Water Leaks at Overhead Console Map - kw body dome door front lamp lightroof water window

When servicing the vehicle with the VIN you entered, the following diagnosis might be helpful if the vehicle exhibits the described symptoms.

Water leak at overhead console/map light. Water may also be coming through overhead rear HVAC control area or edges of headliner. Cause: There have been 5 areas identified as possible causes for water leaks, all of which can cause water leaking from the overhead console/map light area due to this being the low spot in the roof. Following are 5 causes of leaks and the corrections for each one.

Correction: #1: Windshield not sealed properly. This will most likely become evident by water dripping down the inside Of the windshield or by a damp headliner near the windshield. It is also possible for the water to find its way to the overhead Console/dome light area. Reseal windshield as necessary. Please note: the leak may not be at the windshield but in the urethane to verify this, run low pressure water under the windshield surround molding at the top corners. If you pull down the auxiliary molding slightly, you will see a hole to run the water in. If there is a void in the urethane, this will highlight it immediately.

#2: Sealant under ditch molding between B and C pillars. Voids in the sealant under the ditch molding (the molding covering the Roof-to-side panel body seam) have been found. Remove the black ditch molding for better access. There are several patch type seals in this area. Look for an obvious hole, a fold in the patch, or a pin hole. Also look for a fold in the sheet metal at the upper corner. Any of these will create a leak which could show up at the center of the windshield.

#3: Door weatherstrips not sealed properly. Voids in sealant under weatherstrips allowing water into body seam. Seal as necessary.

#4: Rear hatch wiring harness grommet poor fit. At some undetermined time, this grommet has been revised during production for better fit. Vehicles built previous to this change may have leaks between the grommet and body. Replace grommet and/or seal grommet to body.

#5: Roof rack grommet leaks. Leaks between grommets and roof; seal grommet as appropriate.

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Please follow this diagnosis process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed. If these steps do not resolve the condition, please contact GM TAC for further diagnostic assistance. This diagnostic approach was developed for the vehicle with the VIN you entered and should not be automatically be used for other vehicles with similar symptoms.

(1997-04 Pontiac Montana) and (1997-04 Oldsmobile Silhouette) and (1997-04 Chevrolet Venture)

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