2000 cadillac deville
1-15
Installation Procedure
1. Using the original part as a guide, mark a line
on the service rail 35␣ mm (1-5/16␣ in) forward
of the cut made to the original part; this
should be approximately 535␣ mm (21␣ in)
without the extension attached to the rail. This
will provide an overlap for welding the service
section (see Fig. 1-20).
2. Cut the service rail along the marked lines
and discard the unused section (Fig. 1-22).
3. Cut and remove approximately 35␣ mm
(1-5/16␣ in) of the flanges on the service-rail.
Cut a 5␣ mm (1/4␣ in) gap approximately
35␣ mm (1-5/16␣ in) along the corners of
the service rail to create tabs (Fig. 1-23).
4. Step the tabs inward to allow the service rail
to fit inside the original rail (Fig. 1-24).
5. Position the modified service rail inside the
original rail, allowing 35␣ mm (1-5/16␣ in)
of overlap.
6. Check the position of the service rear rail
section using three-dimensional measuring
equipment and tack weld in three locations
along all three sides of the rail (Fig. 1-25).
Stitch weld along the entire seam and replace
factory welds as necessary.
7. Drill two 8␣ mm (5/16␣ in) holes for plug
welding in each of the three sides of the rail
approximately 30␣ mm (1-3/16␣ in) from the
sectioning joint, plug weld through the drilled
holes into the service rail.
8. Clean and prepare welded surfaces.
IMPORTANT: Prior to refinishing, refer to
the publication GM4901M-D-2000 “GM
Approved Refinish Materials” for
recommended products. Do not combine
paint systems. Refer to manufacturer’s
recommendations.
9. Apply sealers and anti-corrosion materials as
necessary.
10. Prime with two-part catalyzed primer.
11. Install all related components.
Fig.␣ 1-22 — Cut the Rail for Sectioning
Fig.␣ 1-23 — Create Tabs on the New Rail
Section
Fig.␣ 1-24 — Step Tabs Inward on the New Rail
Section
Fig.␣ 1-25 — Install the New Rail Section
FRT
FRT