2010 Buick LaCrosse
Mileage
86,329
Service Date
7/30/2026
Services Performed
- ELECTRONIC CONTROL MODULE – Remove & Replace – ECM –
- Scanned for codes and found:P069E FUEL PUMP CONTROL MODULE REQUESTED MIL P023F(FPCM) FUEL PUMP CONTROL CIRCUIT P0700 TRANSMISSION CONTROL MODULE REQUESTED MIL U0100(TCM) LOST COMMUNICATION WITH ECM ALL LIVE DATA CURRENTLY IN SPEC. TEST DROVE VEHICLE SET ALL MONITORS AFTER 30 MILES WITH NO ISSUE. DROVE VEHICLE ADDITIONAL 27 MILES. AT MILE 57 VEHICLE STALLED. RETURNED TO SHOP AFTER RESTARTING. NO CODES FOUND EXCEPT NO COMMUNICATION CODE U1000 IN SEVERAL MODULES. MEASURED RESISTANCE BETWEEN PINS 6/14 AT OBD CONNECTOR. FOUND 61 OHMS VERIFYING WIRING GOOD. VERIFIED 3 POWER INPUTS ON X3 CONNECTOR AT PINS 73/67/62 PNK/BLK WIRES AND 2 GOOD GROUNDS AT PIN 73 ON X2/X3 CONNECTORS. CUSTOMER MENTIONED OF HEARING CLICKING FROM RELAYS. SWAPPED REAR DEFROSTER RELAY OVER TO PCM RELAY POSITION(SAME RELAYS). TEST DROVE VEHICLE SEVERAL MILES AFTER SWAPPING RELAY. ENGINE LIGHT AND TRACTION LIGHT FLASHED ON AND OFF 3 TIMES DURING TEST DRIVE. RECOMMEND REPLACING ECM AND RECHECKING. TEST DROVE VEHICLE 86 MILES OVER COURSE OF 3 DAYS AFTER COMPUTER REPLACEMENT. NO STALLING. ALL MONITORS SET EXCEPT EVAP AND CAT.
- PROGRAMMING
- FUEL
Sean M. gave our service a 5 star review on 7/30/2026
