2023 Chevrolet Suburban: Oil consumption and check engine light on intermittently
Common wear/failure (not a recall)
Symptoms
Owners of the 2023 Suburban report: oil consumption and check engine light on intermittently. CarComplaints.com lists 1 owner complaints, average mileage 58,000 miles.
NHTSA has 87 owner complaints for the 2023 Suburban in this area. Examples:
- NHTSA complaint ODI #11770951 (filed 10/13/2026): “I was driving south on highway 395 with 2 of my friends on our way home from vacation, which is a 2 lane road in the mountains. about 45 miles north of victorville, ca. as i was accelerating, my vehicle all of a sudden dropped adaptive cruise control, the engi…”
- NHTSA complaint ODI #11770069 (filed 10/09/2026): “Tuesday october 6th, 2026, i dropped my 2 children off at school and was driving on the highway to work through heavy traffic when i had a suddenly loud knocking coming from my car, transmission not wanting to shift properly, high rpm’s for extended periods of…”
Likely causes
Sources do not establish a single root cause; diagnosis is needed. Owner-reported fixes are listed below.
Fix, in plain English
Most common owner-reported solutions on CarComplaints.com: they suggest either change piston ring or engine replacement (1 reports). Check for open recalls and extended warranty coverage with a dealer before paying out of pocket.
DIY difficulty: Pro
Internal engine work (lifters, oil consumption, fuel dilution diagnosis) requires engine teardown or dealer software/tests. (Our assessment.)
Cost
CarComplaints.com owners report a typical repair cost of about $10,500 (owner-reported average, not a quote).
Typical parts (search links, no affiliate codes)
AutoZone · O'Reilly · Advance · RockAuto
Sources
- CarComplaints.com: Oil consumption and check engine light on intermittently (2023 Suburban)
- NHTSA complaints API, 2023 Suburban
Page last updated .