Tools Required

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J 33049 Camshaft Bearing Service Set. See Special Tools .

Fig 1: View Of Camshaft Bearings

Courtesy of GENERAL MOTORS CORP.

IMPORTANT: A loose camshaft bearing may be caused by an enlarged, out of round, or damaged engine block bearing bore.

Prior to bearing removal, inspect the camshaft bearings for loose fit in the engine block bearing bores. Refer to Camshaft and Bearings Cleaning and Inspection (RPO LY2/LC9/LY5/LMG) or Camshaft and Bearings Cleaning and Inspection (RPO LY6/L76/L92) .
Repair or replace the components, as required.

Fig 2: View Of J 33049 Camshaft Bearing Service Kit Components

Courtesy of GENERAL MOTORS CORP.

Select the expanding driver (4-8) and washer (2 or 3) from the J 33049 . See Special Tools .
Assemble the tool.
Insert the tool through the front of the engine block and into the bearing.
Tighten the expander assembly (15) nut until snug.
Push the guide cone (1) into the front camshaft bearing in order to align the tool.

Fig 3: Driving Bearing Out Of Or Into Engine Block

Courtesy of GENERAL MOTORS CORP.

Drive the bearing from the block bore.

IMPORTANT: In order to remove the front camshaft bearing, operate the tool from the rear of the block, using the guide cone in the rear camshaft bearing bore.

Repeat the above procedures in order to remove the remaining bearings.