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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1494 (Engine Exhaust System) >> Repair Instructions >> Muffler Replacement (4.3L, 4.8L, and 5.3L Engines) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: In order to avoid being burned, do not service the exhaust system while it is still hot. Service the system when it is cool.
CAUTION: Refer to PROTECTIVE GOGGLES & GLOVE CAUTION in Cautions and Notices.
  1. Raise and suitably support the vehicle. Refer to LIFTING AND JACKING THE VEHICLE in General Information.
  2. Remove the exhaust muffler nuts.
    Fig 1: Removing Exhaust Muffler Nuts (4.3L, 4.8L & 5.3L)
    G02133621Courtesy of GENERAL MOTORS CORP.
  3. Apply lubricant to the exhaust insulators in order to aid in removal.
  4. Remove the muffler brackets from the insulators.
  5. Remove the exhaust muffler.
    Fig 2: Removing Exhaust Muffler (4.3L, 4.8L & 5.3L)
    G02133622Courtesy of GENERAL MOTORS CORP.
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