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GMC Savana 3500 Exhaust Muffler Replacement Cost

The average cost for a GMC Savana 3500 Exhaust Muffler Replacement is between $686 and $974. Labor costs are estimated between $70 and $89 while parts are priced between $616 and $885. Estimate does not include taxes and fees.

How Much Does an Exhaust Muffler Replacement Cost?

Exhaust Muffler Replacement Service and Cost

36065 original
What is a muffler?

The muffler is the last step for exhaust gas on the way out of the exhaust system. They keep the engine running quietly, and allows combustion gasses to leave the exhaust pipe.

How does the muffler work?

The muffler uses several sound deadening chambers that absorb vibrations as the exhaust gas passes through this forced maze. After passing through multiple chambers and baffles, the exhaust noise is quieted down to the designed level.

Can I drive with a muffler problem?

Driving a vehicle with a hole in the muffler will generally not cause any harm. The engine will not record any data concerning the muffler, because the oxygen sensor is located before the resonator and muffler. If the muffler is clogged, the vehicle will most likely not be able to start, or stay running.

How often do mufflers need to be replaced?

The number one cause of muffler failure is corrosion from road salt or other debris. Collisions can also damage mufflers when the vehicle is rear ended. There is no recommended replacement interval for mufflers, and they often last the life of the vehicle.

Exhaust Muffler Replacement Repair Information

How are muffler issues diagnosed?

Diagnosis of a muffler issue is typically visual in nature. The condition of the muffler, exhaust pipe, and hangars will be inspected, and any corrosion or excessive wear will necessitate replacement. Furthermore, if the engine will not start, and no air comes from the exhaust pipe, the muffler may be disconnected to locate the clog. If the muffler is clogged, it will be replaced.

How is a muffler replaced?

Replacement varies with vehicle type. Many factory mufflers only require the rear most section to be unbolted and replaced with new. Because of the location, usage of penetrating chemicals and heat may be required to free the corrosion on the fasteners. If installing an aftermarket muffler with different flanges, cutting and welding of the original exhaust pipe may be necessary to fit the new one.

RepairPal Recommendations for muffler issues

While the muffler is off for replacement, consider replacing the rubber hangers or "donuts". If these are worn or missing, the muffler will move around unrestricted and cause the junctions to fail even on quality replacements.

What to look out for when dealing with muffler issues

With exception to some high-end aftermarket performance systems, the OEM muffler is usually the best one for your vehicle. Having a shop weld on an off the shelf muffler will be cheaper in the short run, but may fail more often depending on the quality of the aftermarket muffler, and the quality of the shop's welding ability.

Can I replace the muffler myself?

Replacing a muffler is only a DIY capable project if the existing muffler and replacement muffler can be changed without welding. If welding is required, a professional exhaust welder should complete the repair.

Most Common GMC Savana 3500 Repairs

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