2023 Chevrolet Suburban Reliability Report

Failed OnStar telematics modules and sudden stalls make up most of this group. The engine cuts out during turns and the transmission drops into neutral without leaving codes, and a battery replacement did not cure it. Another report describes an engine that seized in a parking lot and needed replacement. A failed coolant control valve causes overheating and power loss, with the part on backorder. Recall 25V274 for possible crankshaft or connecting rod defects is cited as open with no fix available, alongside a long transmission repair.

Parts shortages for recall 25V274000 drive most of these reports, not actual failures. Owners got the recall notice, but dealers have no parts for the repair, and at least one declined to inspect the engine. Most of these complainants have not had a failure and object to the long wait. One report describes an abnormal engine sound the dealer could not duplicate. Another describes a check engine light traced to a failed coolant control valve. That valve was not replaced, and the special coverage program it fell under was not applied.

Slippery factory running boards cause falls when wet, and this category includes 2 injuries. A dealer called the running boards a common problem. In a separate report, the front fuel tank strap lost its bolt at about 30 mph and the tank dragged on the road, which raises a real fire risk. Paint bubbling on a vehicle bought new is also reported. Each issue rests on a single report, so no broad pattern is visible beyond the running boards.

Loss of braking and sudden brake warnings appear in these reports. One describes a "Brake failure" alert followed by a total loss of brakes on a hill. Another says the vehicle failed to stop, and even accelerated, at about 3,000 miles, and the problem came back after a dealer repair. A third describes the vehicle stuck in park with ABS, check engine, and park brake warnings lit. With only 3 complaints there is no clear pattern, but each failure carries a direct crash risk.

A second-row center belt locks in automatic locking mode and keeps tightening. It restricts the passenger's breathing and will not release even after the vehicle is turned off. This category includes 1 injury. Separately, a vehicle was delivered new without one of its required third-row seatbelts, and the manufacturer declined to fix it after the warranty expired. Both problems are easy to miss if the rear rows are rarely used.

Power steering failure is the more serious report here. A steering warning appeared on a nearly new vehicle, and the dealer blamed the rack and pinion but could not fix it after a month in the shop. Another report describes an ESC error message about brake pads along with a wheel that locks. Both raise loss-of-control concerns, though there are only 2 complaints in this category.