 
				
	| 2004 GMC Sierra 1500 5.3L Poor Idle Quality, Misfire, MIL Lamp on I replaced the intake manifold gaskets and the fuel pump. The pump was in spec on pressure but customer chose to replace it as a preventative repair. The intake gaskets were replaced because of suspicsion of a vac. leak and I swear I still hear it on the drive... 
                        
                            Summary posted 4/8/2010
                               
                    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 18 Replies Received (View Replies)18 Replies Received (Hide Replies)
 | Message Closed w/Summary 
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| VIN | 1GTEK14T74 | 
| Engine | 5.3 L / 8 cyl / GAS | 
| Trans | 4-speed Automatic (Electronic) | 
| Delivery | FI | 
| Emissions | OBD-II Compliant | 
| Symptoms | Poor Idle Quality, Misfire, MIL Lamp On | 
| Occurs | Cold, Idle | 
Trouble Codes
| P0300 | Multiple Misfire Detected | 
Message Closed w/Summary
            
             Vehicle Data
 Vehicle Data
                2004 GMC Sierra 1500
| VIN | 1GTEK14T74 | 
| Engine | 5.3 L / 8 cyl / GAS | 
| Trans | 4-speed Automatic (Electronic) | 
| Delivery | FI | 
| Emissions | OBD-II Compliant | 
| Symptoms | Poor Idle Quality, Misfire, MIL Lamp On | 
| Occurs | Cold, Idle | 
Trouble Codes
| P0300 | Multiple Misfire Detected | 
 18 Replies Received
18 Replies Received
 18 Replies Received
          18 Replies Received
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