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Cruise Control - Revised Diagnostics

Bulletin No.: 03-08-68-001

Date: 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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