 
				
	| 2008 GMC Yukon XL 1500 SLE 5.3L Transmission 1-2 shift 3-4 shift We removed driveshaft to drop fuel tank. fuel lines were leaking. replaced lines, re-installed tank and shaft and topped off transfer case. Now after road testing truck shifting erratic almost like slipping. Problem did not exist before. GM Transmission in... 
                        
                            FIX posted 7/19/2019
                               
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| VIN | 1GKFK16388 | 
| Engine | 5.3 L / 8 cyl / FLEX | 
| Trans | 4-speed Automatic (Electronic) | 
| Delivery | Fuel Injection | 
| Affected | Transmission 1-2 Shift 3-4 Shift | 
| Conditions | Erratic Shifting, Slip? | 
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             Vehicle Data
 Vehicle Data
                2008 GMC Yukon XL 1500 SLE
| VIN | 1GKFK16388 | 
| Engine | 5.3 L / 8 cyl / FLEX | 
| Trans | 4-speed Automatic (Electronic) | 
| Delivery | Fuel Injection | 
| Affected | Transmission 1-2 Shift 3-4 Shift | 
| Conditions | Erratic Shifting, Slip? | 
 9 Replies Received
9 Replies Received
 9 Replies Received
          9 Replies Received
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