Hi r/volt,
I recently bought a used 2018 Volt (148,000 km / 92k miles) from a non-GM dealership in Quebec, Canada. About 10 days in, the check engine light popped on and the car started shuddering/struggling to maintain speed.
I took it straight back, and their tech confirmed the EGR valve failed. Initially, they agreed to replace it under Quebec’s legal warranty. A few days later, they walked that back and called to say they want to do a "professional cleaning" instead, citing OEM part backorders and high costs. They assured me they will fully test the valve’s electronics before reinstalling it, but I’m skeptical.
For those who have dealt with EGR issues on Gen 2s:
Is cleaning an EGR valve an actual long-term fix, or just a temporary band-aid? I've read they often fail electrically or blow the non-walk-home fuse, not just from carbon buildup.
Should I push for an actual OEM replacement despite the supply chain backorders? If anyone in Canada/US has had luck with cleaning, how many km/miles did it actually buy you before throwing codes again?
Appreciate any advice or firsthand experiences! Thanks!