Front and/or Rear Fascia Peeling – 2017-2019 Chevrolet Corvette

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Service Bulletin Bulletin No.: 17-NA-355
Date: June, 2019
TECHNICAL
Subject: Front and/or Rear Fascia Peeling
Brand: Model:
Model Year: VIN:
Engine: Transmission:
from to from to
Chevrolet Corvette 2017 2019 All All
Involved Region or Country North America, Japan, Europe, Middle East, Russia, Thailand
Page 2 June, 2019 Bulletin No.: 17-NA-355
Condition
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Some customers may comment that a front and/or rear upper fascia may be peeling at
the interfacing edge to the fender or quarter panel. Some examples are shown circled in
the graphics above.
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Cause
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The cause of the condition may be lack of paint adhesion due to improper surface
preparation.
Correction
Important: Refer to the latest revision of the GM Approved Refinish Materials book to
identify the paint systems you may use that have been engineered to meet GM
standards.
The latest revision of the GM Approved Refinish Materials is found in GM
Service Information (SI) under Unit Repair Manual/Specialty Publications. A
PDF copy of the GM Approved Refinish Materials booklet is located on the
Genuine GM Parts website at www.genuinegmparts.com.
Refinish the front and/or rear upper fascia(s) following the Service Procedure below.
Service Procedure
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Important: Repair of the rear fascia pertains ONLY to
2017 and 2018 Model Year vehicles. Containment of
the rear fascia paint condition was successful
SOP 2019.
1. Remove the affected front and/or rear fascia(s)
from the vehicle. Refer to Front Bumper Fascia
Replacement and/or Rear Bumper Upper Fascia
Replacement in SI.
Important: For all cleaning and prep procedures, use
the product following your paint manufacturer’s
recommendation.
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2. Completely clean the fascia with soap and water.
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3. Follow up with additional cleaning using a solvent
cleaner. In our case, the paint manufacturer’s
recommendation was a PPG Universal Cleaner for
plastic.
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4. Inspect all edges of the fascia for any evidence of
paint peeling, or lack of adhesion.
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Important: In the affected area(s), sand the paint edge
down to the plastic surface, across the whole edge.
Hand sanding is recommended in this step to avoid
glazing of the plastic surface.
5. Feather edge the affected area(s) on the fascia,
hand sanding with 240/320 grit sand paper.
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6. Repeat feather edging the repair area(s), machine
sanding with 320 grit sand paper.
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7. Clean again with a Universal Plastics Cleaner.
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8. Scuff the adjacent fascia and lamp mounting
surfaces with a 3M Scotch Brite™ Red Hand Pad
and tape off as necessary.
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Important: Use GMW 15406 approved Adhesion
Promoters.
9. Apply “All in One” or Universal Plastic Adhesion
Promoter to the repair area(s). In our case, the
paint manufacturer’s recommendation was a PPG
Adhesion Promoter.
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Important: Maintain a minimal primer and paint
thickness in areas where the fascia will contact an
interfacing panel.
10. Apply 2K catalyzed primer to the repair area(s),
following your paint manufacturer’s
recommendation.
11. Final prep, refinish and clearcoat the fascia(s)
following the GM Approved Refinish Materials
booklet and your paint manufacturer’s
recommendations.
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Important: Ensure the front fascia paint is allowed to
fully cure before applying the mylar tape.
Note: The right side location of the mylar tape is
shown circled in the graphic above.
12. If the paint repair was completed on a FRONT
fascia, add a piece of protective mylar tape to
EACH front upper corner of the fascia, following
the steps below:
12.1. Using the 3M referenced mylar tape from the
part table below, or equivalent, cut 2 pieces,
25 mm (1.0 in) x 25 mm (1.0 in) in size.
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12.2. Position the piece of tape to the corner of the
fascia where it meets the fender, and press
onto the fascia. Ensure the tape is OVER the
parting line, but BELOW the fascia radius.
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12.3. Using a razor blade, trim off the excess tape
following the molded contour of the fascia.
12.4. Repeat mylar tape installation on the
opposite side of the front fascia.
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Note: As shown in the graphic above, no Mylar tape
should be visible on the A-surface once the front fascia
is reinstalled.
13. Reinstall the front and/or rear fascia(s). Refer to
Front Bumper Fascia Replacement and/or Rear
Bumper Upper Fascia Replacement in SI.
Parts Information
Replace fascia rivets, emblems, and front seal as
necessary. Use the vehicle identification number (VIN),
SI, and the GM Electronic Parts Catalog to determine
the proper parts to order.
Causal
Part
Description Part
Number
Qty
N/A PROTECTORRKR
PNL RR
MLDG
(mylar tape)
23494463 As needed
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Warranty Information
For vehicles repaired under the Bumper-to-Bumper
coverage (Canada Base Warranty coverage), use the
following labor operation. Reference the Applicable
Warranties section of Investigate Vehicle History (IVH)
for coverage information.
Labor
Operation
Description Labor
Time
Paint
Code
1480938*
R & I Front
Fascia, Partial
Refinish Color/
Clearcoat,
Replace Seal and
Emblem
4.3 hrs** AN
Add With Tint Coat/
Tri-Coat Paint 0.3 hr GC
1480948*
R & I Rear Upper
Fascia, Partial
Refinish Color/
Clearcoat,
Replace Emblems
(2) (2017 and
2018 MY’s ONLY)
4.5 hrs** AN
Add With Tint Coat/
Tri-Coat Paint 0.3 hr GC
1480958*
R & I Front AND
Rear Upper
Fascias, Partial
Refinish Color/
Clearcoat,
Replace Seal and
Emblems (2017
and 2018
MY’s ONLY)
8.0 hrs** AV
Add With Tint Coat/
Tri-Coat Paint 0.4 hr GD
*This is a unique Labor Operation for Bulletin use only.
**Includes repair/prime fascia, and Paint Mix Time
Version 2
Modified Released November 13, 2017
June 25, 2019 – Added the 2019 Model Year, Russia and Thailand to Involved Region or
Country, an Important to step #1 of the Service Procedure and a Specification to Labor
Operations 1480948 and 1480958.

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