2021 Chevrolet Suburban: shudder or vibration when accelerating

Filed Oct 30, 2026 · Transmission · LA

Shuddering and vibration between 25-40mph during low acceleration. Seems to be getting worse. Have an appointment with a dealership to do a diagnostic and can upload that information later. Service advisor suggested that it is an extremely common problem in my vehicle and very expensive to fix.

Filed Oct 13, 2026 · Engine · 160,000 miles · AL

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 dealer, where a diagnostic inspection revealed a lifter failure, and the engine was replaced. The contact stated that three months after the engine replacement, the engine was leaking oil and the transmission failed. The failure mileage was 160,000.

Filed Jun 12, 2026 · Transmission · IL

2021 Chevy Suburban started to have harsh shifting particularly on acceleration and shuddering at higher rates of speed (feeling like you are driving over a rumble strip). I took it to the dealer, and they confirmed the torque converter was in the process of failing. It's currently in the shop getting a new torque converter. No warning messages/lights had yet appeared. Technician at dealer stated that this was a common failure with this model.

Filed May 26, 2026 · Transmission · TX

Suburban started to have shudder at lower rpm on acceleration. I took it to the dealer and they confirmed the valve is bad. They are unsure at this time but depending on damage from the bad value my Suburban may also need a new torque convertor or transmission.

Filed Jan 30, 2026 · Fuel system · FL

My 2021 Chevrolet Suburban stalled while driving in late September 2025 and had to be towed to a dealership. The vehicle is subject to an active fuel pump power control module safety recall that has been in effect since 2021. The vehicle was brought in specifically for repair of this issue. The work was processed under warranty, and I was charged a deductible. After learning the repair was directly related to an active safety recall, I requested reimbursement of the deductible, as recall repairs should be completed at no cost. That reimbursement request was denied. I have since been informed that the recall repair was never “completed,” and the recall still shows open in the manufacturer’s system. I am now experiencing shuddering and symptoms consistent with a potential stall recurrence. The original stall occurred while I was transporting my children, including special needs children who require regular transportation to school and therapies. The vehicle failure left us stranded at night in an unsafe area. Due to the prior stall, the unresolved recall status, and the recurrence of symptoms, I do not feel the vehicle is safe to operate. Thank you for your attention to this matter, [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Apr 12, 2022 · Engine · 12,800 miles · ID

The contact owns a 2021 Chevrolet Suburban. The contact stated while driving 80 MPH, the vehicle started shuddering and the engine was misfiring. The traction control, adaptive cruise control, and check engine warning lights illuminated. The vehicle then downshifted to 40 MPH independently. The contact turned the hazard lights on and continued to drive approximately 35-40 MPH. The vehicle was taken to the local dealer where it was diagnosed that two sets of engine lifters were bent and needed to be replaced. The manufacturer was notified of the failure and covered the replacement of one set of engine lifters under warranty while the other set was replaced at the owner’s expense. The vehicle was repaired. The failure mileage was approximately 12,800.