Cadillac DTS cranks but won't turn over, fuel pump and filter replacement needed on Cadillac DTS

Some Cadillac DTS owners report experiencing issues where the vehicle cranks but won't turn over, often indicating potential problems with the fuel pump or fuel filter. A common cause for this issue is a faulty fuel pump, which can prevent the engine from receiving the necessary fuel to start. Additionally, a clogged or malfunctioning fuel filter may restrict fuel flow, leading to similar starting difficulties. Owners are advised to check fuel pressure using a gauge, as low pressure could signal a failing fuel pump. Listening for a humming sound from the fuel tank when the ignition is turned on can also help identify fuel pump issues. Furthermore, inspecting the fuel pump relay and fuse is crucial, as faulty components can impede fuel pump operation. Other factors, such as a weak battery or a bad starter, may also contribute to starting problems, so it's important to rule these out. For accurate diagnosis and resolution, consulting a professional mechanic is recommended.