DESIGN ENGINEERING DEI 50023 Precut Interior Kit Instruction Manual

DESIGN ENGINEERING DEI 50023 Precut Interior Kit

Product Information

• Product Name: 50023 1988-1998 C/K Truck Insulation Kit (Ext Cab)
• Manufacturer: Design Engineering, Inc.
• Description: This insulation kit is designed for 1988 to 1998 Chevy GMC C/K trucks. It controls heat and sound, providing improved comfort and noise reduction for the vehicle’s interior.
• Tools Needed: Marker, Utility knife/Scissors
• Safety Equipment: Safety glasses, Gloves

Product Usage Instructions

Piece A – Firewall and Front Floor Section

1. Remove seats, console & carpet. Clean dirt/debris and recommend using sealer on any rust spots (View from passenger side). Refer to Fig. 1 in the manual for visual reference.
2. Once the floor pan is exposed, clean all debris, grease, and rust from the area. Consider using Boom Mat Prep spray (50491) to seal and convert any rust and corrosion.

Piece B – Rear Floor Section

• Follow the instructions provided for Piece A to install the rear floor section.

Piece C – Rear Bulkhead Section (Placed Vertically on Rear Bulkhead)

• Note: Darker grey side of material faces up. Lighter side goes down against metal.

Installation Steps:

Step 1: Test Fit and Mark Mounting Holes

1. Test fit all pieces in place. Mark and cut all mounting holes needed. Refer to Fig. 2 and Fig. 3 for visual reference.

Step 2: Secure Under Carpet Lite Insulation

1. Lay the Under Carpet Lite insulation down as shown in Fig. 2 and Fig. 3. Test fit all pieces before securing in place.
2. Using a sharpie marker, mark each hole that is needed for your specific application.
3. Using a sharp knife, cut the holes needed.

Step 3: Install Adhesive Transfer Tape

1. Install strips of adhesive Transfer Tape to the floor pan where needed to hold the Under Carpet Lite insulation in place.
2. The placement of the tape is not critical. Just apply it to areas that will hold the insulation securely.
3. Once applied, peel back the liner of the tape and press the Under Carpet Lite Insulation in place.

Step 4: Reinstall Interior

1. Install your carpet back in place over the new insulation.
2. Reinstall the rest of the interior components.

Please note that if you are unsure about any installation procedure, it is recommended to contact a certified technician for assistance.

NSTALLATION INSTRUCTIONS

Thank you for purchasing genuine Design Engineering, Inc. products. Be sure to always wear the proper safety
equipment when installing any DEI product. Design Engineering Inc. WILL NOT BE HELD LIABLE FOR IMPROPER INSTALLATION OR USE OF THIS PRODUCT. Please follow all instructions provided. If you are unsure of any installation
procedure, please contact a certified technician.

DESCRIPTION: 50023

• 1988-1998 C/K Truck Insulation Kit (Ext Cab)

KIT CONTENTS

• 3 Pieces pre-cut Under Carpet Lite Insulation
• 1 roll adhesive Transfer Tape
• Instructions

TOOLS NEEDED

• Marker
• Utility knife/Scissors

SAFETY

• Safety glasses
• Gloves

NOTE OF CAUTION: Wear eye and hand protection when installing all materials.

OVERVIEW

This kit controls heat and sound on 1988 to 1998 Chevy GMC C/K trucks.

• Remove seats, console & carpet. Clean dirt/debris and recommend using sealer on any rust spots (View from passenger side)

Preparation

• STEP 1. Remove your seats, floor console and carpet according to the manufacturer’s instructions. (Fig 1)
• STEP 2. Once the floor pan is exposed, clean all debris, grease, and rust from the area. Now would also be a good time to coat any areas using Boom Mat Prep spray (50491) to seal and convert any rust and corrosion. (Fig 1)
• NOTE: Darker grey side of material faces up. Lighter side goes down against metal.
• Test fit all pieces in place. Mark & cut all mounting holes needed (View from driver side)
• Test fit all pieces in place. Mark & cut all mounting holes needed (View from driver side)
• Install strips of adhesive Transfer Tape to the floor pan where needed to hold.
• Under Carpet Lite insulation in place. The placement is not critical. Just apply to areas to hold insulation in place.
• Once applied, peel back liner of tape and press Under Carpet Lite Insulation in place.

Installation

• STEP 1. Lay the Under Carpet Lite down as in Fig 2 & Fig. 3. Test fit all pieces before using the DEI Transfer Tape to secure in place.
• STEP 2.While the new insulation is precut to fit your vehicle, we do not cut the holes for seat bolts or belt hardware due to the fact of different configurations and production tolerances. Using a sharpie marker, mark each hole that is needed for your application. Then using a sharp knife, you can cut the holes needed.
• STEP 3. Now that you are satisfied with the fit you can attach the Under Carpet Lite to the floor pan. Cut small stripes of the Transfer Tape and apply to the floor in various areas. The location is not important as long as you use enough to secure the Under Carpet Lite. Lay the Under Carpet Lite back in place and lift areas to expose the transfer tape. Remove the tape backing and press the Under Carpet Lite back in place, pushing in the tape areas. Do this for all the areas around the cab as needed. Fig. 4
• STEP 4.Install your carpet back in place over the new insulation. Reinstall the rest of the interior.
• INS# 60104003 REV 10/2021

Documents / Resources

| DESIGN ENGINEERING DEI 50023 Precut Interior Kit [pdf] Instruction Manual
DEI 50023 Precut Interior Kit, DEI 50023, Precut Interior Kit, Interior Kit, Kit
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