Workshop Repair and Service Manuals GMC SIERRA
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09-08-57-002D General Water Leak Diagnostic Guide - (Feb 4 2013) Driveline Control 4WD Driveline Control - part 4

Rating:
Cause

Water may be entering the vehicle through the center high mounted stop lamp (CHSML)opening, and may leak down the B and/or C-pillars.

Correction

#09-08-57-002D: General Water Leak Diagnostic Guide - (Feb 4, 2013) Driveline Control 4WD Driveline Control

Lower the headliner and water test by running water onto the outer CHSML area whilelooking to verify any leak path down the B or C pillars. Seal by removing and cleaningthe CHMSL, then applying a bead of Kent Automotive High-Tech Clear Sealer (Part NumberP10200 5-oz. tube), or equivalent, along the outer edge of lamp surface so that itprovides an adequate seal between the body and the lamp housing. Reinstall the CHMSL,removeany excess sealant and reinstall the headliner.

Condition 10

The headliner may be wet, or water may collect on the headliner at the overhead console.In some instances, water may possibly be seen dripping from the overhead map lights.

Cause 1

Note:This condition is specific to 2500/3500 HD models only, which come with optional roofclearance (roof marker) lamps.

Water may be entering the vehicle through the one of the roof marker lamp openings.A water leak at the larger center lamp is most prevalent.

Correction 1

#09-08-57-002D: General Water Leak Diagnostic Guide - (Feb 4, 2013) Driveline Control 4WD Driveline Control

Lower the headliner and water test the roof lamps area to verify the leak path. Removeand clean the affected lamp, then apply a bead of Kent Automotive High-Tech ClearSealer (Part Number P10200 5-oz. tube), or equivalent, along the outer edge of lampsurface so that it provides an adequate seal between the body and the lamp housing.Reinstall the lamp assembly, remove any excess sealant and reinstall the headliner.

Cause 2

Note:This condition is specific to 1500 models only.

Water may be entering the vehicle through a burn hole in the forward seam above thewindshield, where the roof panels are welded together.

Correction 2

#09-08-57-002D: General Water Leak Diagnostic Guide - (Feb 4, 2013) Driveline Control 4WD Driveline Control

Lower the headliner and water test the roof/windshield area at the rearview mirroror the front right side. Once the leak path is verified, apply a bead of Kent AutomotiveHigh-Tech Clear Sealer (Part Number P10200 5-oz. tube), or equivalent, to the outsideof the roof panel seam and reinstall the headliner.

Condition 11

Carpet may be wet or water may be found on the driver side floor area, which onlyoccurs after the vehicle is driven in the rain or in wet road conditions.

Cause

This condition may be the result of an improperly seated parking brake cable grommet.

Correction

#09-08-57-002D: General Water Leak Diagnostic Guide - (Feb 4, 2013) Driveline Control 4WD Driveline Control

Remove the left side hinge pillar trim panel and position the carpet to expose thepark brake cable pass-through grommet (1).

#09-08-57-002D: General Water Leak Diagnostic Guide - (Feb 4, 2013) Driveline Control 4WD Driveline Control

Verify the leak concern by spraying water on the underside of the vehicle towardsthe parking brake cable grommet (1) on the front of dash (FOD). If a leak is evident,then properly install the brake cable grommet so it is fully seated to the front ofdash (FOD). If no leak is evident at the brake cable grommet, continue on to Condition12.

Condition 12

Carpet may be wet or water may be found on the driver side floor area.

Cause

#09-08-57-002D: General Water Leak Diagnostic Guide - (Feb 4, 2013) Driveline Control 4WD Driveline Control

The water leak may be due to a lack of sealer (or voids in the sealer) at the seamsof the front cowl area and front of dash (FOD), behind the left front fender.

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