1977 GMC C25 Auto Trans Vacuum Modulators
Save up to 40% on original replacement 1977 GMC C25 Auto Trans Vacuum Modulators. Navigate our online catalogue to find Auto Trans Vacuum Modulators and other parts designed specifically to fit a 1977 GMC C25.
Auto Trans Vacuum Modulator
$109.24
In Stock
Ships: in 3-4 Business Days
Pick-Up: in 3-4 Business Days
Pick-Up: in 3-4 Business Days
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 7.4L 454ci V8 (4.25x4.00; 108.0x101.6); Transmission Code: THM400; Transmission Speeds: 3;
Engine Base: 7.4L 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
Limited Stock
Ships: Monday Sep. 22nd
Pick-Up: Ready in 1 Hour Monday Sep. 22nd
Pick-Up: Ready in 1 Hour Monday Sep. 22nd
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 7.4L 454ci V8 (4.25x4.00; 108.0x101.6); Transmission Code: THM400; Transmission Speeds: 3;
Engine Base: 7.4L 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
In Stock
Ships: Monday Sep. 22nd
Pick-Up: Ready in 1 Hour Monday Sep. 22nd
Pick-Up: Ready in 1 Hour Monday Sep. 22nd
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 7.4L 454ci V8 (4.25x4.00; 108.0x101.6); Transmission Code: THM400; Transmission Speeds: 3;
Engine Base: 7.4L 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
$57.72
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 6.6L 400ci V8 (4.13x3.76; 104.8x95.5); Transmission Code: THM350;
Engine Base: 6.6L 400ci V8 (4.13x3.76; 104.8x95.5); Transmission Code: THM350;
Vehicle Fitment Notes:
w/ Blue Stripe
w/ Blue Stripe
Auto Trans Vacuum Modulator
$58.68
Call For Availability
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 6.6L 400ci V8 (4.13x3.76; 104.8x95.5); Transmission Code: THM350;
Engine Base: 6.6L 400ci V8 (4.13x3.76; 104.8x95.5); Transmission Code: THM350;
Vehicle Fitment Notes:
w/ Blue Stripe
w/ Blue Stripe
Auto Trans Vacuum Modulator
$58.68
Call For Availability
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle fitment:
Engine Base: 6.6L 400ci V8 (4.13x3.76; 104.8x95.5); Transmission Code: THM350;
Engine Base: 6.6L 400ci V8 (4.13x3.76; 104.8x95.5); Transmission Code: THM350;
Vehicle Fitment Notes:
with blue stripe
with blue stripe
Auto Trans Vacuum Modulator
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 4.1L 250ci L6 (3.68x3.91; 93.5x99.3);
Engine Base: 4.1L 250ci L6 (3.68x3.91; 93.5x99.3);
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
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 4.8L 292ci L6 (3.88x4.13; 98.4x104.8);
Engine Base: 4.8L 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
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 5.0L 305ci V8 (3.74x3.48; 94.9x88.4);
Engine Base: 5.0L 305ci V8 (3.74x3.48; 94.9x88.4);
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
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
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 6.6L 400ci V8 (4.13x3.76; 104.8x95.5);
Engine Base: 6.6L 400ci V8 (4.13x3.76; 104.8x95.5);
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
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 7.4L 454ci V8 (4.25x4.00; 108.0x101.6);
Engine Base: 7.4L 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
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 4.1L 250ci L6 (3.68x3.91; 93.5x99.3);
Engine Base: 4.1L 250ci L6 (3.68x3.91; 93.5x99.3);
Vehicle Fitment Notes:
No color code Auto Trans Vacuum Modulator Use until inventory is depleted
No color code 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
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 4.8L 292ci L6 (3.88x4.13; 98.4x104.8);
Engine Base: 4.8L 292ci L6 (3.88x4.13; 98.4x104.8);
Vehicle Fitment Notes:
No color code Auto Trans Vacuum Modulator Use until inventory is depleted
No color code 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
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 5.0L 305ci V8 (3.74x3.48; 94.9x88.4);
Engine Base: 5.0L 305ci V8 (3.74x3.48; 94.9x88.4);
Vehicle Fitment Notes:
No color code Auto Trans Vacuum Modulator Use until inventory is depleted
No color code 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
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:
No color code Auto Trans Vacuum Modulator Use until inventory is depleted
No color code 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
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 6.6L 400ci V8 (4.13x3.76; 104.8x95.5);
Engine Base: 6.6L 400ci V8 (4.13x3.76; 104.8x95.5);
Vehicle Fitment Notes:
No color code Auto Trans Vacuum Modulator Use until inventory is depleted
No color code 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
Required Per Vehicle: 1
Made in USA
Vehicle fitment:
Engine Base: 7.4L 454ci V8 (4.25x4.00; 108.0x101.6);
Engine Base: 7.4L 454ci V8 (4.25x4.00; 108.0x101.6);
Vehicle Fitment Notes:
No color code Auto Trans Vacuum Modulator Use until inventory is depleted
No color code Auto Trans Vacuum Modulator Use until inventory is depleted