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Home › Hummer › 2003 › H2 › Repair and Diagnosis › External Pages › Different car › Section 531 (Engine Cooling System) › Diagnostic Information and Procedures › Symptoms - Engine Cooling › Notes

Symptoms - Engine Cooling: Notes

WARNING: This page is about a different car, the 2003 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.

Important:  The following steps must be completed before using the symptom tables.

  1. Perform the DIAGNOSTIC SYSTEM CHECK - ENGINE COOLING  before using the Symptom Tables in order to verify that all of the following are true:
  2. There are no DTCs set.
  3. The control module(s) can communicate via the serial data link.
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