Here's why:
* Clock Spring Function: The clock spring is a spiral-shaped conductor that allows electrical connections to the steering wheel to rotate freely as you turn the wheel. The turn signal switch is connected to the clock spring. Damage or a bad connection within the clock spring can interrupt the signal needed for the auto-cancel feature on one side but not the other. It's common for the clock spring to wear out over time, especially with frequent steering wheel use.
* Side-Specific Wiring: While the switch itself might be new, the problem could lie in the wiring pathway *from* the switch *to* the control module that handles the auto-cancel function. A damaged or poorly reconnected wire within the clock spring for the right turn signal would explain this specific issue.
* Incorrect Installation: Although less likely given the left side works, there's a small chance the new switch wasn't installed perfectly, leading to a poor connection specifically affecting the right side. Double-check the switch's alignment and the secureness of all connections.
* Faulty New Switch (Less Likely): While less probable given the left side works, it's remotely possible the new switch itself has a defect affecting only the right-turn functionality.
Troubleshooting Steps:
1. Check the Clock Spring: This is the most likely culprit. You might need a wiring diagram for your specific Cavalier model to trace the wiring from the switch to the clock spring and then on to the control module. If you're uncomfortable with electrical work, have a mechanic check this. Sometimes a simple reconnection of the clock spring can resolve the issue.
2. Inspect Wiring: Carefully examine the wiring harness related to the turn signal switch, particularly the connections for the right turn signal. Look for any broken, loose, or corroded wires.
3. Verify Switch Installation: Double-check the installation of the new switch to make sure everything is securely connected and aligned correctly. Refer to a repair manual or online guide for your specific Cavalier model.
4. Check Fuses: Although less likely, check the relevant fuses in the fuse box to make sure they aren't blown.
If the problem persists after checking these items, a mechanic with experience working on the electrical system of your Cavalier should be able to diagnose the issue more precisely. The clock spring is a common suspect in problems like this and is often the root cause after replacing the turn signal switch.
