Cruise Control - Revised Diagnostics
Bulletin No.: 03-08-68-001Date: May 09, 2003
SERVICE MANUAL UPDATE
Subject:
Revised Cruise Control Inoperative/Malfunctioning Diagnostic Information
Models:
2001-2002 Chevrolet Blazer, S-10
This bulletin is being issued to revise the Cruise Control Inoperative/Malfunction diagnostic information in the Cruise Control sub-section of the Service Manual. Please replace the current information in the Service Manual with the following information.
The following information has been updated within SI. If you are using a paper version of this Service Manual, please make a reference to this bulletin on the affected page.
2001 Model Year
Diagnostic Aids
To avoid misdiagnosis, inspect for the following:
^ Proper adjustment of the cruise control cable. Refer to Cruise Control Cable Adjustment.
^ Proper operation of brake lamps. Refer to Exterior Lighting Systems Description and Operation in Lighting Systems.
^ Proper operation of the clutch system, if equipped with a manual transmission. Refer to Hydraulic Clutch Description in Clutch.
^ The throttle linkage is not binding.
^ The vehicle speed is greater than 40 km/h (25 mph).
^ The system voltage is within 9-16 volts.
Electromagnetic interference on the vehicle speed sensor signal circuit may cause erratic cruise control operation.
2002 Model Year
Diagnostic Aids
To avoid misdiagnosis, inspect for the following:
^ Proper operation of brake lamps. Refer to Exterior Lighting Systems in Lighting Systems.
^ Proper operation of the clutch system, if equipped with a manual transmission. Refer to Hydraulic Clutch System Description and Operation in Clutch.
^ The throttle linkage is not binding.
^ The vehicle speed is greater than 40 km/h (25 mph).
^ The system voltage is within 9-16 volts.
Electromagnetic interference on the vehicle speed sensor signal circuit may cause erratic cruise control operation.
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