Auto Metal Direct 460-4074-55AC 74-75 C/K Temp Control, w/ AC

Restore proper heater and air conditioning operation in your classic Squarebody truck or SUV with this OE-style Temperature Control Assembly for 1974–1975 Chevrolet and GMC C/K Truck and SUV models equipped with factory air conditioning. Manufactured from all-new AMD tooling, this premium reproduction assembly delivers superior fitment, factory-style appearance, and dependable functionality for your classic GM truck restoration.

Designed as a direct replacement for original factory A/C heater control assemblies, this reproduction accurately replicates the original factory layout, mounting points, and control operation used in 1974–1975 Squarebody trucks and SUVs. Original climate control assemblies commonly become worn, faded, loose, cracked, or fail internally after decades of use, causing improper heater and air conditioning operation.

Engineered for precise OE-style installation, this assembly fits directly into the factory dashboard opening for seamless installation during restoration projects, interior refurbishments, or climate control repairs. Manufactured using exclusive AMD tooling for factory-correct appearance, improved fitment, and long-lasting durability.

Fits a wide range of classic Chevrolet and GMC Squarebody pickup trucks and SUVs including C10, C20, C30, K10, K20, K30, Blazer, Jimmy, and Suburban models equipped with factory air conditioning.

Replaces GM part# 340420 and 348775.

Key Features:

• OE-style temperature control assembly
• Fits 1974–1975 Chevy GMC C/K Trucks and SUVs with factory A/C
• Manufactured from all-new AMD tooling
• Premium OE-style replacement
• Correct factory-style appearance and operation
• Direct-fit installation
• Accurate mounting points and control layout
• Ideal for restoration and replacement applications
• Replaces GM part# 340420 and 348775

Vehicle Compatibility:

Chevrolet

• 1974–1975 C10 Pickup
• 1974–1975 C20 Pickup
• 1974–1975 C30 Pickup
• 1974–1975 K10 Pickup
• 1974–1975 K20 Pickup
• 1974–1975 K30 Pickup
• 1974–1975 Blazer
• 1974–1975 Suburban

GMC

• 1974–1975 C15 Pickup
• 1974–1975 C25 Pickup
• 1974–1975 C35 Pickup
• 1974–1975 K15 Pickup
• 1974–1975 K25 Pickup
• 1974–1975 K35 Pickup
• 1974–1975 Jimmy
• 1974–1975 Suburban

Notes or Fitment Clarifications:

• Fits models equipped with factory air conditioning
• Manufactured from all-new AMD tooling
• Premium OE-style replacement
• Replaces GM part# 340420 and 348775
• Designed for Squarebody truck and SUV applications
• Verify application prior to ordering