TrailBlazer 2WD V8-6.0L VIN H (2006)
Cruise Control: Symptom Related Diagnostic Procedures
A Symptoms - Cruise Control
SYMPTOMS
IMPORTANT: Perform the Diagnostic System Check - Vehicle, before using the symptom diagnostic table in order to verify that all of the following
are true:
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There are no DTCs set.
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The control modules can communicate via the serial data link. See: Powertrain Management/Computers and Control Systems/Testing and
Inspection/Diagnostic Trouble Code Tests and Associated Procedures
Review the system description and operation in order to familiarize yourself with the system functions. Refer to Cruise Control Description and
Operation (4.2L) Cruise Control Description and Operation (5.3L, 6.0L).
Visual/Physical Inspection
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Inspect for aftermarket devices which could affect the operation of the Cruise Control System.
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Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
Intermittent
Faulty electrical connections or wiring may be the cause of intermittent conditions.
Symptom List
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:
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Cruise Control Indicator Always On (4.2L) Cruise Control Indicator Always On (non 4.2L) See: Cruise Control Indicator Always On
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Cruise Control Indicator Inoperative (4.2L) Cruise Control Indicator Inoperative (non 4.2L) See: Cruise Control Indicator Inoperative
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Cruise Control Inoperative/Malfunctioning (4.2L) Cruise Control Inoperative/Malfunctioning (non 4.2L) See: Cruise Control
Inoperative/Malfunctioning
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