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Jerry, Master Mechanic
Category: Pontiac
Satisfied Customers: 16725
Experience:  ASE Master tech. 30+ years mechanic, shop forman, service manager
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2006 Pontiac G6: V6..the front end - drivers side..suspension

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I have a 2006 Pontiac G6, V6 4dr. A week after I bought it, it developed a rattle that seems to be coming from the front end - drivers side, no farther back than the drivers seat, but seems more forward. Not sure if it is the suspension, or just a loose shield or brake cable, etc. I can actually feel it when at its worst, and it is more noticable when at lower speeds, such as when I hit choppy pavement in a parking lot, for example. It also seems worse when the weather is colder, and having the window open reveals no additional noise.
I have been to more than one dealer, and they cannot find anything, despite acknowledging the noise. Just recently, the rattle seemed to worsen, but it may just be that the weather has turned cooler again.
I travel a lot for work and often rent cars. I have rented 4-5 G6's, and have never noticied this in any of them, so it would not seem to be normal. I have driven a lot of cars and have never experienced this before.

Hello and welcome to Just, Super mechanic here. About your vehicle.



There has been a service bulletin for that type of concern. Here is what it states.



Steering - Front End Clunk/Rattle/Knock On Bumps


Bulletin No.: 06-02-32-007E

Date: March 09, 2009

Clunk, Knock or Rattle Noise From Front of Vehicle While Driving or Turning Over Bumps at Low Speeds (Diagnose Noise and Perform Outlined Repair)


2004-2006 Chevrolet Malibu Maxx
2004-2008 Chevrolet Malibu Classic
2008-2009 Chevrolet Malibu
2005-2009 Pontiac G6
2007-2009 Saturn Aura



This bulletin is being revised to update the models to 2009 and to update Cause # XXXXX Please discard Corporate Bulletin Number 06-02-32-007D (Section 02 - Steering).

Condition 1

Some customers may comment on a clunk noise heard and felt in the steering wheel while driving at slow speeds and turning. The clunk noise may appear to be directly in front of the driver. Hitting a bump while turning can produce the clunk noise. Sometimes the noise may be duplicated when the vehicle is sitting still and the steering wheel is turned 90 degrees in either direction before initially centering the steering wheel.

Cause 1

The clunk noise may be caused by a slip/stick condition between the inner and outer components of the intermediate shaft.

Revised design intermediate shafts went into production in the 2009 model year and are the only design currently available through GMSPO since approximately September 2008. Since any model year vehicle could have had a second design shaft installed, it is critical to identify it before proceeding. The revised design intermediate shafts will NOT tolerate any type of lubricant per the following instructions. Adding lube to the second design shafts will cause a clunk noise in a very short period of time. Use the following pictures to identify which design of shaft you are servicing.








Hydraulic Assist Power Steering

In the unlikely event that the source of the noise is identified as a second design shaft with black painted tube, it must be replaced.

Correction 1 (Only for First Design - DO NOT USE FOR 2ND DESIGN)

Lubricate the intermediate shaft with steering column shaft lubrication kit, P/N 26098237.

1. From inside the vehicle, remove the instrument panel insulator panel left side panel to gain access to the intermediate shaft.

2. Remove the intermediate shaft to steering column attachment bolt.

3. Remove the intermediate shaft from the steering column.







4. Extend the intermediate shaft all the way. Using the intermediate shaft grease kit, P/N 26098237, inject the grease into the gap between the inner shaft and the outer shaft as you are collapsing the shaft. This will draw the grease into the shaft.

5. Cycle the shaft up and down several times to distribute the grease.

Remove original thread locker material from the bolt and apply Loctite(R) 242 (or equivalent) to the threads of the bolt and reinstall intermediate shaft bolt.


6. Install the intermediate shaft to the column.


^For electronic power steering, tighten the bolt to 49 Nm (36 lb ft).


^For hydraulic power steering, tighten the bolt to 62 Nm (46 lb ft).


7. Wipe off any excessive grease on the intermediate shaft to avoid damage from drips on the carpet.

8. Install the instrument panel insulator panel left side.

9. Verify that the noise is no longer present.

Condition 2

There may be interference between the clamp and the steering gear input shaft. The clamp is beveled and if forced down on the input shaft too hard, it may cause a loose fit with the intermediate shaft to input shaft joint.

Correction 2

To correct this condition, perform the following steps:

1. Loosen the intermediate shaft pinch bolt at the steering gear end.







2. Pry the clamp up using a pry bar to position the bolt into the upper part of the groove as shown above. This will position the clamp off the bevel.

3. While keeping the clamp in the upper position, tighten the bolt.

Apply blue LOCTITE medium-strength threadlocker 242(TM)


Tighten the bolt to 49 Nm (36 lb ft).

4. Verify that the clunk noise is no longer present.

Condition 3

This condition ONLY applies to 2004-2007 Chevrolet Malibu/Maxx and 2005-2007 Pontiac G6.


Some customers may comment on a knocking or rattling type noise from the front of the vehicle when driven at low speeds and over bumps. The noise only occurs when the steering wheel is in the straight ahead position and sounds like the noise is in the left suspension of the vehicle or directly in front of the driver.

Correction 3

1. Ensure the noise is not caused by Condition # XXXXX

2. Determine the source of the noise. Install the chassis ears at the following locations:

^sway bar link - one side at a time


^upper strut mount - one side at a time


^steering gear near the pinion area


^base of the steering column housing


^Radiator surge tank


3. If the noise is coming from the upper strut mount or sway bar link, replace as necessary and retest.

4. For 2004-2006 Chevrolet and Pontiac model year vehicles, the noise may be coming from the radiator surge tank area. (The 2007 model year vehicles use a different style radiator surge tank refer to Step 9.)

5. If the noise is coming from the radiator surge tank, release the two retaining tabs holding the radiator surge tank and reposition the tank away from the attaching bracket and isolate with closed cell foam.

6. Cut three pieces of closed cell foam, P/N P46515 (or equivalent), into 25 mm (1 in) by 102 mm (4 in) pieces.







7. Cut two pieces of closed cell foam into 25 mm (1 in) by 6 mm (1/4 in) pieces.

8. Install the three pieces of foam to the attaching bracket starting at the top center inside the bracket and proceed down across the fuel lines, then at the inside of the bracket at the left and right positions of the center piece of foam. Finally, install the last two pieces of foam to the inside bracket at the left and right extended sides behind the retaining holes as shown above.

9. Reposition the radiator surge tank back onto the bracket and seat the two retaining tabs on the tank.

10. Drive the vehicle to verify that the noise is no longer present.


Jerry, Master Mechanic
Category: Pontiac
Satisfied Customers: 16725
Experience: ASE Master tech. 30+ years mechanic, shop forman, service manager
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