GM 15869375
Exhaust Pipe

A secure method to replace the intermediate pipe requires stable vehicle elevation alongside adjustable jack stand installation under both front and rear positions of the pipe. The next step requires workers to loosen exhaust Muffler band clamps (2, 5) before separating exhaust mufflers from the intermediate pipe. Open the Exhaust Pipe hanger lower nuts before unfastening both intermediate pipe-to-catalytic converter pipe nuts and the Exhaust Pipe seals . The jack stands should be dropped while removing the intermediate pipe. When using the original intermediate pipe during replacement ensure each tail pipe/Muffler band clip receives new alignment with marked positions followed by weld removal and placement of new clips according to marks. Clean the left and right Muffler contact areas to the intermediate pipe with brush wire until all residue is removed. Then apply small lubrication amounts to the intermediate pipes and both mufflers before the pipe installation. After setting the intermediate pipe on the jack stands you should raise it before performing the installation. Fit the Exhaust Pipe seal into place by connecting the intermediate pipe with exhaust mufflers then secure it with hand-tightened retaining nuts to achieve proper alignment. Use adjustable jack stands to secure the exhaust mufflers and install torque to 44 nm (32 lb ft), next install torque to 25 nm (18 lb ft) for intermediate pipe and catalytic converter pipe joints and lower the Exhaust Pipe hangers on 50 nm (37 lb ft) torque settings. Finally, lower the vehicle.