There are 1 owner-reported speed control & cruise complaints for the 2018 GMC Canyonin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
The warning light is saying engine power reduced having to do with the DEF system
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 26, 2026