GM Service Manual Online
For 1990-2009 cars only

Engine Block Valley Cover Removal L98, LS2


    Object Number: 1951064  Size: SH
  1. Remove the valley cover retaining bolts (1).
  2. Remove the valley cover (2).
  3. Important: The valley cover gasket (3) is a single use only component and must be replaced whenever the valley cover gasket (3) is removed from the engine.

  4. Remove the valley cover gasket (3).
  5. Discard the valley cover gasket (3).


    Object Number: 1951063  Size: SH
  6. Remove the oil pressure sensor (1) and washer (2), as required.

Engine Block Valley Cover Removal LS3


    Object Number: 1559856  Size: SH
  1. Remove the engine block valley cover bolts (506).
  2. Remove the valley cover (555) and gasket (556).

  3. Object Number: 1552536  Size: SH
  4. Remove the seals (537) from the cover.

  5. Object Number: 1408864  Size: SH
  6. Remove the engine oil pressure sensor (706) and seal (707), as required.