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	 2008 Chevrolet Silverado 1500 LTZ 5.3L Stumbles at startup  
		
		I have cleaned the mass airflow sensor and the throttle body and relearned idle speed. Also when I replaced the spark plugs they were a little blackened like it is running to rich. When I look at the live data the fuel trims look normal. Also the act and e... 
                        
                            FIX posted 5/24/2022
                             
                 
                            
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         Message Closed w/FIX 
	   
	   
	   
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| VIN | 1GCEC19018 | 
| Engine | 5.3 L / 8 cyl / FLEX | 
| Trans | 4-speed Automatic (Electronic) | 
| Delivery | Fuel Injection / SEFI | 
| Emissions | OBD-II Compliant | 
| Symptoms | Stumbles at Startup | 
| Occurs | Hot, Intermittently, When Starting. | 
Message Closed w/FIX
            
            
 Vehicle Data
                2008 Chevrolet Silverado 1500 LTZ
| VIN | 1GCEC19018 | 
| Engine | 5.3 L / 8 cyl / FLEX | 
| Trans | 4-speed Automatic (Electronic) | 
| Delivery | Fuel Injection / SEFI | 
| Emissions | OBD-II Compliant | 
| Symptoms | Stumbles at Startup | 
| Occurs | Hot, Intermittently, When Starting. | 
                            
21 Replies Received
          21 Replies Received
          
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