Top 10 2006 Pontiac Grand Prix Questions & Answers

well it could be a few things but most likely you belt is sliping. That is very common and happens to all cars over the years if the belt is not changed. You should check it out. The belt could be bad but it could also be a bad pully. If you dont know what these parts are look them up on google. its very simple

If alternator is good, it should stay running with cable off. What is your battery voltage with & without engine running?

2006 PONTIAC GRAND PRIX - V6 3.8L
Belt Routing Diagram - Multiple Accessory (Main Drive)



Hope helps (remember rated this) Good luck.

Follw this link, go to page #123, diagram #6-50. Good Luck. http://www.daycoproducts.com/daycoweb.nsf/cf652a4feb630ad0862571a4005ae40c/1120b6e8f406fd3e862574c000569a91/$FILE/SerpentineBeltRoutingGuide.pdf

Coolant Temperature Sensor I would take the vehicle back to where it was serviced and try to ask them about what may have gone wrong to cause this problem.
The Intake Air Temperature sensor should also be checked.

The following is the procedure for servicing the coolant temperature sensor: Removal & Installation 3.8L Engine To Remove:

1. Drain the coolant.
2. Disconnect the engine coolant temperature (ECT) sensor connector. ECT sensor 3.8L
   
   
3. Remove the ECT sensor.

1. Apply thread sealer P/N 12346004 or equivalent to the engine coolant temperature (ECT) sensor threads.
2. Install the ECT sensor. Tighten 18 ft-lb (25 Nm).
3. Connect the ECT sensor harness connector.
4. Fill the cooling system.

1. Drain the coolant below the level of the engine coolant temperature (ECT) sensor.
2. Disconnect the ECT sensor electrical connector. ECT sensor 5.3L
   
   
3. Remove the ECT sensor from the cylinder head.

1. Clean the threads in the sensor mounting hole.
2. Apply sealer P/N 13246004 or equivalent to the threads of the sensor.
3. Install the sensor and tighten 15 ft-lb (20 Nm).
4. Connect the ECT sensor electrical connector.
5. Fill the cooling system and check for leaks.

Are the 2 tubes that go to the heater core getting hot? If so, then the blend door is not opening to allow heat to get to the cabin.

Possible vacuum motor problem, either disconnected, or the controller for the blend door is broken is likely problem.

Troubleshooting by Symptom Poor Heater System Performance CAUTION
Check all fluid levels and adjust as needed, before operating vehicle for extended periods at idle.

1. Start the engine.
2. Idle the engine until the thermostat opens (upper radiator hose will be hot) Is the engine at normal operating temperature (approx. 200° F)? If yes, go to the next step. If no, go to step 16.
3. Set the mode selector to FLOOR mode.
4. Set the heater control selector to the warmest temperature setting.
5. Set the blower speed the lowest setting.
6. Carefully feel the inlet and outlet heater hoses at the heater core. Is the inlet heater hose significantly hotter than the outlet heater hose? If yes, go to step 14. If no, go to the next step.
7. Set the mode selector to PANEL mode.
8. Select the maximum blower speed.
9. Select the warmest temperature setting.
10. Place a thermometer into the center I/P PANEL air outlet and affix a second thermometer to the heater core outlet heater hose.
11. Record the temperature at the center I/P PANEL air outlet and at the heater core outlet heater hose. Are the two temperature readings about equal? If yes, go to the next step. If no, go to step 13.
12. Inspect and repair the cowl, cowl area, recirculation door, and the HVAC evaporator/heater core case for cold air leaks. Repair any problems found, go to step 17.
13. Inspect the temperature door operation. Repair any problems found, go to step 17.
14. Turn OFF the engine. Back-flush the heater core. Start the engine. Select the FLOOR mode and the lowest blower speed. Select the warmest temperature setting. Feel the temperature of the inlet and outlet heater hoses at the heater core. Is the inlet heater hose feel significantly hotter than the outlet heater hose? If yes, go to the next step. If no, go to step 17.
15. Replace the heater core. When the repair is completed, go to step 17.
16. Check for low engine temperature problems, Repair or replace as needed, go to step 17.
17. Operate the system in order to verify the repair. If the system operates properly, the repair is complete. If the heater still does not work properly, repeat the entire procedure.

1. Remove the right lower instrument panel (I/P) insulator.
2. Remove the glove box assembly. Recirculation actuator (Typical)
   
   
3. Remove the mounting screws and recirculation actuator from the HVAC module assembly.
4. Disconnect the recirculation actuator harness connector.

1. Align the recirculation actuator slots with the flats on the actuator door shaft.
2. Install and secure the recirculation actuator on the HVAC module assembly with the mounting screws.
3. Connect the recirculation actuator harness connector.
4. Install the glove box assembly.
5. Install the right lower I/P insulator.
6. Calibrate the recirculation actuator.

1. Remove the right lower instrument panel (I/P) insulator.
2. Remove the glove box assembly. Mode actuator
   
   
3. Remove the mounting screws and mode actuator from the HVAC module assembly.
4. Disconnect the mode actuator harness connector.

1. Align the mode actuator slots with the flats on the actuator door shaft.
2. Install and secure the mode actuator on the HVAC module assembly with the mounting screws.
3. Connect the mode actuator harness connector.
4. Install the glove box assembly.
5. Install the right lower I/P insulator.
6. Calibrate the mode actuator.

1. Remove the right lower instrument panel (I/P) insulator.
2. Remove the glove box assembly. Air temperature actuator (right side)
   
   
3. Remove the mounting screws and right air temperature actuator from the HVAC module assembly.
4. Disconnect the right air temperature actuator harness connector.

1. Align the right air temperature actuator slots with the flats on the actuator door shaft.
2. Install and secure the right air temperature actuator on the HVAC module assembly with the mounting screws.
3. Connect the right air temperature actuator harness connector.
4. Install the glove box assembly.
5. Install the right lower I/P insulator.
6. Calibrate the mode actuator.

1. Remove the left lower instrument panel (I/P) insulator. Air temperature actuator (left side)
   
   
2. Remove the mounting screws and left air temperature actuator from the HVAC module assembly.
3. Disconnect the left air temperature actuator harness connector.

1. Align the left air temperature actuator slots with the flats on the actuator door shaft.
2. Install and secure the left air temperature actuator on the HVAC module assembly with the mounting screws.
3. Connect the left air temperature actuator harness connector.
4. Install the left lower I/P insulator.
5. Calibrate the mode actuator.

This vehicle is equipped with PASS-Key III (Personalized Automotive Security System) theft-deterrent system; this is a passive theft-deterrent system. This means nothing special needs to be done to arm or disarm the system.

It works when the key is inserted or removed from the ignition. PASS-Key III uses a transponder in the ignition key that matches a decoder in the vehicle.

Disarming with the Remote Keyless Entry Transmitter:
The alarm system will disarm when the remote keyless entry transmitter is used to unlock the doors. The red light will go out to show that the system is disarmed.

Disarming with Your Key:
The alarm system will disarm when the key is used to unlock the doors. The red light will stop flashing when the system is disarmed. If you would like the key to disarm the alarm system, see "Personal Programming Mode Screens" under DIC Controls and Displays (Base Level DIC) on page 3-52 or DIC Controls and Displays (Uplevel DIC with Trip Computer) on page 3-60 for more information of your Owners Manual.

When trying to start the vehicle, if the engine does not start and the STARTING DISABLED DUE TO THEFT SYSTEM warning message on the Driver Information Center (DIC) comes on, the key may have a damaged transponder. Turn the ignition off and try again.

If the engine still does not start, and the key appears to be undamaged, try another ignition key. At this time, you may also want to check the fuse. See Fuses and Circuit Breakers on page 5-112. If the engine still does not start with the other key, the vehicle needs service. If the vehicle does start, the first key may be faulty. See your dealer who can service the PASS-Key® III to have a new key made.

Hope this helps.

usualy the drain pluggs are located ON or neer the bottom [1-2 inches] of the radiator it should be a butterfly looking plug you can usualy turn by hand maby a small pair of plyers will be needed. some cars its facing the engen or on the engen side some are on the outside or bumper side of radiator. you may need to lay on your back and shimmy under face up so you can clearly see. sometime they are more difficult to find some cars have a pan looking cover on the bottom of radiator you shouldent need to remove this just feel around over the top of pan for a butterfly or wingnut lookin plug. it may be in a ressesed hole. i would start looking on the side the lower hose is on and go from there. also you dont need to remove this plugg once you find it just loosen it and the fluid starts flowing out. have something ready to catch the fluid in and NEVER do this after the car has been driven. this fluid remains very hott a very long time the last thing you need is to have hot fluid falling on you and you cant move because your under the car. remember if green fluid come out green fluid goes back in. if orange fluid comes out orange fluid goes back in. REMEMBER [ RIGHT TO TIGHT ]- [LEFT TO LOOSEN.].

that is a dealer task

It is the multi-function switch. It is a very common issue I found one on Amazon for $45 plus $5.95 s&h. Search you tube for "06 grand prix multifunction switch replacement".

Step 1: Open drivers door, remove dash side panel(gets covered by door when door is closed) by placing plastic putty knife between it and the dash and pulling it away from dash,

Step 2: remove kick panel (panel that covers under dash and steering wheel) by removing the screw covered by the dash side panel and two more along bottom edge on each corner,

Step 3: remove the instrument cluster shroud/bezel by pulling out on bottom tabs on both sides of steering wheel column (tabs were exposed by removing kick panel).

Step 4: now for where the cussing ensues...if children are present send them away...

Step 5: now push in on the seam between the top and bottom of the steering column and at the same time pull them apart. Now use extreme cussing and fiddle with the column adjustments and flex and jiggle the covers until you can force them off using care not to break any of the switches or the steering column adjustment lever.

Step 6: disconnect all connectors,

Step 7: remove 2 size 25 torq screws...the bottom one requires a special tool/ bit and a 1/4inch ratcheting wrench or minimal swearing and a open ended wrench,

Step 8: replace switch.

installation is reverse of disassembly with the exception of step being moved to between step 6 and step 5.