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Home >> Chevrolet >> 2007 >> Express 2500 V8-4.8L >> Repair and Diagnosis >> Cruise Control >> Testing and Inspection >> Symptom Related Diagnostic Procedures >> Cruise Control Inoperative/Malfunctioning (Without Throttle Actuator Control)
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Cruise Control Inoperative/Malfunctioning (Without Throttle Actuator Control)



Cruise Control Inoperative/Malfunctioning (Without Throttle Actuator Control)

Diagnostic Aids

To avoid a misdiagnosis, inspect for the following:

* Proper operation of the stop lamps-Refer to Exterior Lighting Systems Description and Operation.
* Proper adjustment of the cruise control cable-Refer to Cruise Control Cable Adjustment.
* The throttle linkage is not binding.

Electromagnetic interference on the speed sensor signal circuit may cause erratic cruise control operation.

For an intermittent condition, refer to Testing for Intermittent Conditions and Poor Connections in Diagnostic Aids. Component Tests and General Diagnostics

Conditions for Enabling Cruise Control

* The vehicle speed is greater than 40 km/h (25 mph).
* The vehicle is not in PARK, REVERSE, NEUTRAL, or 1st gear.
* The system voltage is within 9-16 volts.

Test

Step 1 - Step 10:




Step 11 - Step 21:




Step 22 - Step 33:




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