Let Us Know What Happens, My Wife Has An 06 Pacifica And I Want To Hear All About Them

The Cadillac From 1999 Should Be A 4.6L. My Only Advice Is To Checkl For A Vacuum Leak Near The Power Steering Pump. The Backfire Flap Is Bad About Having A Vacum Leak That Only Shows Up As A Misfire At Times.

I Would Make Sure All Connections To The Fuel Injector/s Before Taking The Fuel Pump Any Further. We Have Had The Connection To The Injector Outside The Intake Eat Our Lunch. There Should Be TSB's About This Connection.