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2005 GMC Sierra 3500 SLE 6.6L Low Power
Posted to GM Driveability on 3/8/2012 6 Replies

this truck came in with code p1093 in history, light off. We have a tech2 so ran frp up to 160mpa, no problem. Power brake in shop also no problem but on the road any heavy request pulls frp back to 7500psi. If I let up it will come back and run fine until I g...

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  Related Documents & Media  2005 GMC Sierra 3500 SLE

 
Message Closed w/FIX

car Vehicle Data

2005 GMC Sierra 3500 SLE

VIN 1GDJC33275
Engine6.6 L / 8 cyl / DIESEL
Trans5-speed Automatic (Electronic)
DeliveryFuel Injection / dit
EmissionsNot OBD-II Compliant
SymptomsLow Power
OccursUnder Load
Misc.P1093

Trouble Codes

P1093Fuel Rail Pressure Low During Power Enrichment
Message Closed w/FIX

car Vehicle Data

2005 GMC Sierra 3500 SLE

VIN 1GDJC33275
Engine6.6 L / 8 cyl / DIESEL
Trans5-speed Automatic (Electronic)
DeliveryFuel Injection / dit
EmissionsNot OBD-II Compliant
SymptomsLow Power
OccursUnder Load
Misc.P1093

Trouble Codes

P1093Fuel Rail Pressure Low During Power Enrichment