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Vibration Felt In The Pedals Floor And Seat At Highway Speeds - keywords accelerator acceleration L26 throttle

Subject:Vibration Felt In The Pedals, Floor, And Seat at Highway Speeds

Models:2006- 2008 Buick Lucerne with L26 Engine



The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Condition/Concern:

Vibration felt at highway speeds in the pedals, floor and the seat. The vibration is present with the throttle is applied and will stop when the throttle is released.

Recommendation/Instructions:

The cause may be engine vibration being transmitted if the fuel line is making contact with the brake booster. Although the fuel line is well-protected and will not rub through, this vibration can be felt by the customer. Engineering is investigating changes to the fuel line routing to eliminate this potential condition.

Please follow this diagnostic or repair 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.