Q: My 2002 Buick LeSabre has 98,887 miles on it. Its ignition control module is failing. Since 2014 I have replaced it three times. Can you please tell why my control module keeps failing? It stops… ...

Ignition-Control Module Test Testing the ignition control module is a little trickier. When the module is exposed to a specific heat range—which can vary—it tends to fail.