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shawnvw -> RE: 2001 S10 blazer (2/13/2008 6:30:06 PM)
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Subject:
General Water Leak Guide #02-08-57-004 - (06/05/2002)
Models:
1996-2002 Chevrolet S-10, Blazer
1996-2002 GMC Sonoma, Jimmy
1996-2001 Oldsmobile Bravada
The conditions below are prioritized in order of most common leak areas.
When watertesting at the front of the vehicle, run water down the center of the windshield to fill the plenum, as well as the corners of the windshield for hinge pillar entry.
Leak Area
Condition
Right front floor wet
1
Right or left floor wet under carpet
2
Front or rear floor wet under carpet
3
Water coming out of kick pad
4
Windshield leak
5
"A" Pillar leak
6
Third door waterleak
7
Carpet wet in the rear
8
Carpet wet in the rear and or in the corners at the base of the "C" pillar
9
Rear floor wet
10
Rear floor wet (1/4 Window Pickup)
11
Water at the base of the "D" pillar.
12
Condition 1
Right front floor wet.
Cause A
[image]http://service.gm.com/engif/000/000/889/889197.gif[/image]
[image]http://service.gm.com/tif.gif[/image]
The right or left plenum drain may be plugged or the drain has excess sealer that acts as a dam. (Right side shown, left side typical). Refer to the illustration above.
Cause B
[image]http://service.gm.com/engif/000/000/888/888082.gif[/image]
[image]http://service.gm.com/tif.gif[/image]
Water may enter through the air box if the air box is loose. Refer to the illustration above.
The air box may have excess sealer causing interference and not allowing the air box to seat properly.
Max A/C is turned on through a car wash or heavy rain.
Correction A
Remove the obstruction or trim away excess sealer leaving no higher than 6.35 mm (1/4 in) to the bottom edge of the drain.
Correction B
If the air box is loose, tighten the lower right fastener first, then the other fasteners in a clockwise order (lower right, lower left, upper left, upper right) to 10 N·m (89 lb in).
If the air box cannot be seated properly against the front of dash due to an interference from the sealer, cut away excess sealer in order to allow a proper seal.
Max A/C opens the recirculation/air box door (upward) in the air box. Water can pool on the door and gain entry to the front passenger compartment. Excess water can enter through the cowl grill fasteners and drop onto an open air box door, or splash onto the door from the plenum. It is sometimes possible to minimize the amount of water gaining access to the door by applying thumb grade sealer to the right most cowl grille fastener and the upper fender bolt holes before securing.
Condition 2
Right or left front floor wet under carpet.
Cause A
[image]http://service.gm.com/engif/000/000/888/888084.gif[/image]
[image]http://service.gm.com/tif.gif[/image]
[image]http://service.gm.com/engif/000/000/888/888083.gif[/image]
[image]http://service.gm.com/tif.gif[/image]
The inside of the plenum along the hinge pillar may have a void in the sealer. Refer to the illustration above.
Cause B
[image]http://service.gm.com/engif/000/000/888/888085.gif[/image]
[image]http://service.gm.com/tif.gif[/image]
Inspect for voids outside the plenum along the hinge pillar. Refer to the illustration above.
Correction
Clean the area with one of the cleaners listed below and seal the area with one of the sealers listed below.
Condition 3
Front or rear floor wet under carpet.
Cause A
Make sure the primary door weatherstrip is properly seated (especially in the corners) and not warped or damaged.
Excess sealer to the primary seal mounting flange may prevent the seal from seating all the way.
Cause B
The front or rear door water deflector may not be seated properly to the door frame.
Correction A
Seat the seal to the flange.
Remove the seal and remove the excess sealer from the mounting flange.
[image]http://service.gm.com/engif/000/000/888/888086.gif[/image]
[image]http://service.gm.com/tif.gif[/image]
Important: Once a weatherstrip has been improperly seated, it is sometimes necessary to completely remove, reinstall or replace the weatherstrip.
If you have verified the above and water is still entering the vehicle in this area, the outer flap of the weatherstrip can be trimmed at the butt joint to allow water to exit rather than enter the vehicle. Refer to the illustration above.
Correction B
Clean the door surface (around the perimeter of the water deflector) with one of the cleaners listed below, or equivalent.
Important: The door surface must be at room temperature or the adhesive will not stick.
Using a 51 mm (2 in) wallpaper roller, roll out the butyl adhesive. Start at the bottom center and work outboard up the right and left sides.
A 51 mm (2 in) roller may be purchased at your local hardware or wallpaper store.
Condition 4
Water coming out of lower kick pad.
Cause
The door wire harness grommet may not be seated to the "A" pillar.
Correction
Make sure the grommet is fully seated to the "A" pillar.
Condition 5
Windshield leak.
Cause
There may be a void in the urethane sealer.
Correction
Use compressed air and soap and water to determine whether the windshield is leaking.
Remove and reseal the windshield.
Condition 6
"A" pillar leaks.
Cause
Verify that the sunroof drain hole is not plugged, and that the drain hose is correctly routed through the "A" pillar.
Correction
If the drain hole is not plugged, and the drain hose is correctly routed, inspect the primary seal for gaps, warping or disfigurement.
Condition 7
Third door waterleak to the primary seal.
Cause
Third door waterleaks are generally caused by insufficient compression at the top of the door or by an improperly seated third door weatherstrip.
Correction A
[image]http://service.gm.com/engif/000/000/888/888087.gif[/image]
[image]http://service.gm.com/tif.gif[/image]
Repair insufficient compression by adding an additional piece of itch tape behind the secondary weatherstrip. Refer to the illustration above. A double thickness is supplied at the factory in this location. Adding one more thickness will stop some leaks. If adding itch tape does not stop the leak, bend the top of the door slightly so that it contacts the secondary seal.
Correction B
[image]http://service.gm.com/engif/000/000/888/888088.gif[/image]
[image]http://service.gm.com/tif.gif[/image]
Third door weatherstrip related leaks are caused by the bottom push pin not being seated (refer to the illustration above), or by a gap anywhere along the vertical surface of the seal. If the bottom pin is seated, remove the seal and reinstall using the following sequence.
•
Seat the upper weatherstrip pin.
•
Seat the lower weatherstrip pin.[/ali
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