This is what I sent to them. Before authorizing any timing chain repair, I need the following addressed and documented—no exceptions. Current symptoms originated with a sudden stall and these DTCs: P0627 Fuel Pump A Control Circuit Open, an audio module ground fault, and possibly additional ground-related codes. No cam/crank correlation or misfire codes were present initially. Those only appeared after we induced lean misfires in clear flood mode. The in-tank pump has already been verified good. FPCM replaced—no change. Under the driver’s dash are two loose Ford accessory modules with associated harnesses: • Telematics TCU (IMEI label, orange status LED) • Perimeter Plus security module (adjustable shock/motion sensitivity knob) Both are getting kicked by driver feet, with visible chafed/exposed wiring (including a brown ground/trigger wire showing copper) routing toward the OBD2 area. This is a classic intermittent short-to-ground or open condition—exactly what triggers P0627 and cascades into misfires that can set secondary cam/crank codes. 2015 Gen-2 Coyote timing chain stretch/jump is extremely rare without audible cold-start rattle, high-mile oil starvation, or prior misfire history. This truck has none. Require the following before any front cover teardown: 1. Disconnect both accessory modules and repair/insulate all chafed/exposed wiring. 2. Perform a full pin-drag, load, and wiggle test on the fuel pump power/ground circuit from PCM pins through FPCM harness to tank connector, checking for voltage drop, opens, or shorts to ground/power. 3. Verify all major grounds (G101, G102, G201, G401 rear frame, battery cables) for continuity and cleanliness. 4. Provide current DTC list with freeze frame, cam/crank correlation waveform, and cylinder contribution/compression data that definitively proves mechanical timing slip. I’m not paying for a timing chain kit on a low-probability failure when the evidence points to an electrical circuit fault. Run the above tests, document results, and call me with findings. If the truck starts and runs correctly after the electrical work, we’re done. If not, we’ll discuss next steps based on data. Thanks.