Chevrolet Silverado / GMC Sierra. Manual - part 2687

2008 ACCESSORIES & EQUIPMENT

Plastic Panel Information and Repair - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra 

& Silverado 

SPECIFICATIONS 

FLEXIBLE PLASTIC PART REPAIR MATERIALS 

Product - 88861039, *88861040, High Strength Plastic Repair 50 ml 

Components - 12 cartridges with 2 mixers each 

Structural and Cosmetic 

Recommended Repair Material 

Working Time 

RIGID PLASTIC PART REPAIR MATERIALS 

Product

Components

Recommended 

Repair Material

Work Time 70°F

Handling Strength 

at 70°F

88861039 

*88861040 

High 

Strength Plastic 

Repair 50 ml

12 cartridges with 2 

mixers each

Structural and 

cosmetic bonding 

and repairing of all 

flexible plastics. 

Requires GM P/N 

12378462 on TPO 

plastics. Will also 

bond e-

coated/primed 

metals.

90 seconds

10 minutes

* TPO, TEO, (Polyolefin Plastics) require the application of polyolefin adhesive primer before the GM 
P/N 88861039 repair compound is applied.

Product

Adhesive 

Sandability at 70°F

Part Paintability at 

70°F

Adhesive Full 

Cure at 70°F

Program

88861039 

*88861040 

High 

Strength Plastic 

Repair 50 ml

20 minutes

30 minutes

24 hours

Bumper covers, 

emblems, door 

trims, exterior and 

interior repairs*

* TPO, TEO, (Polyolefin Plastics) require the application of polyolefin adhesive primer before the GM 
P/N 88861039 repair compound is applied.

Recommended Repair 

 

2008 Chevrolet Silverado 1500 

2008 ACCESSORIES & EQUIPMENT Plastic Panel Information and Repair - Cab & Chassis Sierra, Cab & Chassis 

Silverado, Sierra & Silverado

  

 

2008 Chevrolet Silverado 1500 

2008 ACCESSORIES & EQUIPMENT Plastic Panel Information and Repair - Cab & Chassis Sierra, Cab & Chassis 

Silverado, Sierra & Silverado

  

Microsoft 

 

Friday, August 21, 2009 2:22:25 PM

Page 1 

© 2005 Mitchell Repair Information Company, LLC. 

Microsoft 

 

Friday, August 21, 2009 2:22:29 PM

Page 1 

© 2005 Mitchell Repair Information Company, LLC. 

Thermoset Plastic Type

Type of Repair

Material

Availability

Sheet metal compound 

(SMC), RIM rigid plastic 

parts

Cosmetic filling

GM Goodwrench® 

Structural Bonding Epoxy 

(GM P/N 12345726 or 

equivalent)

GM Dealer/Retailer

Sikkens Polystop LP™ or 

equivalent polyester 

repair putty

Refer to a local paint 

supplier

Most rigid plastic parts

Cosmetic repair, 

adhesive bonding

GM Goodwrench® 

Structural Bonding Epoxy 

(GM P/N 12345726 or 

equivalent)

GM Dealer/Retailer

Lord Fusor® SMC Body 

Panel Repair Adhesive or 

equivalent

Refer to local paint 

supplier

Most rigid plastic parts

Adhesive bonding

GM Goodwrench® 

Structural Bonding Epoxy 

(GM P/N 12345726 or 

equivalent)

GM Dealer/Retailer

Dynatron Dyna-Weld Plio 

Grip® or equivalent (OE 

structural adhesive)

Refer to local paint 

supplier

Most rigid plastic parts

Adhesive structural* 

bonding

GM Goodwrench® 

Structural Bonding Epoxy 

(GM P/N 12345726 or 

equivalent)

GM Dealer/Retailer

Most rigid plastic parts

Adhesive bonding 

Structural bonding

Ashland Pliogrip® 

7773B-3-minute 

Ashland Pliogrip® 

7779B-10-minute 

Ashland Pliogrip® 

7770B-35-minute

Supplied by Crest 

Industries 

1-800-822-4100 

fax 1-800-344-4461

SRIM most rigid plastic 

parts

Cosmetic repair, 

adhesive bonding

GM Goodwrench® 

SRIM™ repair kit (GM 

P/N 12378523) or 

SIA™ Adhesives, INC. 

SRIM™ repair kit P/N 

30208030001 adhesive 

200ML TUBES P/N 
30208020001 50ML 

TUBES P/N 

30208010001

SIA Adhesives, INC. 

customer service 1-330-

374-2468

* Structural adhesive bonding may require the use of a pneumatic applicator, 
A8-37479-1A, or equivalent, to speed the application of the GM P/N 
12345726 epoxy.

Kent-Moore 1-800-GM-

TOOLS

 

2008 Chevrolet Silverado 1500 

2008 ACCESSORIES & EQUIPMENT Plastic Panel Information and Repair - Cab & Chassis Sierra, Cab & Chassis 

Silverado, Sierra & Silverado

  

Microsoft 

 

Friday, August 21, 2009 2:22:25 PM

Page 2 

© 2005 Mitchell Repair Information Company, LLC. 

REPAIR INSTRUCTIONS 

GENERAL PLASTIC REPAIR 

The following procedures should be followed when repairing all types of thermoset plastic: 



Follow the manufacturer's application and curing recommendations.  



Do not intermix systems. Use the supplies and the repair materials from the same manufacturer.  



Clean the inner and outer surfaces of the repair area with a soap impregnated scouring pad in order to 
remove any dirt or mold release agent.  



Clean the area with a wax and grease remover, using only enough of the remover to dampen a cloth. 
Allow the panel to dry thoroughly.  



Remove the surface finish from the area to be repaired. Adhesives are designed to adhere to the plastic 
substrate, not the finish.  



Prime a metal surface before applying the repair material.  



Inspect the rear side of the work area before making repairs in order to avoid possible damage to wires, 
motors, etc.  

DESCRIPTION AND OPERATION 

HOW TO IDENTIFY PLASTIC PARTS 

CAUTION: In order to reduce the risk of personal injury when exposed to toxic fumes 

while grinding, cutting, or applying repair material on any type of sheet 
molded compound or RIM rigid plastic, observe the following guidelines: 



Work in a properly ventilated area  



Apply protective cream to any exposed skin  



Remove any mixture that comes into contact with skin  



Wash skin with cold water to remove glass and resin dust  



Use a sander with a vacuum attachment  



Follow the repair material manufacturer's instructions  

 
Also, always wear the following: 



An approved respirator, or air supplied respirator  



Eye protection  



Rubber gloves  



Earplugs  



Protective clothing  

 

2008 Chevrolet Silverado 1500 

2008 ACCESSORIES & EQUIPMENT Plastic Panel Information and Repair - Cab & Chassis Sierra, Cab & Chassis 

Silverado, Sierra & Silverado

  

Microsoft 

 

Friday, August 21, 2009 2:22:25 PM

Page 3 

© 2005 Mitchell Repair Information Company, LLC. 

Fig. 1: Identifying SAE Code 
Courtesy of GENERAL MOTORS CORP. 

Plastic parts can be identified by the SAE code, which is usually found on the rear of the part, and/or by the 
characteristics of the plastic. Knowing the type of plastic aids in selecting the proper repair materials and in 
selecting the proper repair procedure. 

 

2008 Chevrolet Silverado 1500 

2008 ACCESSORIES & EQUIPMENT Plastic Panel Information and Repair - Cab & Chassis Sierra, Cab & Chassis 

Silverado, Sierra & Silverado

  

Microsoft 

 

Friday, August 21, 2009 2:22:25 PM

Page 4 

© 2005 Mitchell Repair Information Company, LLC.