LEMON Manuals: Even more car manuals for everyone
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) >> Leak Test Fails

Leak Test Fails

WARNING: This page is about a different variant/trim than selected.

If the pressure drop is more than 34 kPa (5 psi) in 15 seconds, the leak test has failed. Perform the following procedure:

  1. Inspect for air leaks using a pump spray bottle to apply a soapy solution to the pipes/hoses, charge air cooler hose connections, and charge air cooler core. Observe for bubbles.
  2. Replace or tighten the affected component as necessary.
  3. Retest the CAC system. If no other leaks are found, assemble the vehicle and clear the DTC information with a scan tool.
scientia non olet · About LEMON Manuals