Cylinder Head Disassemble

WARNING: This page is about a different car, the 2002 GMC Yukon XL, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Tools Required

J 8062 Valve Spring Compressor-Head Off

CAUTION: Refer to SAFETY GLASSES CAUTION in Cautions and Notices.

CAUTION: Compressed valve springs have high tension against the valve spring compressor. Valve springs that are not properly compressed by or released from the valve spring compressor can be ejected from the valve spring compressor with intense force. Use care when compressing or releasing the valve spring with the valve spring compressor and when removing or installing the valve stem keys. Failing to use care may cause personal injury.

Important: Mark, sort, or organize components for return to their original locations.

Use J 8062 in order to compress the valve springs.

Fig 1: Compressing Valve Springs Using J 8062
Courtesy of GENERAL MOTORS CORP.
Remove the valve stem keys (1).
Release and remove J 8062.
Remove the cap (2).
Remove the valve spring (3).
Remove the positive valve stem seal (4) from the valve guide.
Remove the valve rotator (5).
Important: In order to prevent damage to the valve guide, small burrs on the valve tip and at the stem key groove that interfere with the valve removal can be lightly filed with a fine file or stone to facilitate valve removal.
Remove the valve (6).

Fig 2: Valve & Components
Courtesy of GENERAL MOTORS CORP.
Disconnect the engine coolant temperature (ECT) sensor from the bracket.
Remove the ECT sensor from the right cylinder head.
Remove the ECT sensor bracket and bolt.

Fig 3: ECT Sensor & Bracket
Courtesy of GENERAL MOTORS CORP.
Remove the cylinder head coolant hole plug from the left cylinder head.

Fig 4: Cylinder Head Coolant Hole Plug
Courtesy of GENERAL MOTORS CORP.