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	 2001 GMC Yukon XL 1500 SLT 5.3L MIL Lamp on 
		
		tank pressure voltage reads 1.25v when i use my modis to command purge solenoid to 10% or more there is no change to tank pressure voltage. 12v to purge solenoid and opens when control wire is grounded manually. im thinking ecm driver is not grounding control ... 
                        
                            FIX posted 1/25/2014
                             
                 
                            
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           Message Closed w/FIX 
	   
	   
	   
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| VIN | 3GKEC16T91 | 
| Engine | 5.3 L / 8 cyl / GAS | 
| Trans | 4-speed Automatic (Electronic) | 
| Delivery | Fuel Injection | 
| Emissions | OBD-II Compliant | 
| Symptoms | MIL Lamp On | 
| Occurs | Intermittently | 
Trouble Codes
| P0440 | EVAP System Leak Detected | 
| P0443 | EVAP Canister Purge Valve Circuit Malfunction | 
Message Closed w/FIX
            
            
 Vehicle Data
                2001 GMC Yukon XL 1500 SLT
| VIN | 3GKEC16T91 | 
| Engine | 5.3 L / 8 cyl / GAS | 
| Trans | 4-speed Automatic (Electronic) | 
| Delivery | Fuel Injection | 
| Emissions | OBD-II Compliant | 
| Symptoms | MIL Lamp On | 
| Occurs | Intermittently | 
Trouble Codes
| P0440 | EVAP System Leak Detected | 
| P0443 | EVAP Canister Purge Valve Circuit Malfunction | 
                            
6 Replies Received
          6 Replies Received
          
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