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OEM GMC Sierra 3500 Muffler
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41 Mufflers found
GMC Sierra 3500 Muffler
Part Number: 15798957$942.56 MSRP: $1402.65You Save: $460.09 (33%)Ships in 1-3 Business Days
GMC Sierra 3500 Muffler
Part Number: 15798961$1071.28 MSRP: $1595.91You Save: $524.63 (33%)Ships in 1-3 Business Days
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GMC Sierra 3500 Muffler
Our website offers an extensive catalog of genuine GMC Sierra 3500 Muffler at unbeatable prices. Every OEM GMC Sierra 3500 Muffler comes with a manufacturer's warranty, an easy return policy, and rapid delivery service. Don't miss out on this great opportunity!
GMC Sierra 3500 Muffler Parts Questions & Experts Answers
- Q: How to replace the muffler on 6.0L, 6.6L, and 8.1L engines on GMC Sierra 3500?A: To change Muffler on 6.0l, 6.6l and 8.1l engines, first lift and support the vehicle, including remove spare tire if necessary, and under the rear axle install adjustable jacks if necessary. In the case of an 8.6 or 9.5 inch ring gear, plug the rear axle vent hose and swivel clip from rear brake crossover pipe, and when it comes to the vehicle with a ring gear of 10.5 inch follow the same steps. If necessary, remove the lower bolts and nuts of the rear Shock Absorbers, and then relieve the rear axle by lowering it using the adjustable jack stands. For 6.0l or 8.1l, remove nuts of the exhaust Muffler nuts and loosen the Exhaust Pipe clamp while carefully holding the Muffler exhaust to prevent it from falling down on the jobsite. For the 6.6l engine, also remove nuts from the exhaust Muffler and support the Muffler. Remove the insulators in the frame hangers for 6.0l or 8.1l engines, slide the Muffler rearward out of the Catalytic Converter, and then take off the insulators from Muffler hangers. If needed, peel off the exhaust manifold pipe gasket and for the 6.6l engine, take out the insulators from the frame hangers while sliding the Muffler towards the rear to separate it from the exhaust Muffler pipe. Pull off the exhaust Muffler gasket if necessary, and for 6.0l or 8.1l engines, pull out the Oxygen Sensor if the Muffler itself is being replaced. If the band clamp is not being replaced along with the Muffler, then the band clamp needs to be replaced, marking its position on the intermediate Exhaust Pipe, grinding and weld to remove the weld, and install a new band clamp. In case of installation that had the Muffler changed on 6.0l or an 8.1l engine, the old Oxygen Sensor needs to be re-installed with anti-seize compound gm p/n 12377953 on its threads, which were to be tightened to 42 nm (31 ft. Lbs. ). For the 6.6l engine, attach insulator to Muffler hangers and lubricate it to make it easier to install. Replace the exhaust Muffler gasket with a new one, then slide the Muffler forward to attach it to the exhaust Muffler pipe, before fitting insulators to frame hanger. For 6.0l or 8.1l engine, install the insulators to the Muffler hangers, lubricating them as well. Replace the exhaust manifold pipe gasket and slide the Muffler to the front connecting it to the Catalytic Converter and replace its riding to the frame hangers. For the 6.6l engine, the nuts for the exhaust Muffler must be tightened to 40 nm (30 ft. Lbs.). For 6.0l and 8.1l engines, set the new band clamp on the intermediate Exhaust Pipe next to the old one marked with a band clamp bolt, where tightening the exhaust Muffler nuts is meant to be done in such a way that the band clamp bolt installed in such a way that it would not be placed below the Exhaust Pipe itself. Secure the Exhaust Pipe clamp bolt to 44 nm (33 ft lbs). If required, raise the rear axle with adjustable jack stands, install the rear shock absorbers lower, bolts and nuts inserting them into place as tight as it gets 95 nm (70 ft. Lbs.). For 10.5 inch ring gear vehicles, install the rear axle vent hose and attach the vent hose swivel clip to the rear brake crossover pipe. For those with an 8.6 or 9.5 inch ring gear, fit the rear axle vent hose in and hook up vent hose swivel clip. Finally, take off the adjustable jack stands and install the spare tire if must and also lower down the vehicle.
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