Duramax Owners, CP4 Pump Destroyed Your Engine? Claim Deadline PASSED—But You Still Have Options Until May 2026
The November 6, 2025 deadline to file claims for the $50 million GM CP4 fuel pump settlement has passed. However, if you own a 2011-2016 Silverado or Sierra with the 6.6L Duramax, you can still receive 50% reimbursement for CP4 repairs performed at GM dealerships until May 6, 2026, or 200,000 miles—whichever comes first. The…








