08/05/2026): “The 6.2l l87 v8 engine in my 2020 chevrolet tahoe premier rst suffered a catastrophic internal component failure while operating. the engine experienced a sudden, severe internal mechanical breakdown involving the crankshaft or connecting rod bearings, completely disabling the powertrain.this failur…”
Likely causes
These complaints do not establish a single root cause; read the examples above and get a diagnosis.
Fix, in plain English
No single fix is established by these reports. Check your VIN for open recalls at nhtsa.gov/recalls, ask a dealer about technical service bulletins (TSBs) or extended warranty coverage, then have the system diagnosed.
DIY difficulty: Pro
Internal engine work (lifters, oil consumption, fuel dilution diagnosis) requires engine teardown or dealer software/tests. (Our assessment.)
Cost
No sourced cost range for this issue. Get a written quote after diagnosis.
Typical parts (search links, no affiliate codes)
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Sources
Page last updated .