 
				
	| 2010 GMC Yukon Denali 6.2L MIL Lamp on Has anyone come across this code p3400 ( cylinder deactivate 
                        
                            FIX posted 7/6/2019
                               
                    iATN Members:  Login to view full TechHelp request Auto Repair Pros: Join iATN to read this TechHelp request Vehicle Owners: Find a nearby iATN member to repair your vehicle 5 Replies Received (View Replies)5 Replies Received (Hide Replies)
 | Message Closed w/FIX 
 | 
| VIN | 1GKUCEEF9A | 
| Engine | 6.2 L / 8 cyl / FLEX | 
| Trans | 6-speed Automatic (Electronic) | 
| Delivery | Fuel Injection | 
| Emissions | OBD-II Compliant | 
| Symptoms | MIL Lamp On | 
Trouble Codes
| P3400 | MDS Rationality - Bank 1 | 
Message Closed w/FIX
            
             Vehicle Data
 Vehicle Data
                2010 GMC Yukon Denali
| VIN | 1GKUCEEF9A | 
| Engine | 6.2 L / 8 cyl / FLEX | 
| Trans | 6-speed Automatic (Electronic) | 
| Delivery | Fuel Injection | 
| Emissions | OBD-II Compliant | 
| Symptoms | MIL Lamp On | 
Trouble Codes
| P3400 | MDS Rationality - Bank 1 | 
 5 Replies Received
5 Replies Received
 5 Replies Received
          5 Replies Received
           Related Documents & Media
  Related Documents & Media   Video
Video