PontiacBonnevilleClub.com

Well the good news is, I think I finally got the trunk leak fixed. It poured outside today and when I got home there wasn't a drop in the trunk.

The bad news is, on the way home it started raining inside the car! At first I thought it was just water I brought in on my umbrella, but then I noticed a couple drops from the ceiling accessory panel and I noticed the headliner was a little wet around its edge. Then I noticed it was wet on the front corner by the driver's pillar. I also felt the floor carpet and found it wet on the driver's side, dry on the passenger's side and dry in the back. I know all of this leads to the sunroof. It is not sealed properly, the stop is way out of adjustment and I can't seem to get it adjusted right, so this one is probably going to end up in the body shop to get it taken care of.

Unless you guys tell me that tearing out the headliner, accessory panel and sunroof are easy peasy.

This may help.

http://www.pontiacbonnevilleclub.com/fo ... =43&t=1688

Sunroof Window Height and Opening Fit Adjustment
Cycle the sunroof window from the full open to closed position.


Loosen the 4 adjusting screws (1).
There are 2 adjusting screws on each side of the sunroof window
Center the window front to rear in the opening.


Adjust the front of the sunroof window (2) from flush to 1 mm (0.04 in) (1) below the top surface of the roof panel (3). Tighten
Tighten the front sunroof window adjustment screws to 5 N·m (44 lb in).


Adjust the rear of the sunroof window (2) from flush to 1 mm (0.04 in) (1) above the top surface of the roof panel (3). Tighten
Tighten the rear sunroof window adjustment screws to 5 N·m (44 lb in).

Cycle the sunroof window through all of the positions.
Verify the sunroof window fore/aft adjustments.
Verify the front and rear height adjustment.
Readjust the sunroof window, if necessary.

I appreciate the instructions Andrew, and I will try to get it adjusted as specified, but I had tried once before and even if I get the rear of the sunroof glass as far up as the screws will allow, at full-close-stop it is still almost ¼" lower than the roofline. I actually have to open it to vent and then inch it back down to form the best seal possible, but it's obviously not close enough. Is there a stop sensor that may be out of adjustment? Also, could the weatherseal around it be old and shrunk too? Would that have a normal life of about 5 years?

Edited to add picture...you can see how, at full stop it's still low on the backside.

Mine did that and i found some info on this site that the sunroof drain holes could be stopped up!!! So i took a air hose and blow out all 4 corners... and it hasn't leaked since then!!!

That's not a bad idea, either. I'll try that too. Thanks.

If its off that much, I would suggest this:

Use the vent position to get the glass sitting how you would like it to sit. Then remove the sunroof motor, and by using the switch set it back to the normal closed position. Then reinstall the motor.

I feel your pain! My leak is from the door panels, again, after two visits and two fixes from the dealer, over the past 6 years.

vinnyg, the problem is the dealer probably isnt fixing it as well as you would.

try this, http://www.pontiacbonnevilleclub.com/fo ... 43&t=11470


I did it to mine, and that door hasn't leaked since.

i would side on the clogged drain tube. Sounds like water is coming in from one side only. pour water down the drain holes and see if it drains..
beware of using a air hose to blow air into your vent tube. It could (could) blow the end of the tube off the connector..
Try a piece of weed wacker line .8 or .08 (i cant remember exactly) and slide that down the tube. Sand down the end thats going in first to take off the rough edge.
I don't think the sun/Moon roof seal was designed to keep all water out.

I'll try all of the above...all good suggestions...and Skippy, great one about the weed-wacker line. I was trying to think of what would be small enough and flexible enough to run through the drain tube. Weed-wacker line sounds like just the thing.

harofreak00 wrote:If its off that much, I would suggest this:

Use the vent position to get the glass sitting how you would like it to sit. Then remove the sunroof motor, and by using the switch set it back to the normal closed position. Then reinstall the motor.

Andrew, thanks. Obviously, this is going to require removing the headliner, and at least the A pillar trim, correct? Sounds pretty involved. I've never done it, is this pretty easy, like, can I do it in an afternoon? Thx.

The motor is actually back behind the sunroof, so you would only need to drop the rear half of the headliner (requiring removal of the C-pillar, B-pillar, grab handles, etc). Honestly though, I'd remove the entire thing. When you are trying to diagnose, the last thing you want is to get frustrated by the headliner in your way (and possibly damaging it.) I can remove the headliner in about 20 minutes, but for a first timer it could take much longer (over an hour?)

This pic shows the sunroof motor.


Items needed to be removed:
- A pillars
- B pillars
- C pillars
- Sun Visors
- Grab Handles
- Several electrical connections

A pillars


B pillars


C pillars


Grab Handles - passenger front, and both rears - Make sure you put the screws somewhere that you don't lose them!


Sun Visors


There will be 2 other electrical disconnects, both on the rear of the headliner. Oh, and the rearview mirror connection too!


Now we need to get the actual headliner out of the car. Fold both front seats down all the way, and navigate the headliner out of the rear passenger door like this:


Here is the headliner out of the car, and here are all the pieces needed to be removed to get this far.

Awesome, thanks. Any special tools needed to remove this stuff? I've got standard tools (hand tools, english/metric sockets, allen wrenches, etc.) but I don't have any special trim removal tools. Although, I do have a vinyl siding removal tool.

I also have a mega sawzall if needed!

hmmm soudns like u got your tools covered, the sawzall will work great

Nothing too special.

Started the project last night. I've always loved taking things apart and putting them back together again, even as a child, but I never really thought about doing it to a car! But I was surprised to find how easy it was to disassemble the interior trim and headliner. I got all the pillar trim and the visors removed in about half an hour; didn't break a single clip. It got late so I decided to save the rest for today under better lighting. The front of the headliner is hanging down already. Just need to pull the rear grab handles and disconnect the various remaining connectors and I'll be ready to pull the headliner. Then I'll check the drain tubes for any obvious issues; I can already see that the tubes are flattened somewhat where they first run down the A pillars. Eventually, I'll cover up the seats and dash and put the water to it.

Also looking forward to cleaning and airing out the headliner and trim. Previous owner was apparently a smoker so there's still a faint odor. I welcome any miracle cures for odor elimination.

How am I doing so far?

You're doing just fine.

Headliner out! Total time about 90 minutes. Now that I've done it I could probably do it in under an hour if I did it all at once. Anyway, now that it's out I can start the leak hunt.

I'd like to get the sunroof adjusted while I've got the headliner out but since the control is attached to the headliner, that presents a bit of a challenge.

Set the headliner on top of the roof, and reconnect the wiring. Still have full use of the controls, but the headliner is out of the way.