Test Description

The numbers below refer to the step numbers on the diagnostic table.

3. This step makes sure that none of the DTC's listed are present which would affect cruise control operation.

4. This step places the cruise control module in a functional test mode to allow testing of the; Cruise control switch circuit, brake switch circuit, the vehicle speed sensor (VSS) circuit, PNP switch circuit (if equipped), and the cruise release switch circuit (if equipped)

14. This step checks the vehicle speed circuit (VSS).

Fig 1: Cruise Control Inoperative/Malfunctioning Diagnostic Specifications (1 Of 4)

Courtesy of GENERAL MOTORS CORP.

Fig 2: Cruise Control Inoperative/Malfunctioning Diagnostic Specifications (2 of 4)

Courtesy of GENERAL MOTORS CORP.

Fig 3: Cruise Control Inoperative/Malfunctioning Diagnostic Specifications (3 Of 4)

Courtesy of GENERAL MOTORS CORP.

Fig 4: Cruise Control Inoperative/Malfunctioning Diagnostic Specifications (4 Of 4)

Courtesy of GENERAL MOTORS CORP.