2019 Chevrolet Suburban: Shifter clutch pack failure killed 6L80 6-speed transmission
Common wear/failure (not a recall)
Symptoms
Owners of the 2019 Suburban report: shifter clutch pack failure killed 6L80 6-speed transmission. CarComplaints.com lists 1 owner complaints, average mileage 85,000 miles.
NHTSA has 38 owner complaints for the 2019 Suburban in this area. Examples:
- NHTSA complaint ODI #11753997 (filed 07/31/2026): “I bought this vehicle in august 202 from bayway chevrolet in pearland, texas. the vehicle is now at 101,703 miles. the vehicle is a 2019 chevy suburban lt with the 8l43 transmission. approximately 1 year ago, we started to have issues with the electronic scr…”
- NHTSA complaint ODI #11752858 (filed 07/25/2026): “Transmission broke.…”
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: replace transmission .. metal slivers kill pumps (1 reports). Check for open recalls and extended warranty coverage with a dealer before paying out of pocket.
DIY difficulty: Pro
Diagnosis needs a scan tool; repair or replacement needs a lift, transmission jack and the manufacturer's fluid fill/relearn procedure. (Our assessment.)
Cost
CarComplaints.com owners report a typical repair cost of about $7,000 (owner-reported average, not a quote).
Typical parts (search links, no affiliate codes)
AutoZone · O'Reilly · Advance · RockAuto
Sources
- CarComplaints.com: Shifter clutch pack failure killed 6L80 6-speed transmission (2019 Suburban)
- NHTSA complaints API, 2019 Suburban
Page last updated .