OEM GMC Sierra 3500 Exhaust Hanger

GMC Sierra 3500 Exhaust Hanger Parts Questions & Experts Answers

• Muffler Insulator
  15092802
  Q: How to replace the Exhaust Hanger Mounting Bracket on 6.0L, 6.6L, and 8.1L engines on GMC Sierra 3500?

  A: The replacement of Exhaust Hanger mounting bracket for 6.0l, 6.6l, and 8.1l engines requires exhaust manifold pipe and Catalytic Converter removal first. Car owners should discard the hanger bracket bolts which anchor the Exhaust Pipe when the vehicle features a 4l60-e automatic transmission. Vehicle owners with the combination of 6.0l engine and 4l80-e automatic transmission need to take out the bolts securing the Exhaust Pipe hanger bracket. You must first eliminate the transmission bolts then follow with the Exhaust Pipe hanger bracket bolts in vehicles with 6.0l engine and 5-speed manual transmission. The Exhaust Pipe hanger bracket bolts must be taken out when working with 6.6l or 8.1l engines that have either an allison transmission or a 6-speed manual transmission. Yes you can reinstall the exhaust manifold pipe bracket after completion of the removal process. The installation of Exhaust Pipe hanger bracket bolts needs a torque setting of 12 nm (106 inch lbs.) for vehicles with 6.6l or 8.1l engine and 6-speed manual transmission. Place the Exhaust Pipe hanger bracket bolts on engines with an allison transmission and torque them to 12 nm (106 inch lbs.). The Exhaust Pipe hanger bracket bolts require a torque of 12 nm (106 inch lbs.) when installing on a 6.0l engine with 5-speed manual transmission; subsequent step involves tightening transmission bolts to 100 nm (74 ft. Lbs.). The Exhaust Pipe hanger bracket bolts need to be installed on 6.0l or 8.1l engine vehicles with a 4l80-e automatic transmission at 12 nm (106 inch lbs.). A 6.0l engine with a 4l80-e automatic transmission requires mounting the Exhaust Pipe hanger bracket bolts to 12 nm (106 inch lbs.), while a 6.0l engine with a 4l60-e automatic transmission needs bracket bolt tightening of 17 nm (13 ft. Lbs.). Before finishing the repair process attach the Catalytic Converter along with the exhaust manifold pipe.