Camshaft Cover Removal - Left Side

Special Tools

• EN 46328:  Camshaft Holding Tool
• J 39946:  Crankshaft Socket - 4.0L and 4.6L

  For equivalent regional tools, refer to Special Tools

Fig 1: Left Intake & Exhaust Camshaft Sensors & Bolts
Courtesy of GENERAL MOTORS CORP.
1. Loosen the left camshaft position sensor bolts.
2. Remove the left camshaft position sensors.
Fig 2: Left Camshaft Cover Ground Strap & Bolts
Courtesy of GENERAL MOTORS CORP.
3. Remove the bolts connecting the left camshaft cover ground strap to the left cylinder head and to the left camshaft cover.
4. Remove the left camshaft cover ground strap.
Fig 3: Left Camshaft Cover & Bolts
Courtesy of GENERAL MOTORS CORP.
5. Loosen the left camshaft cover bolts.
6. Remove and discard the camshaft cover grommets and camshaft cover bolts if they are serviced with the grommet.
7. Remove the left camshaft cover.
8. Use the J 39946:  socket on the nose of the crankshaft in order to align and install the EN 46328:  tool on the rear of the left cylinder head camshafts.
Fig 4: Camshaft Holding Tool
Courtesy of GENERAL MOTORS CORP.
WARNING: The camshaft holding tools must be installed on the camshafts to prevent camshaft rotation. When performing service to the valve train and/or timing components, valve spring pressure can cause the camshafts to rotate unexpectedly and can cause personal injury.
9. Install the EN 46328:  tool on the left cylinder head camshafts.