OEM 2004 Buick LeSabre ABS Control Module

2004 Buick LeSabre ABS Control Module Parts and Q&A

• Q: How to replace the ABS Control Module on 2004 Buick LeSabre?

  A: First turn off the ignition power then raise the vehicle to perform abs control module (ABSCM) replacement work. First remove the left front wheel and left front fascia extension while cleaning all contaminants away from the abscm installation area. Wash the abscm area thoroughly before rotating the connector tab for unlocking position and taking off the abscm position assurance from its electrical connector. The wiring harness connection requires an off ignition because the system will experience damage otherwise. Disconnect the abscm electrical connector from the abscm then take the brake pressure modulator valve (bpmv) electrical connector from the abscm. The abscm/bpmv assembly requires cleaning of its surface prior to replacement after the removal of its 6 abscm to bpmv screws because an injured abscm will need replacing. Disengage both the abscm unit from the bpmv assembly. Installation begins with cleaning the bpmv surface after which the abscm should be positioned onto the bpmv while applying torque of 3.2 N.m (28 lb in) to the 6 screws. The bpmv electrical connector should connect to the abscm while the abscm electrical connector should match up to the abscm. Then secure the connector position assurance to the abscm electrical connector. After locking the abscm connector tab downward you can reinstall both the left front fascia extension and left front wheel. Lower the vehicle. An unprogrammed abscm may result in drp/abs/tim/vses/tim/ves (if equipped) malfunctions along with triggering dtc c1248 abscm turned on the red brake warning indicator and dtc c1255m3 abscm internal malfunction. The abscm replacement requires programming with the vehicle-specific software and dtc clearing through the scan tool as a prerequisite for abs diagnostic system check execution.