GROUP: Automatic TransmissionSUBGROUP: AdjustmentDATE: 3-31-67 SUBJECT: Thumping Noise MODELS: All Models Equipped With Borg-Warner 35 Transmission Some cases of a thumping noise from the transmission have been reported when shifting into ‘D’ or ‘D1’. If you should encounter this, the following action is recommended: Be sure that engine idling speed is correct and that the (more…)