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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 238 (Engine Exhaust System) >> Repair Instructions >> Exhaust Crossover Pipe Replacement (3.5L) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect the battery ground (negative) cable. Refer to BATTERY NEGATIVE CABLE DISCONNECT/CONNECT PROCEDURE in Engine Electrical.
  2. Remove the throttle body air inlet duct.
  3. Drain the coolant from the cooling system. Refer to DRAINING AND FILLING COOLING SYSTEM (STATIC FILL) in Engine Cooling.
  4. Disconnect the inlet radiator hose from the engine. Refer to RADIATOR HOSE REPLACEMENT - INLET in Engine Cooling.
  5. Remove the thermostat bypass pipe. Refer to THERMOSTAT BYPASS PIPES REPLACEMENT - LX9 (3.5L) in Engine Cooling.
    6. Fig 1: Locating Exhaust Crossover Heat Shield & Bolts
    GM54366Courtesy of GENERAL MOTORS CORP.
  6. Remove the exhaust crossover heat shield bolts.
  7. Remove the exhaust crossover heat shield.
    8. Fig 2: Identifying Exhaust Crossover Pipe Studs/Nuts
    GM54282Courtesy of GENERAL MOTORS CORP.
  8. Remove the exhaust crossover pipe studs/nuts.
  9. Remove the exhaust crossover pipe.
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