Evap leak on a 2003 Pontiac Bonneville, what should i do?

Marvin

• 85242 Answers
• Posted on Apr 07, 2009

SOURCE: 2003 pontiac bonneville wipers wont shut off

There is a TSB (Technical Service Bulletin) for this problem, consult GM for more info. It simply regards the wiper module cover assembly that has been problem atic in most gm vehicles. Your best bet though would be to remove the cover and look for any signs of moisture intrusion, or broken circuts. If you find a broken circut and are handy with a solidering iron, you may be able to fix this problem. If there is any evidence of moisture, you may want to try to dry the unit out and see if that makes any difference. Normally though this problem ends in replacinjg the complete wiper module cover assembly. Here is where that item is located.

SOURCE: Pontiac Bonneville with water leaking into trunk

same problem happened to my 2005 bonneville. inside the trunk and behind the carpet covering the wheel wells there are two water drain tubes. these tubes run down the inside of the "c" pillar and drain the water from the sunroof. they make a 90 degree bend at the bottom back of the wheel well(inside the trunk) and fit inside a round rubber tube/grommet at both of the rear wheel wells that lets the water drain outside.either the plastic 90 degree tube has come out of the rubber tube/grommet or the drain tube could be plugged up with debris. also make sure the two round rubber tube/grommets are installed correctly and seal the hole going through the trunk to the outside of each wheel well. this is of course only for those bonnevilles that have a factory sun/moon roof.

SOURCE: Remove driver's-side mirror on 2003 Pontiac Bonneville

Remove the small triangle panel in the corner of the window, one clip. then to remove all of the door panel you can pry starting at the bottom and work to the sides. once all push clips are off. (they really sound bad when they come loose, but that is normal.) push the panel up to remove the last two holders behind the door handle. You will have to remove these later with a needle nose pliers and slide them back on the door panel before you reinstall. remove elect from block and remove the Three screws holding the mirror. they are 10MM I think. and the mirror will practicly fall our. Or just hit something with it like my wife does and they come off pritty easy.

SOURCE: Where are the chassis drain plugs on a 2003

Your trunk leak most likely is rubber seal that runs the perimeter of trunk when trunk lid is open. Leak on pass floor can be a combination of things. Heater core or if car has sunroof, there is drains that run down windshield posts. Carpet will be wet and sticky if heater core is leaking (not to mention coolant level low) If it's sunroof drain, car has to be put on a lift and drains blown out with compressed air.