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HOMESERVICE MANUALSGMC1999FORWARD CONTROL 5.7 R, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 687 (ENGINE EXHAUST SYSTEM)REPAIR INSTRUCTIONSEXHAUST HANGER MOUNTING BRACKET REPLACEMENTINSTALLATION PROCEDURE
1999 GMC Forward Control 5.7 R, Automatic

Installation Procedure

1999 GMC Forward Control 5.7 R, AutomaticSECTION Installation Procedure
WARNING: This page is about a different car, the 2003 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the exhaust muffler rear hanger bracket.
    NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  2. Install the inboard and the outboard rear bumper impact bar bolts.

    Tighten 

    Tighten the bolts to 25 N.m (18 lb ft).

    Fig 1: Installing Exhaust Muffler Rear Hanger Bracket
    G02080735Courtesy of GENERAL MOTORS CORP.
  3. Install the exhaust pipe rear hanger insulators to the exhaust muffler rear hanger bracket.
  4. Remove the support from the exhaust system.
  5. Inspect the exhaust system for underbody contact.
  6. Lower the vehicle.
    Fig 2: Installing Exhaust Pipe Rear Hanger Insulators To Exhaust Muffler Rear Hanger Bracket
    G02080736Courtesy of GENERAL MOTORS CORP.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.