GMC Yukon 2000–2006
Common on this vehicle:LeakSmoke or fireWarning light
P0140 is written only in documents for GM vehicles in general. No record or document that names this vehicle states it, and it may not be a code this model year and engine set. The records are shown as their sources write them.
Possible causes
2 records match, but none states a cause. They can be read under “Look closer”.