What can cause window or lock failure?
Window or lock failure can come from more than one body & accessories branch. Operating conditions, warning behavior, scan data, and physical tests are needed to separate the supported cause from look-alikes.
Plausible causes
- Body control, accessory, harness, or water-intrusion concern
- Local motor, switch, latch, camera, or module path
- Shared supply, network, chafe, or water intrusion
Useful next checks
- Record a video while parked, exact affected functions and triggers, recent glass/trim/collision work, rain/wash timing, and wet areas. Do not pull random fuses or probe restraint/high-voltage wiring.
- All-module scan including U-codes and low-voltage history
- Loaded feed/ground and network-topology tests
Sources and method
This answer provides hypotheses and a verification plan, not a component verdict. Exact repair procedures require authoritative service information for the specific vehicle.
Intermittent Electrical Concerns from Harness Chafing · NHTSA / General Motors