6.6L LB7 Engine - Fuel Rail Pressure Regulator Harness Connector Servicing - kw pump wire diesel intermittent driveability GMT800

When servicing the vehicle with the VIN you entered, the following diagnosis might be helpful if the vehicle exhibits the described symptoms.

6.6L LB7 Engine connector components for the fuel rail pressure regulator connector is not currently available in the J-38125 terminal kit.

On 2001-2004 6.6L (LB7) engines, the fuel rail pressure regulator connector is part of the main engine harness. To repair the fuel rail pressure regulator connector on a 2001-2004 6.6L ( LB7) engine, order the fuel injection pump jumper harness (P/N 97327685). On 2004 6.6L (LLY) engines, there is a short jumper harness that goes between the main engine harness and the fuel rail pressure regulator. To repair the fuel rail pressure regulator connector on a 6.6L (LB7), order the LLY jumper harness (P/N 97327685), cut off the regulator connector, and splice onto the 6.6L (LB7) engine harness using proper wiring repair methods. Be sure to leave as much of the metal EMI shielding on the modified harness as possible.

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Parts Information

P/N 97327685 Harness Assembly, fuel injection pump

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Please follow this diagnosis process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed. If these steps do not resolve the condition, please contact GM TAC for further diagnostic assistance. This diagnostic approach was developed for the vehicle with the VIN you entered and should not be automatically be used for other vehicles with similar symptoms.

(01-04 CHEVROLET SILVERADO, GMC SIERRA C2, C3, K2, K3 WITH 6.6 LB7 ENGINE) and (03-04 CHEVROLET KODIAK, GMC TOPKICK C4 C5 WITH 6.6 LB7 ENGINE)

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