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Muffler Replacement (3.6L LY7)

Fig 1: Muffler
GM1705726Courtesy of GENERAL MOTORS CORP.
Muffler Replacement (3.6L LY7)

Callout Component Name
NOTE: Refer to Fastener Notice .
Fastener Tightening Specifications:  Refer to Fastener Tightening Specifications .Preliminary Procedure: Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
1 Retaining Nuts (Qty: 2).

Tighten:  Tighten to 45 N.m (33 lb ft).


Tip:  Use a utility jack to support the exhaust system.
2 Catalytic Convertor Gasket.
Tip:  DO NOT re-use the gasket, replace with NEW.
3 Front Insulator.
Tip:  If the insulator is found to be worn or damaged, replace the insulator.
4 Intermediate Insulator.
Tip:  If the insulator is found to be worn or damaged, replace the insulator.
5 Muffler/Exhaust System.
Tip: 
  • Remove the utility jack.
  • With the aid of an assistant, remove the muffler/exhaust.
6 Rear Insulator (Qty: 4).
Tip:  If the insulators is found to be worn or damaged, replace the insulator.
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