| Subject: | Engine Oil Cooler Line Replacement | 
| Models: | 1996-97 Chevrolet and GMC T Pickup and Utility Models | 
 | 1996-97 Oldsmobile Bravada | 
 | with 4.3L V6 Engine (VIN W -- RPO L35) | 
 
This bulletin is being issued to inform dealers that when
replacing the engine oil cooler lines on the above listed vehicles, a modification
must be made to the radiator air inlet duct prior to installing the new engine
oil cooler lines. Trim a clearance area approximately 25 mm x 100 mm
(1 in x 4 in) from the air inlet duct where the engine oil cooler
line contacts the duct at the remote (frame mounted) oil filter adapter.