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3-8 2002 Avalanche
Center Pillar
Sectioning
Installation Procedure
1. Cut the replacement Center Pillar in
corresponding locations to fit the
remaining original panel. The sectioning
joint should be trimmed to allow a gap of
one-and-one-half times the metal
thickness at the sectioning joint.
2. Create a 50␣ mm (2␣ in.) backing plate
from the unused portion of the service
part. Trim the backing plate as necessary
to fit behind the sectioning joint.
3. Perform additional sectioning procedures
as necessary. Refer to Windshield
Sectioning; Front Lower Pillar
Sectioning; Rear Lock Pillar Sectioning;
and Rocker Sectioning.
4. Drill 8␣ mm (5/16␣ in.) plug weld holes
along the sectioning cut on the
remaining original part.
5. Drill 8␣ mm (5/16␣ in.) plug weld holes in
the service panel as necessary in the
locations noted from the original panel
and along the sectioning cut.
CAUTION: FOAM SEALERS ARE
FLA␣ MMABLE AND SHOULD BE
REMOVED FROM ALL WELD
LOCATIONS.
6. Prepare the mating surfaces as necessary.
7. Apply weld-through primer to all bare
metal surfaces.
8. Fit the backing plate halfway into the
sectioning joint, clamp and plug weld to
the vehicle.
—continued
1
50MM
(2 IN)
100MM
(4 IN)
PLUG WELDS
13 MM
(1/2 IN)
ORIGINAL PART
BACKING PLATE