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HOMESERVICE MANUALSCHEVROLET2002IMPALA LSREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE MECHANICALMECHANICALENGINE MECHANICAL - 3.8L (UNIT REPAIR)REPAIR INSTRUCTIONSTIMING CHAIN & SPROCKETS - REMOVAL (L67)
2002 Chevrolet Impala LS

Timing Chain & Sprockets - Removal (L67)

2002 Chevrolet Impala LSSECTION Timing Chain & Sprockets - Removal (L67)
  1. Align the timing marks on the sprockets.
    Fig 1: Aligning Timing Marks On Sprockets
    G01807618Courtesy of GENERAL MOTORS CORP.
  2. Remove the timing chain dampener.
    Fig 2: Timing Chain Dampener
    G01807619Courtesy of GENERAL MOTORS CORP.
  3. Remove the camshaft sprocket bolt.
  4. Remove the camshaft sprocket.
  5. Remove the timing chain.
  6. Remove the crankshaft sprocket.
  7. Remove the crankshaft balancer key.
    Fig 3: Crankshaft Balancer
    G01807620Courtesy of GENERAL MOTORS CORP.
  8. Remove the balance shaft drive gear.
    Fig 4: Balance Shaft Drive Gear
    G01807621Courtesy of GENERAL MOTORS CORP.
RENDER: 1.0x

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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.