Product Overview
The ACDelco Touch-Up Paint Tool is designed for repairing small scratches and chips on vehicle surfaces. It features a versatile four-in-one applicator system, providing both a precise pen-tip for minor imperfections and a brush applicator for larger areas. This tool includes both the base color and a clear coat for a complete repair, and is equipped with a mechanical agitator to ensure consistent color mixing.

Figure 1: The ACDelco Four-In-One Touch-Up Paint Pen. This image displays the full pen, highlighting its dual-tip design (pen and brush) and the clear labeling of the color code (WA637R) and product number (19328540). It also shows the safety warnings and volume information.
Setup and Preparation
Proper preparation is crucial for achieving optimal results. Follow these steps before applying the touch-up paint:
- Clean the Surface: Thoroughly clean the area to be repaired with soap and water to remove dirt, wax, and grease. Allow the surface to dry completely.
- Prepare the Area: For best adhesion, lightly sand the damaged area with fine-grit sandpaper (e.g., 2000-grit) if the scratch is deep or has raised edges. Clean off any sanding dust. The pen includes a fiberglass cleaning and prep tool for this purpose.
- Shake the Pen: Before each use, shake the touch-up paint pen vigorously for at least 60 seconds to ensure the paint and clear coat are thoroughly mixed. The mechanical agitator inside helps with this.
- Test Application: It is recommended to test the paint on an inconspicuous area or a piece of scrap material to verify color match and application technique.
Operating Instructions
The ACDelco Touch-Up Paint Pen features a dual-applicator system for precise and effective repairs.
Applying the Base Color:
- For Small Fixes (Pen-Tip): Unscrew the cap from the pen-tip end. Gently press the pen-tip onto a hard surface to initiate paint flow. Apply thin, even coats directly into the scratch or chip. Avoid over-applying.
- For Larger Scratches/Chips (Brush Applicator): Unscrew the cap from the brush applicator end. Carefully apply thin, even coats of paint to the damaged area using the brush.
- Drying Time: Allow each coat of base color to dry for at least 30 minutes before applying subsequent coats. Multiple thin coats are better than one thick coat.
Applying the Clear Coat:
- Once the final base color coat is dry to the touch (typically after 1-2 hours), apply the clear coat using the clear coat applicator (usually the opposite end of the pen or a separate component).
- Apply thin, even coats of clear coat over the repaired area to protect the paint and restore gloss.
- Allow the clear coat to dry completely. Full cure time can vary but typically takes 24 hours. Avoid washing the vehicle or exposing the repaired area to harsh conditions during this period.
Maintenance and Storage
To ensure the longevity and effectiveness of your touch-up paint pen:
- Clean Applicators: After each use, wipe any excess paint from the pen-tip and brush applicator with a clean cloth or tissue.
- Secure Caps: Always replace the caps tightly on both ends of the pen to prevent the paint and clear coat from drying out.
- Storage: Store the pen in a cool, dry place, away from direct sunlight and extreme temperatures. Keep it upright to prevent leakage.
- Shake Before Use: Even if stored for a short period, always shake the pen vigorously before subsequent uses to ensure proper mixing.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Paint not flowing from pen-tip. | Tip is clogged or paint is not agitated. | Shake the pen vigorously. Gently press the tip onto a hard, clean surface to prime it. If clogged, try cleaning the tip with a small amount of paint thinner (use caution). |
| Uneven application or streaks. | Too much paint applied, or surface not properly cleaned/prepped. | Apply thinner coats. Ensure the surface is clean and smooth before application. Avoid applying in direct sunlight or high heat. |
| Color mismatch. | Pen not shaken sufficiently, or incorrect color code. | Shake the pen for at least 60 seconds before use. Verify that the color code on the pen (WA637R) matches your vehicle's paint code. |
| Paint dries too quickly. | High temperature or direct sunlight during application. | Apply in a shaded area or on a cooler day. Work quickly and apply thin coats. |
Specifications
| Feature | Detail |
|---|---|
| Brand | General Motors |
| Model Number | 19328540 |
| Color | Cyber Gray Metallic (WA637R) |
| Finish Type | Metallic |
| Item Volume | 0.25 oz (7.39 mL) Base Color, 0.25 oz (7.39 mL) Clear Coat |
| Paint Type | Specialty |
| Applicator Type | Four-in-one (Fiberglass prep tool, Piston style pen-tip, Tapper tip brush applicator) |
| Surface Recommendation | Fiberglass (suitable for vehicle body panels) |
| Indoor/Outdoor Usage | Outdoor |
| Item Form | Pen |
| Included Components | Touch Up Paint, Clear Coat |
| Water Resistance Level | Water Resistant |
| Item Weight | 0.16 ounces |
| Product Dimensions | 7 x 5 x 2 inches |
Warranty Information
This ACDelco product is covered by a limited warranty against defects in materials and workmanship. For specific warranty terms and conditions, please refer to the documentation provided with your purchase or contact General Motors customer support. Keep your proof of purchase for warranty claims.
Customer Support
For technical assistance, product inquiries, or troubleshooting not covered in this manual, please contact General Motors customer support. You can typically find contact information on the product packaging or the official ACDelco website.
Online Resources: Visit the official ACDelco website for additional product information, FAQs, and support resources.





