GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Saturn 🢒 2004 🢒 VUE - AWD 🢒 Accessories 🢒 Cruise Control 🢒 Cruise Control Inoperative/Malfunctioning

Diagnostic Aids

Caution: Refer to SIR Caution in the Preface section.

Disable the inflatable restraint steering wheel module when performing this diagnostic table. Refer to SIR Disabling and Enabling in SIR.

Perform the following in order to avoid misdiagnosis:

    • Inspect for proper operation of the stop lamps. Refer to Exterior Lighting Systems Description and Operation in Lighting Systems.
    • Inspect for proper operation of the clutch system, if equipped with manual transmission. Refer to Clutch System Description and Operation in Clutch.
    • Observe the cruise set/coast and cruise resume/accel parameters in the scan tool PCM General Info Inputs data list while rotating the steering wheel to both stops and pressing and holding the steering wheel control switches. This will eliminate the possibility of a internally open or shorted inflatable restraint steering wheel module coil.
        Rotate the steering wheel to both steering stops while separately activating each cruise control switch. With a scan tool, observe the associated cruise control switch parameter in the PCM General Info - Inputs data list. This will help eliminate the possibility of a internally open or shorted inflatable restraint steering wheel module coil.

EMI on the vehicle speed sensor signal circuit may cause erratic cruise control operation.

For an intermittent condition, refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

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.

Step

Action

Yes

No

Schematic Reference: Cruise Control Schematics

Connector End View Reference: Cruise Control Connector End Views , Engine Control Module Connector End Views in Engine Controls - 2.2L (L61) or to Powertrain Control Module Connector End Views in Engine Controls - 3.5L (L66)

1

Did you perform the Cruise Control Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Cruise Control

2
  1. Install a scan tool.
  2. Turn the ignition ON, with the engine OFF.
  3. Turn the cruise control on/off switch OFF.
  4. With the scan tool, observe the Cruise Switch parameter in the PCM General Info - Inputs data list.

Does the Cruise Switch parameter display Off?

Go to Step 3

Go to Step 11

3
  1. With the scan tool, observe the Cruise Switch parameter.
  2. Turn the cruise on/off switch ON.

Does the Cruise Switch parameter display On?

Go to Step 4

Go to Step 12

4
  1. With the scan tool, observe the Cruise Set/Coast parameter.
  2. Press and hold the set/coast switch.

Does the Cruise Set/Coast parameter display On?

Go to Step 5

Go to Step 14

5
  1. With the scan tool, observe the Cruise Resume/Accel parameter.
  2. Press and hold the resume/accel switch.

Does the Cruise Resume/Accel parameter display On?

Go to Step 6

Go to Step 15

6

With a scan tool, observe the Cruise Brake Switch parameter

Does the Cruise Brake Switch parameter display Released?

Go to Step 7

Go to Step 9

7
  1. With a scan tool, observe the Cruise Brake Switch parameter
  2. Press and hold the brake pedal.

Does the Cruise Brake Switch parameter display Applied?

Go to Diagnostic Aids

Go to Step 8

8
  1. Turn OFF the Ignition.
  2. Disconnect the cruise brake switch.
  3. Turn ON the ignition, with the engine OFF.
  4. With a scan tool, observe the Cruise Brake Switch parameter

Does the Cruise Brake Switch parameter display Applied?

Go to Step 23

Go to Step 18

9
  1. Turn OFF the Ignition.
  2. Disconnect the cruise brake switch.
  3. Turn ON the ignition, with the engine OFF.
  4. Connect a test lamp between the ignition 1 voltage circuit and a good ground.

Does the test lamp illuminate?

Go to Step 10

Go to Step 22

10
  1. Connect a 3-ampere fused jumper between the ignition 1 voltage circuit and the brake switch signal circuit.
  2. With the scan tool, observe the Cruise Brake Switch parameter.

Does the Cruise Brake Switch parameter display Released?

Go to Step 23

Go to Step 19

11
  1. Turn the ignition OFF.
  2. Disconnect the cruise switch.
  3. Turn the ignition ON, with the engine OFF.
  4. Observe the Cruise Switch parameter.

Does the Cruise Switch parameter display Off?

Go to Step 20

Go to Step 16

12
  1. Turn the ignition OFF.
  2. Disconnect the cruise switch.
  3. Turn the ignition ON, with the engine OFF.
  4. Connect a test lamp between the ignition 1 voltage circuit and a good ground.

Does the test lamp illuminate?

Go to Step 13

Go to Step 22

13
  1. Connect a 3-ampere fused jumper between the ignition 1 voltage circuit and the cruise control on switch signal circuit.
  2. With the scan tool, observe the Cruise Switch parameter.

Does the Cruise Switch parameter display On?

Go to Step 20

Go to Step 17

14

Test the cruise control set/coast switch signal circuit for a short to ground, for an open, or for a high resistance. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 26

Go to Step 20

15

Test the cruise control resume/accel switch signal circuit for a short to ground, for an open, or for a high resistance. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 26

Go to Step 20

16

Test the cruise control on switch signal circuit for a short to voltage. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 26

Go to Step 21

17

Test the cruise control on switch signal circuit for an open, for a short to ground, or for a high resistance. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 26

Go to Step 21

18

Test the cruise brake switch signal circuit for a short to voltage. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 26

Go to Step 21

19

Test the cruise brake switch signal circuit for an open, for a short to ground, or for a high resistance. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 26

Go to Step 21

20

Inspect for poor connections at the harness connector of the cruise control switch. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 26

Go to Step 24

21

Inspect for poor connections at the harness connector of the ECM/PCM. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 26

Go to Step 25

22

Repair the short to ground, the open, or the high resistance in the ignition 1 voltage circuit. Refer to Wiring Repairs Wiring Systems.

Did you complete the repair?

Go to Step 26

--

23

Replace the cruise brake switch. Refer to Cruise Control Release Switch Replacement .

Did you complete the replacement?

Go to Step 26

--

24

Replace the cruise control switch. Refer to Steering Wheel Control Switch Assembly Replacement in Steering Wheel and Column.

Did you complete the replacement?

Go to Step 26

--

25

Important: Program the replacement ECM/PCM.

Replace the ECM/PCM. Refer to:

    •  Engine Control Module Replacement in Engine Controls - 2.2L (L61).
    •  Powertrain Control Module Connector End Views in Engine Controls - 3.5L (L66).

Did you complete the replacement?

Go to Step 26

--

26
  1. Enable the inflatable restraint steering wheel module. Refer to SIR Disabling and Enabling in SIR.
  2. Operate the vehicle with in the conditions for cruise control operation.

Does the cruise control system operate properly?

System OK

Go to Step 2