odicisImage: odicisThe starter on a 2003 Cadillac CTS is located in the enginecompartment directly behind the alternator. The starter faces thefirewall with the starter solenoid on top of the st arter. Where is the serpentine belt located on a 2003 Cadillac CTS? On the front of the engine, wrapped around all the pulleys. Where is the fuse box on a 2003 Cadillac CTS located? Is this answer helpful?Thanks!Give more feedbackThanks!How can it be improved?How can the answer be improved?Tell us how Fuse Box Location Chart Cadillac CTS 2003-2007 - YOUCANIC Fuse Box Location Chart Cadillac CTS 2003-2007 Time Required Difficulty. Easy Category. Fuses This article will help you find the location of the fuses for Cadillac CTS and fuse designation. You can easily identify blown fuses by looking at them. Bad fuses will have Cadillac CTS (2003) - fuse box diagram - Auto Genius Cadillac CTS (2003) – fuse box diagram. Year of production: 2003. Underhood Fuse Block. The underhood fuse block is located in the engine compartment on the passenger’s side of the vehicle.