Ralph C Grand Rapids , MI November 16, 2014 Appliance: Model JENNAIRE CVG 2420 Irratic spark module operation; no spark ignition most of the time To replace spark module remove four gas burner and fan switch knobs, then remove four screws inside burner area on left side of knob panel. Remove glass panel and set aside. Then Remove the four light boxes; requires special hex type driver to remove the two screws fastening each light box. Once removed, remove the Phillips like screws at each end of metal panel, lift off and set aside. Spark module held in with two screws at front, remove screws and module pulls out to front. Transfer each of four front wires one at a time to new module, note position of colored wires (take picture or write position of colored wires) and remove all wires. Insert new module and insert wires into original position as old module. Reinstall in reverse order as removed? 6 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes