 
				
	| 1999 GMC C7500 Topkick C7H042 7.4L No Start Randomly crank no start when you let of the key it will backfire, cycle the key and it will fire right up and run smooth, cycle the key the next few times and it will start fine?? When you are cranking and it will not start and you inject propane it will start... 
                        
                            FIX posted 5/5/2012
                               
                    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 9 Replies Received (View Replies)9 Replies Received (Hide Replies)
 | Message Closed 
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| VIN | 1GDJ7H1D4X | 
| Engine | 7.4 L / 8 cyl / GAS | 
| Delivery | Fuel Injection / SEFI | 
| Emissions | OBD-II Compliant | 
| Symptoms | No Start | 
| Occurs | Intermittently | 
Message Closed
            
             Vehicle Data
 Vehicle Data
                1999 GMC C7500 Topkick C7H042
| VIN | 1GDJ7H1D4X | 
| Engine | 7.4 L / 8 cyl / GAS | 
| Delivery | Fuel Injection / SEFI | 
| Emissions | OBD-II Compliant | 
| Symptoms | No Start | 
| Occurs | Intermittently | 
 9 Replies Received
9 Replies Received
 9 Replies Received
          9 Replies Received
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