Here's what you should do:
1. Get the Diagnostic Trouble Code (DTC): You'll need to get the code that's causing the light to illuminate. There are several ways to do this:
* OBD-II Scanner: This is the best option. You can buy a relatively inexpensive OBD-II scanner at most auto parts stores. These scanners plug into the OBD-II port (usually under the dashboard) and will read the DTCs. The code will be a number (e.g., P0171).
* Auto Parts Store: Many auto parts stores will read the codes for free. Just bring your Suburban in.
* Mechanic: A mechanic will definitely be able to read the codes.
2. Research the DTC: Once you have the code(s), search online (e.g., using Google) for its meaning. This will give you an idea of what might be causing the problem. Sites like RepairPal or similar automotive repair resources can be helpful.
3. Fix the Problem: This is the crucial step. Based on the DTC and your research, you may be able to fix the problem yourself (if you're mechanically inclined), or you'll need to take it to a mechanic. Ignoring the problem can lead to further damage and expensive repairs down the road.
4. Clear the Code (After Repair): *Only* after you've addressed the underlying issue, you can clear the code. Many OBD-II scanners have a function to clear codes. Sometimes, disconnecting the battery for a short period (30 minutes to an hour) can also clear the code, but using a scanner is preferred.
Important Considerations for a 1998 Suburban:
* OBD-II Compatibility: While 1998 vehicles are generally OBD-II compliant, make sure your scanner is compatible with older vehicles. Some very basic scanners might not work on older systems.
* Complexity: A 1998 Suburban is an older vehicle, so the repair might be more complex than on a newer car. Don't hesitate to take it to a mechanic if you're not comfortable working on it yourself.
In short: Don't just clear the light. Find out what's wrong and fix it. That's the only reliable way to deal with a check engine light.
