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.

Some Cadillac DTS owners report experiencing starting issues, often attributed to a dead battery, which can result in a clicking sound and a no-start condition. Additionally, some owners have reported problems with the starter, including hard starting, slow cranking, or clicking noises, indicating a potential fault. Concerns with the alternator have also been noted as a cause of starting difficulties. Furthermore, loose battery connections or poor ground connections can mimic symptoms of a dead battery, leading to confusion during diagnosis. Issues with the ignition system and the fuel system have also been identified as possible reasons for the Cadillac DTS failing to start. To effectively diagnose the no-start problem, it is advised that owners systematically rule out each of these potential causes to identify the exact issue and carry out necessary repairs.