1974 GMC K25/K2500 Pickup Auto Trans Vacuum Modulator
Navigate our online catalogue to find original replacement Auto Trans Vacuum Modulators specifically designed to fit a 1974 GMC K25/K2500 Pickup.








Auto Trans Vacuum Modulator
$109.24 CAD
In Stock
Condition: New
Ships: in 3-4 Business Days
Pick-Up: in 3-4 Business Days
Pick-Up: in 3-4 Business Days
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 7.4L 7439cc 454ci V8 (4.25x4.00; 108.0x101.6); Transmission Code: THM400; Transmission Speeds: 3;
Engine Base: 7.4L 7439cc 454ci V8 (4.25x4.00; 108.0x101.6); Transmission Code: THM400; Transmission Speeds: 3;
Vehicle Fitment Notes:
Alternate Number
Alternate Number







Auto Trans Vacuum Modulator
$109.24 CAD
In Stock
Condition: New
Ships: in 3-4 Business Days
Pick-Up: in 3-4 Business Days
Pick-Up: in 3-4 Business Days
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 7.4L 7441cc 454ci V8 (4.25x4.00; 108.0x101.6); Transmission Code: THM400; Transmission Speeds: 3;
Engine Base: 7.4L 7441cc 454ci V8 (4.25x4.00; 108.0x101.6); Transmission Code: THM400; Transmission Speeds: 3;
Vehicle Fitment Notes:
Alternate Number
Alternate Number






Auto Trans Vacuum Modulator
$175.41 CAD
Limited Stock
Condition: New
Ships: Monday Oct. 13th
Pick-Up: Ready in 1 Hour Monday Oct. 13th
Pick-Up: Ready in 1 Hour Monday Oct. 13th
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 7.4L 7439cc 454ci V8 (4.25x4.00; 108.0x101.6); Transmission Code: THM400; Transmission Speeds: 3;
Engine Base: 7.4L 7439cc 454ci V8 (4.25x4.00; 108.0x101.6); Transmission Code: THM400; Transmission Speeds: 3;
Vehicle Fitment Notes:
Exhaust stock and reorder
Exhaust stock and reorder






Auto Trans Vacuum Modulator
$175.41 CAD
Limited Stock
Condition: New
Ships: Monday Oct. 13th
Pick-Up: Ready in 1 Hour Monday Oct. 13th
Pick-Up: Ready in 1 Hour Monday Oct. 13th
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 7.4L 7441cc 454ci V8 (4.25x4.00; 108.0x101.6); Transmission Code: THM400; Transmission Speeds: 3;
Engine Base: 7.4L 7441cc 454ci V8 (4.25x4.00; 108.0x101.6); Transmission Code: THM400; Transmission Speeds: 3;
Vehicle Fitment Notes:
Exhaust stock and reorder
Exhaust stock and reorder






Auto Trans Vacuum Modulator
$108.02 CAD
In Stock
Condition: New
Ships: Monday Oct. 13th
Pick-Up: Ready in 1 Hour Monday Oct. 13th
Pick-Up: Ready in 1 Hour Monday Oct. 13th
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 7.4L 7439cc 454ci V8 (4.25x4.00; 108.0x101.6); Transmission Code: THM400; Transmission Speeds: 3;
Engine Base: 7.4L 7439cc 454ci V8 (4.25x4.00; 108.0x101.6); Transmission Code: THM400; Transmission Speeds: 3;
Vehicle Fitment Notes:
Alternate Number
Alternate Number






Auto Trans Vacuum Modulator
$108.02 CAD
In Stock
Condition: New
Ships: Monday Oct. 13th
Pick-Up: Ready in 1 Hour Monday Oct. 13th
Pick-Up: Ready in 1 Hour Monday Oct. 13th
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 7.4L 7441cc 454ci V8 (4.25x4.00; 108.0x101.6); Transmission Code: THM400; Transmission Speeds: 3;
Engine Base: 7.4L 7441cc 454ci V8 (4.25x4.00; 108.0x101.6); Transmission Code: THM400; Transmission Speeds: 3;
Vehicle Fitment Notes:
Alternate Number
Alternate Number



Auto Trans Vacuum Modulator
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 4.1L 4097cc 250ci L6 (3.88x3.53; 98.4x89.7);
Engine Base: 4.1L 4097cc 250ci L6 (3.88x3.53; 98.4x89.7);
Vehicle Fitment Notes:
Black screw Auto Trans Vacuum Modulator Use until inventory is depleted
Black screw Auto Trans Vacuum Modulator Use until inventory is depleted



Auto Trans Vacuum Modulator
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 4.1L 4098cc 250ci L6 (3.88x3.53; 98.4x89.7);
Engine Base: 4.1L 4098cc 250ci L6 (3.88x3.53; 98.4x89.7);
Vehicle Fitment Notes:
Black screw Auto Trans Vacuum Modulator Use until inventory is depleted
Black screw Auto Trans Vacuum Modulator Use until inventory is depleted



Auto Trans Vacuum Modulator
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 4.8L 292ci L6;
Engine Base: 4.8L 292ci L6;
Vehicle Fitment Notes:
Black screw Auto Trans Vacuum Modulator Use until inventory is depleted
Black screw Auto Trans Vacuum Modulator Use until inventory is depleted



Auto Trans Vacuum Modulator
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 4.8L 4786cc 292ci L6 (3.88x4.13; 98.4x104.8);
Engine Base: 4.8L 4786cc 292ci L6 (3.88x4.13; 98.4x104.8);
Vehicle Fitment Notes:
Black screw Auto Trans Vacuum Modulator Use until inventory is depleted
Black screw Auto Trans Vacuum Modulator Use until inventory is depleted



Auto Trans Vacuum Modulator
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 4.8L 4801cc 292ci L6 (3.88x4.13; 98.4x104.8);
Engine Base: 4.8L 4801cc 292ci L6 (3.88x4.13; 98.4x104.8);
Vehicle Fitment Notes:
Black screw Auto Trans Vacuum Modulator Use until inventory is depleted
Black screw Auto Trans Vacuum Modulator Use until inventory is depleted



Auto Trans Vacuum Modulator
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5);
Engine Base: 5.7L 350ci V8 (4.00x3.48; 101.6x88.5);
Vehicle Fitment Notes:
Black screw Auto Trans Vacuum Modulator Use until inventory is depleted
Black screw Auto Trans Vacuum Modulator Use until inventory is depleted



Auto Trans Vacuum Modulator
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 7.4L 454ci V8;
Engine Base: 7.4L 454ci V8;
Vehicle Fitment Notes:
Black screw Auto Trans Vacuum Modulator Use until inventory is depleted
Black screw Auto Trans Vacuum Modulator Use until inventory is depleted



Auto Trans Vacuum Modulator
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 7.4L 7439cc 454ci V8 (4.25x4.00; 108.0x101.6);
Engine Base: 7.4L 7439cc 454ci V8 (4.25x4.00; 108.0x101.6);
Vehicle Fitment Notes:
Black screw Auto Trans Vacuum Modulator Use until inventory is depleted
Black screw Auto Trans Vacuum Modulator Use until inventory is depleted



Auto Trans Vacuum Modulator
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 7.4L 7441cc 454ci V8 (4.25x4.00; 108.0x101.6);
Engine Base: 7.4L 7441cc 454ci V8 (4.25x4.00; 108.0x101.6);
Vehicle Fitment Notes:
Black screw Auto Trans Vacuum Modulator Use until inventory is depleted
Black screw Auto Trans Vacuum Modulator Use until inventory is depleted