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Home >> Chevrolet >> 2007 >> Chevy Express G2500, Van Cargo, 6.6 6 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (Engine Control System & Fuel System - 6.6L (LLY) - Troubleshooting & Diagnosis) >> Charge Air Cooler Diagnosis (Charge Air Cooler Air Leak Test) >> Diagnostic Instructions >> Charge Air Cooler Outlet Connection (Engine Air Intake COLD Side)

Charge Air Cooler Outlet Connection (Engine Air Intake COLD Side)

WARNING: This page is about a different variant/trim than selected.
IMPORTANT: It is not necessary to remove the charge air cooler from the vehicle to perform this test.
    Fig 1: Identifying charge air cooler (CAC) clamp
    GM1716327Courtesy of GENERAL MOTORS CORP.
  1. Loosen the charge air cooler (CAC) clamp (1) that fastens the right air cooler duct to the intake air heater (2).
    2. IMPORTANT: After removing the charge air cooler duct, cover the intake heater opening with tape in order to prevent entry of objects.
  2. Remove the right charge air cooler duct (3) from the intake air heater inlet.
  3. Install the J 46091-10 pressure adapter to the charge air duct.
  4. Use the clamp to secure the adapter to the charge air duct.

    Tighten:  Tighten the clamp to 8 N.m (70 lb in).

    5. CAUTION: To prevent possible injury from the coupler blowing off the charge air cooler hose during the test, connect the safety cable before applying air pressure.
  5. Secure the safety cable.
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