Removal Procedure
- Refer to grille assembly. Refer to 
Grille Replacement 
in
Body Accessories.
 
- Remove the two nuts securing the two cooler lines to the oil cooler.
 
- For vehicles not equipped with the 4.3L
engine,  remove the four bolts securing the auxiliary oil cooler    to the
radiator support.
 
- For vehicles equipped with the 4.3L engine,
remove  the four bolts securing the auxiliary oil cooler    to the radiator
support.
 
Installation Procedure
Notice: Use the correct fastener in the correct location. Replacement fasteners
must be the correct part number for that application. Fasteners requiring
replacement or fasteners requiring the use of thread locking compound or sealant
are identified in the service procedure. Do not use paints, lubricants, or
corrosion inhibitors on fasteners or fastener joint surfaces unless specified.
These coatings affect fastener torque and joint clamping force and may damage
the fastener. Use the correct tightening sequence and specifications when
installing fasteners in order to avoid damage to parts and systems.
- For vehicles not equipped with the 4.3L engine, install the four bolts
securing the oil cooler      to the  radiator support.
 
Tighten
Tighten the bolts to 10 N·m (89 lb in).
- For vehicles equipped with the 4.3L engine,
install  the four bolts securing the oil cooler to the   radiator support.
 
Tighten
Tighten the bolts to 10 N·m (89 lb in).
- Reinstall the grille assembly. Refer to 
Grille Replacement 
in
Body and Accessories.
 
- Check the transmission fluid level and add as required.