Here's why and what you should do:
* Possible Causes: Replacing the drive belt and power steering pump involves potentially disrupting other components. A poorly reconnected sensor, a damaged wire during installation, or even a pre-existing problem exacerbated by the repair could trigger the light.
* Their Responsibility: A reputable shop should have a process for checking for error codes after this type of repair. At minimum, they should check for new codes resulting from their work. They are obligated to diagnose and fix problems directly related to their service.
* What you should do:
* Return to Pep Boys: Go back to the Pep Boys location where the work was done and explain the situation. Show them the illuminated "Service Engine Soon" light.
* Request a Diagnostic Scan: Ask them to perform a diagnostic scan to determine the trouble code(s). This is a relatively quick and inexpensive service.
* Discuss Potential Causes: Discuss with them how the repair *could* be related to the light coming on. Don't accuse them, but present the facts.
* Documentation: If possible, keep records of the repair, including any receipts or work orders.
If Pep Boys refuses to help or diagnose the issue and the issue directly relates to their work, you may need to seek a second opinion from an independent mechanic and pursue further action. However, remember it's best to try to work it out amicably with Pep Boys first. Their diagnostic scan should clarify things significantly.