Having problems with gm5 module, whole unit works intermittently ie some days everything fine, locking, wipers, windows, interior lights all perfect, then some days i get none of these, it is all or nothing so not just to do with locking. I suspected the locking relays as this is the common fault so have had these replaced but still having this problem. I know that it wont work when i open the boot and the boot interior lights are flashing, whereas if its working the lights stay lit, dont flash. Its driving me mental as i cannot rely on the car. Any help appreciated?