When replacing the fuel pump what should the psi be for the aftermarket pump

Hi, this is Bo, an auto expert on RepairPal's Car Genius team! For your 2002 Cadillac Escalade with the 6.0L V8, the fuel pressure spec is **55–62 psi** at the fuel rail. When selecting an aftermarket fuel pump, make sure it’s rated to deliver within that range to avoid engine performance issues. Low-pressure pumps can cause power loss and hard starts, while excessively high pressure can overwhelm the injectors and throw off the air-fuel mixture. Stick with a reliable brand—cheaper pumps often lack the durability for a heavy-duty engine like yours. If you're still having cranking issues after replacement, verify the pressure at the rail with a fuel pressure gauge to rule out additional issues like a failing fuel pressure regulator. If you need any further advice or want help finding a trusted RepairPal shop in your area, please feel free to call us at 877-913-1554.