2010 CADILLAC ESCALADE Electrical System Problems

My son was driving home from work down Highway 288 in Houston and the car just died and did not start. The door locks were going up and down like it was trying to reset and lock the car. I had it fixed and they said it was the fuel pump was out. We had the fuel pump fixed and a new battery put in. Would this cause it to loose power immediately and the door locks to go crazy?

VEHICLE STOPS AND SHUTS OFF WHEN TRAVELING I TOOK EVERY THING OFF THE KEYCHAIN AND EVERY THING GOT BETTER. *TR

SECOND LEMON FROM THE TEXAS PLANT. FIRST WAS 07 GMC YUKON WITH MASSIVE ELECTRICAL PROBLEMS. THIS NEW CADILLAC, ALSO MADE IN ARLINGTON, HAS HAD SEVERAL ISSUES WITH THE SAME REAR PASS DOOR, DOOR LATCH, WINDOW SEALS AND WARPED DOOR FRAME. AFTER MULTIPLE TRIPS TO DEALER THE PROBLEM STILL EXISTS. BOTH AUTO RUNNING BOARD MOTORS HAVE NEEDED REPLACING AND PARTS HAVE BEEN CHANGED OUT SEVERAL TIMES. AFTER A FEW THOUSAND MILES ALL 8 LIFTERS IN THE ENGINE NEEDED REPLACING AND NOW THE TRUCK IS SLUGGISH AND "OUT OF SYNC". THE AIR CONDITIONER WENT OUT AFTER A FEW HUNDRED MILES AND REQUIRED AN ENTIRE NEW HVAC SYSTEM, NEW HOSES, MOUNTS, VENTS ETC. THE FRONT PASS LEATHER SEAT NEEDED REPLACEMENT BECAUSE OF POOR QUALITY. THE PAINT IN SEVERAL AREAS HAS FLAKED AND HAS BEEN TO THE BODY SHOP THREE X'S FOR PAINT REPAIR. GM HAS BEEN FORCED TO TAKE IT BACK UNDER THE...