b4000 code 46 (where is pretensioner)
I would recommend getting a manual that details the procedure or having a shop do this work.
Safety Belt Pretensioners
As part of the supplemental restraint system (SRS), the safety belt buckles are equipped with pretensioners. The safety belt buckle pretensioners remove excess slack from the safety belt webbing. The pretensioners are activated by the restraints control module (RCM) when the module detects a crash event force exceeding a programmed limit.
WARNING: The belt and buckle assembly pretensioner is a pyrotechnic device. Always wear safety glasses when repairing an air bag equipped vehicle and when handling a belt and buckle assembly pretensioner.
WARNING: The belt and buckle assembly pretensioner is a pyrotechnic device. Never probe the connectors on the belt and buckle assembly pretensioners. Doing so could result in belt and buckle assembly pretensioner or air bag deployment and could result in personal injury.






