Diesel Air Intake Tube - Discontinued
Number: 83-I-81Section: VI
Date: June, 1983
Subject: 6.2L DIESEL AIR INTAKE TUBE - ALL "C-K" 10-30 TRUCKS WITH LH6 L.D. EMISSIONS 6.2L DIESEL AND LL4 H.D. 6.2L DIESEL
TO: ALL CHEVROLET DEALERS
The air intake tube (from grille to air cleaner) is no longer being installed at the assembly plants. Should, you encounter a vehicle that operates in an environment that will cause it to be driven through standing water more than eight (8) inches deep, driven through standing water at faster than five (5) mph, used in a snow plow operation, or off-road use where water or snow could enter the tube at the grille, the air intake tube should be removed. The tube increases the chance of water ingestion in the above application.