Chevy/GMC Delphi HVAC Repair Kit (99-02) Single Zone only – Blend Door USA

Your 1999–2002 Chevy Silverado or GMC Sierra’s heat is stuck on one temperature, the A/C won’t respond, or you’re hearing a clicking noise from behind the dash. The plastic blend doors inside your Delphi HVAC box have cracked or broken — a known failure on this platform. This kit from Blend Door USA replaces all 4 doors permanently with CNC-machined solid aluminum that won’t crack again.

Fits: 1999–2002 Chevy Silverado & GMC Sierra — Delphi HVAC box, Single Zone only

⚠️ How to confirm you have the right kit:
Look through your glove box opening — confirm the HVAC box appearance matches the product image. VIN number does not guarantee a match — visual confirmation is the only reliable method. This kit is for single zone systems only. If you have a dual zone system, see our 03–12 Delphi kits.

⚠️ Note: This kit does not include drivers. You will reuse your existing OEM plastic drivers.

Why replace it?

• Heat stuck at one temperature regardless of dial position
• Clicking or ticking noise from behind the dash
• Temperature or mode control unresponsive or intermittent
• Plastic OEM doors cracked or broken

What’s included:

• All 4 CNC-machined solid aluminum blend door replacements
• Poly ether open-cell foam with 3M backing

CNC-machined solid aluminum. Lifetime guarantee. Made in Michigan by Blend Door USA.