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Home >> Chevrolet >> 2007 >> Express 2500 V8-6.6L DSL Turbo VIN 6 >> Repair and Diagnosis >> Cruise Control >> Testing and Inspection
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Cruise Control: Testing and Inspection



Cruise Control Inoperative/Malfunctioning (6.6L)

Diagnostic Aids

To avoid a misdiagnosis, inspect for the following:

* Proper operation of the stop lamps. Refer to Exterior Lighting Systems Description and Operation.
* The throttle linkage is not binding.

Electro magnetic interference (EMI) on the speed sensor signal circuit may cause erratic cruise control operation.

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 between 12 volts and 16 volts.

Test

Step 1 - Step 9:




Step 10 - Step 23:




Step 24 - Step 25:




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