2021 Chevrolet Suburban: Lifter and cam issue
Common wear/failure (not a recall)
Symptoms
Owners of the 2021 Suburban report: lifter and cam issue. CarComplaints.com lists 1 owner complaints, average mileage 96,000 miles.
NHTSA has 96 owner complaints for the 2021 Suburban in this area. Examples:
- NHTSA complaint ODI #11770937 (filed 10/13/2026): “The contact owns a 2021 chevrolet suburban. the contact stated that while driving at 55 mph, the vehicle shuddered and shut off completely without warning. an attempt was made to restart the vehicle, but the engine failed to restart. the vehicle was towed to a…”
- NHTSA complaint ODI #11769371 (filed 10/06/2026): “Cylinders were misfiring and lifters had to be completely replaced along with pushrod and camshaft. this cost me $7018.64 to fix out of my own pocket. received the vehicle back, and there was a slight ticking sound that was new to me. scheduled to bring the ve…”
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: none clearly reported. 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
No sourced cost range: get a written quote after diagnosis.
Typical parts (search links, no affiliate codes)
AutoZone · O'Reilly · Advance · RockAuto
Sources
Page last updated .