Hi,

Well, I fixed the headlight issue today by changing the headlight / blinker arm as per the instructions on this site.

Now, it did fix the headlights but the cruise still does not work and the blinkers have an intermittent problem as they work then they don't....Any ideas?

Thanks,
Jim

 

Hi,

Searched the forum again and found I need to change the hazard switch as that will fix the blinkers. I guess I'll take the dash apart again tomorrow.

I have searched high and low regarding the crusie control with no luck. Here is more detail about what is happening:

When I turn the cruise on nothing happens, no light comes on indicating the crusie or anything. Checked the codes and have no issues related to the crusie control. Also, I changed the blinker / headlight arm yesterday to solve the headlight issue so I know that the switch is good. The car does not have the tire sensors installed so it does always show service tire system on the dash. Don't know if this could be the reason or not.

Could it be a fuse?
Grounding issue?
or?

Thanks again for the help as this forum has already saved me several times

 

You may want to check the stop lamp or clutch pedal position switchs and see if one of them is deactivating the cruise control. Here are some relative schematics.

FIGURE Cruise Control Switch, Throttle Actuator Control Motor and Cruise Control Release Switch(c)


IGURE Power, Ground and Stoplamp Switch(c)



Here is the diagnostic for cruise problems:
Cruise Control Inoperative/Malfunctioning

Diagnostic Aids
Perform the following in order to avoid a misdiagnosis:
• Inspect for proper operation of the brake lamps. Refer to Exterior Lighting Systems Description and Operation in Lighting Systems.
• Inspect for proper operation of the clutch, if equipped with a manual transmission. Refer to Clutch System Description and Operation in Clutch.
• Electro magnetic interference (EMI) on the vehicle speed sensor signal circuit may cause erratic cruise control operation.
For an intermittent condition, refer to Testing for Intermittent 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 within 12 volts and 16 volts.

Test description
The numbers below refer to the step numbers on the diagnostic table.
Step 7. This step tests the cruise control set/coast switch signal circuit for an open or for a high resistance.
Step 8. This step tests the cruise control resume/accel switch signal circuit for an open or for a high resistance.
Step 9. This step tests the ignition 1 voltage circuit for an open, for a short to ground, or for a high resistance.
Step 26. DTCs will set in the PCM when you perform this table.
Step Action Yes No
Schematic Reference : Cruise Control Schematics
Connector End View Reference: Cruise Control Connector End Views , or Powertrain Control Module (PCM) Connector End Views in Engine Controls-5.7L, or Throttle Actuator Control (TAC) Module Connector End Views in Engine Controls-5.7L

Step 1 Did you perform the Cruise Control Diagnostic System Check? Go to Step 2
Go to Diagnostic System Check - Cruise Control

Step 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 On/Off Switch parameter in the powertrain control module (PCM) Cruise Control Data data list.
Does the Cruise On/Off Switch parameter display Off? Go to Step 4
Go to Step 3

Step 3
1. Turn the ignition OFF.
2. Disconnect the cruise control switch.
3. Turn the ignition ON, with the engine OFF.
4. With the scan tool, observe the Cruise On/Off Switch parameter.
Does the Cruise On/Off Switch parameter display Off? Go to Step 20
Go to Step 11

Step 4
1. Turn the cruise control On/Off switch ON.
2. With the scan tool, observe the Cruise On/Off Switch parameter.
Does the Cruise On/Off Switch parameter display On? Go to Step 5
Go to Step 9

Step 5
1. With the scan tool, observe the Cruise Set/Coast Switch parameter in the PCM Cruise Control Data data list.
2. Turn the cruise control On/Off switch On.
3. Press and hold the cruise control Set/Coast button.
Does the Cruise Set/Coast Switch parameter Display On? Go to Step 6
Go to Step 7

Step 6
1. With the scan tool, observe the Cruise Resume/Accel. Switch parameter in the PCM Cruise Control Data data list.
2. Press and hold the Resume/Accel switch.
Does the Cruise Resume/Accel. Switch parameter Display On? Go to Diagnostic Aids Go to Step 8

Step 7
1. Turn the ignition OFF.
2. Disconnect the cruise control switch.
3. Turn the ignition ON, with the engine OFF.
4. Connect a 3 ampere fused jumper between the cruise control set/coast switch signal circuit and the ignition 1 voltage circuit.
5. With the scan tool, observe the Cruise Set/Coast Switch parameter.
Does the Cruise Set/Coast Switch parameter Display On? Go to Step 20
Go to Step 17

Step 8
1. Turn the ignition OFF.
2. Disconnect the cruise control switch.
3. Turn the ignition ON, with the engine OFF.
4. Connect a 3 ampere fused jumper between the cruise control resume/accel switch signal circuit and the ignition 3 voltage circuit.
5. With the scan tool, observe the Cruise Resume/Accel. Switch parameter.
Does the Cruise Resume/Accel. Switch parameter Display On? Go to Step 20
Go to Step 18

Step 9
1. Turn the ignition OFF.
2. Disconnect the cruise control 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 10
Go to Step 13

Step 10
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 On/Off Switch parameter.
Does the Cruise On/Off Switch parameter display On? Go to Step 20
Go to Step 16

Step 11 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 12

Step 12
1. Turn the ignition OFF.
2. Disconnect C1 of the TAC module.
3. Turn the ignition ON, with the engine OFF.
4. With the scan tool, observe the Cruise On/Off Switch parameter.
Does the Cruise On/Off Switch parameter display On? Go to Step 22
Go to Step 21

Step 13
Test the cruise control set/coast switch signal circuit for a short to ground. 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 14

Step 14 Test the cruise control resume/accel switch signal circuit for a short to ground. 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 15

Step 15 Test the cruise control on switch signal circuit for a short to ground. 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 19

Step 16 Test the cruise control on switch signal circuit 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 21

Step 17 Test the cruise control set/coast switch signal circuit 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 21

Step 18 Test the cruise control resume/accel switch signal circuit 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 21

Step 19 Repair the open, the high resistance, or the short to ground in the Ignition 1 voltage circuit. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.
Did you complete the repair? Go to Step 26
--
Step 20 Inspect for poor connections at the harness connector of the cruise control switch. Refer to Testing for Intermittent and Poor Connections and to Connector Repairs in Wiring Systems.
Did you find and correct the condition? Go to Step 26
Go to Step 23

Step 21 Inspect for poor connections at the harness connector of the TAC module. Refer to Testing for Intermittent 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

Step 22 Inspect for poor connections at the harness connector of the PCM. Refer to Testing for Intermittent 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

Step 23 Replace the cruise control switch. Refer to Multifunction, Turn Signal Switch Replacement in Steering Wheel and Column.
Did you complete the replacement? Go to Step 26
--
Step 24 Replace the TAC module. Refer to Throttle Actuator Control (TAC) Module Replacement in Engine Controls-5.7L.
Did you complete the replacement? Go to Step 26
--
Step 25 Important
Program the replacement PCM.
Replace the PCM. Refer to Powertrain Control Module (PCM) Replacement in Engine Controls-5.7L.
Did you complete the replacement? Go to Step 26
--
Step 26
1. Use the scan tool in order to clear the PCM DTCs.
2. Operate the vehicle within the conditions for cruise control operation.
Does the cruise control system operate properly? System OK Go to Step 2



Bill