Chevrolet Suburban
Problems & Worst Years

Complaint data on the Chevrolet Suburban splits into two model years here, and the newer one is the busier of the two. The 2023 Suburban logged 75 complaint occurrences concentrated into just eight problem types, and nearly all of them point at the engine: outright engine failure and engine stalling during operation account for 20 reports each, with engine misfire and power loss adding another 14. A transmission malfunction leading to reduced acceleration (8 reports) and a coolant control valve failure (7) round out the top of the list. When most of a year's complaints cluster this tightly around losing power, that deserves attention on a test drive — listen for misfires and be wary of any hesitation under load.

The 2021 Suburban's file is smaller — 58 occurrences — but scattered across 20 different problems. The leading issue is an engine stall at idle traced to fuel pump power control module failure (9 reports), followed by engine misfire and loss of power (7) and misfires attributed to lifter failure (6). Hard shifting from the transmission and headlight adjuster failures appear at lower counts. So while the details differ, both years share the same core theme: complaints about the engine delivering consistent power.

There is recall history to check. The 2021 Suburban is associated with NHTSA campaigns 21V455, 21V739, 24V797, and 25V274, and the 2023 with 25V274 as well. Run the VIN through NHTSA's recall lookup and confirm every campaign shows as completed before money changes hands.

Keep the numbers in perspective: these are owner-filed NHTSA complaints, not measured failure rates, and the 2023 has had less time on the road to accumulate reports than older examples typically get. A thorough pre-purchase inspection — with particular attention to how the engine idles, pulls, and shifts — plus a documented service history will tell you far more about a specific Suburban than its model year will.