OEM 2007 Buick Rainier Engine Control Module

2007 Buick Rainier Parts Questions & Experts Answers

• Q: What does the service of the engine control module (ECM) typically involve on 2007 Buick Rainier?

  A: The service of powertrain control modules (PCM) requires the replacement of either the PCM unit or EEPROM electrically erasable programming through a memory read-only technique. A correct part inspection must be performed on the PCM prior to its replacement. The faulty PCM needs replacement and you should install the new service PCM. You should always switch off the ignition before handling control module connectors and disconnecting or reconnecting power because it protects internal components from breaking. Service personnel must avoid letting the PCM metal housing come near battery voltage and must not contact solder joints or pins to prevent electrostatic damage. Examine the connection point of the control module to remove dirt before checking that the gasket seals properly to avoid contaminant access. The replacement control module requires programming and engine oil remaining life monitoring so engineers can prevent default engines to 100 percent and subsequent 5,000 km (3,000 mi) oil change from the last service. A secure scan tool should be used before disconnecting the PCM harness connectors to retrieve the engine oil life and loosen the PCM harness connector bolts with the ignition OFF. The vehicle owner needs to remove the PCM retaining bolts with nuts then slide the PCM forward from the intake manifold studs before extracting the PCM from its position. To change the studs it is necessary to remove the PCM mounting studs from the intake manifold. During installation replace the mounting studs onto the intake manifold before tightening them to 6 N.m (53 lb in). Samsung the PCM to its mount position by setting it on the mounting studs then attach the retaining hardware and nut fasteners with a torque of 8 N.m (71 lb in). Attach the PCM harness connectors to their body sections while tightening retaining bolts to 8 N.m (71 lb in). The installation of any new PCM requires programming of the system.