Buick Rendezvous starter won't turn over, radio and AC not functioning while other electrical components work on Buick Rendezvous

Some Buick Rendezvous owners report experiencing issues where the starter won't turn over while the radio and AC are also non-functional, despite other electrical components working. These problems may stem from a faulty starter motor, which could be due to an electrical issue or a defect within the motor itself. Additionally, some owners report ignition switch failures that lead to intermittent electronic failures, affecting the starter, radio, and AC, or even causing a no crank condition. Battery problems are also reported, as a bad battery can prevent the starter from cranking effectively, impacting the power supply to the radio and AC. To address these issues, it is recommended that owners have the starter motor inspected, consider replacing the ignition switch if failure signs are present, and test the battery to ensure it is providing adequate voltage for all electrical components.