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LBZ D-max fuel press reg and TSB 08-06-04-029c
This TSB says to replace the entire high pressure fuel system if the actual peak to peak pressure varies more then 435 psi from desired. I can understand that if I always have low pressure, but I can command 26,000 psi for 2 minutes and actual stays pretty clo... Login to read more. 
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| Engine | 6.6 L |
| Trans | 5-speed Automatic (Electronic) |
Vehicle Data
2006 GMC Sierra 2500 HD SL 6.6L
| Engine | 6.6 L |
| Trans | 5-speed Automatic (Electronic) |
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