GMC C25 Automatic Transmission Parts

Your One-Stop Shop For Trusted GMC C25 Automatic Transmission Parts

If you’re in search of GMC C25 Automatic Transmission Parts aftermarket or OEM parts, consider your search over! Advance Auto Parts carries 26 Automatic Transmission Parts from top brands with prices ranging from $4.29 to $306.99.

Beyond great prices, we stock trusted brands manufacturing all types of Automatic Transmission Parts for your GMC C25.

And don’t forget to read customer reviews across all Automatic Transmission Parts categories in our catalog. Buy with confidence by leveraging past customer experiences of our aftermarket and OEM parts.

At Advance Auto Parts, we don’t think top quality Automatic Transmission Parts have to cost top dollar, and we prove it. Browse our top GMC C25 Automatic Transmission Parts below, order online to ship to your home, or head into your nearest Advance Auto Parts location to get started.

Please Select your Vehicle to See Exact Fit Parts

Essential GMC C25 Automatic Transmission Parts

Mr. Gasket – A/Tdipstick (Part No.9703G)

A/Tdipstick

from

$98.99
Billet aluminum handle with flexible braded steel tube mounts to the firewall. 29-3/4 inch long.

Product Features:
  • Braided Stainless Steel
  • Firewall Mounting
  • Includes Oil Fill Tube
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B & M – Governor Recalibration Kit For TH-700R4, TH-400 and TH-350 Transmission (Part No.20248)

Governor Recalibration Kit For TH-700R4, TH-400 and TH-350 Transmission

from

$128.99
This kit allows you to adjust the shift points of your transmission after it is installed in your vehicle. The Governor Recalibration Kit is very useful if you have a vehicle that is very light; has a low rear-end gear ratio.

Product Features:
  • Adjust Shift Points Of Transmission
  • Useful For Light Vehicles
  • For Low Rear End Gear Ratio
  • Or Useful If It Is Conversion
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Dorman – Clutch Pilot Bushing .593 In. x 1.09 In. Type A, Length .750 In. (sold by each) (Part No.690-014)

Clutch Pilot Bushing .593 In. x 1.09 In. Type A, Length .750 In. (sold by each)

from

$5.99
This clutch pilot bushing is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:
  • Direct replacement – this clutch pilot bushing matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution – this bushing is a reliable replacement for an original part that has failed due to fatigue
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
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ATP – Automatic Transmission Front Pump Bushing (Part No.CB-4)

Automatic Transmission Front Pump Bushing

from

$11.79
ATP Transmission Components are exact fit, no compromise replacement parts
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ATP – AT CONTR SOLENOID (Part No.SE-1)

AT CONTR SOLENOID

from

$118.99
AT CONTR SOLENOID

ATP – Automatic Transmission Fluid Filler Tube Seal (Part No.JO-15)

Automatic Transmission Fluid Filler Tube Seal

from

$4.29
Automatic Transmission Fluid Filler Tube Seal

ATP – Automatic Transmission Oil Pump O-Ring (Part No.SO-21)

Automatic Transmission Oil Pump O-Ring

from

$9.59
ATP Transmission Seals And Gaskets are exact fit, no compromise replacement parts
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Hooker BlackHeart – Transmission Cross member (Part No.BHS550)

Transmission Cross member

from

$306.99
The Hooker BlackHeart BHS550 is a purpose-built transmission cross member designed for GM LS and Gen V LT engine swaps into classic GM trucks and SUVs. It’s engineered to support 700R4, 4L60, 4L60E, and 4L65E transmissions, offering a bolt-in solution with excellent exhaust clearance and proper driveline geometry.

Product Features:
  • Revised Design with Lower Pricing
  • Fits 1973-1987 C10/15 2WD, 1979-1987 C20 2WD & 1973-1982 Blazer/Jimmy 2WD
  • LS/Gen-V LT Swap Transmission Cross members
  • Designed for Use with All 1973-1987 C10 LS/Gen-V LT Swap Components
  • Use with BHS540 Engine Mounting Brackets (Also Works with 12621HKR)
  • Designed Using CAD Modeling/FEA Analysis for Optimal Strength, Weight, Safety & Appearance
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Hooker BlackHeart – Transmission Cross member (Part No.BHS549)

Transmission Cross member

from

$306.99
The Hooker BlackHeart BHS549 is a heavy-duty transmission cross member engineered for GM LS and Gen V LT engine swaps into classic GM trucks and SUVs (1973-1987 C10/C20, 1973-1982 Blazer/Jimmy). It’s specifically designed to support 4L80E and 4L85E transmissions, offering bolt-in installation, optimal driveline angles, and maximum exhaust clearance.

Product Features:
  • Revised Design with Lower Pricing
  • Fits 1973-1987 C10/15 2WD, 1979-1987 C20 2WD & 1973-1982 Blazer/Jimmy 2WD
  • LS/Gen-V LT Swap Transmission Cross members
  • Designed for Use with All 1973-1987 C10 LS/Gen-V LT Swap Components
  • Use with BHS540 Engine Mounting Brackets (Also Works with 12621HKR)
  • Designed Using CAD Modeling/FEA Analysis for Optimal Strength, Weight, Safety & Appearance
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ATP – ATP Automatic Transmission Detent Cable (Part No.Y-100)

ATP Automatic Transmission Detent Cable

from

$23.99
Detent cables connect the throttle mechanism to the transmission. Old cables can bind, break, or just become sluggish. The best repair is to replace the old cable with a new one. ATP Detent cables are designed to fit And function just like the original part to ensure durability And long life.

Product Features:
  • Includes brackets, grommets, etc to match original
  • Helps transmission determine ideal downshift
  • Improves vehicle performance
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ATP – Automatic Transmission Universal Detent Cable 28 To 48 Inches (Part No.Y-754)

Automatic Transmission Universal Detent Cable 28 To 48 Inches

from

$49.99
Detent cables connect the throttle mechanism to the transmission. Old cables can bind, break, or just become sluggish. The best repair is to replace the old cable with a new one. Pioneer detent cables are designed to fit and function just like the original part to ensure durability and long life.

Product Features:
  • Includes brackets, grommets, etc to match original
  • Fits many GM transmissions
  • Adjustable
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B & M – Cable Bracket (Part No.30498)

Cable Bracket

from

$33.99
Cable Bracket, GM (Bandit style shifters only) APPLICATION: For TH-400, 350, 250, 200, 700R4, 200-4R with 80797, 80798 or 81050 shifter.

Product Features:
  • Shifter Service Parts
  • Steel
  • Natural Finish
  • Sold individually
  • Replacement for Bandit shifters
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ATP – Automatic Transmission Clutch Plate (Part No.SC-29)

Automatic Transmission Clutch Plate

from

$14.99
ATP Transmission Components are exact fit, no compromise replacement parts
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ATP – Automatic Transmission Clutch Plate (Part No.JC-57)

Automatic Transmission Clutch Plate

from

$13.79
ATP Transmission Components are exact fit, no compromise replacement parts
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ATP – Automatic Transmission Clutch Plate (Part No.SC-30)

Automatic Transmission Clutch Plate

from

$7.49
ATP Transmission Components are exact fit, no compromise replacement parts
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ATP – Automatic Transmission Band (Front) (Part No.JX-58)

Automatic Transmission Band (Front)

from

$29.99
ATP Transmission Components are exact fit, no compromise replacement parts
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Carquest Premium – Automatic Transmission Modulator Valve (Part No.VMC1023)

Automatic Transmission Modulator Valve

from

$48.99
The transmission modulator valve is a vacuum operated mechanical device located on the transmission case. This valve will have a actuator rod extended into the transmission valve body inside the transmission which will control the flow of transmission fluid within the transmission to place the transmission in the most optimal forward gear selection.

Product Features:
  • Application matched component ensures the transmission gear position system can be returned to like new condition.
  • Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
  • This part will look and function just like the original unit being replaced.
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ATP – AT MODULATOR VALVE (Part No.JX-76)

AT MODULATOR VALVE

from

$51.99
AT MODULATOR VALVE

Pro-King – Automatic Transmission Vacuum Modulator (Part No.MD-48)

Automatic Transmission Vacuum Modulator

from

$21.99
Fully adjustable vacuum modulator to maintain accurate shift points.

Product Features:
  • Meets or exceeds OE fit, form and function
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Pro-King – Automatic Transmission Vacuum Modulator (Part No.MD-28)

Automatic Transmission Vacuum Modulator

from

$33.99
Fully adjustable vacuum modulator to maintain accurate shift points.

Product Features:
  • Meets or exceeds OE specifications
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B & M – Kickdown Switch Kit For TH400 Transmission (Part No.20297)

Kickdown Switch Kit For TH400 Transmission

from

$99.99
When swapping the TH400 transmission into any vehicle, this kit makes installation of the transmission’s kickdown feature a snap. This switch mounts to either a TH700R4, TH200, TH200-R4 or TH350 throttle cable bracket.

Product Features:
  • Allows High Speed Cruise
  • Cruise In Overdrive
  • Prevents Part Throttle Kickdown
  • Quick Installation
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Automatic Transmission Parts Brands You Can Trust For Your GMC C25

7 trusted brands of Automatic Transmission Parts line our shelves, ready to help keep your GMC C25 running smooth. Below are some of the most popular brands and their top Automatic Transmission Parts offerings:

Most Purchased GMC C25 Automatic Transmission Parts from Pro-King

When you buy the most frequently purchased Pro-King brand Automatic Transmission Parts, you can be confident it will be the right part for your GMC C25. Here are the Pro-King Automatic Transmission Parts Advanced Auto customers buy the most:
Automatic Transmission Vacuum Modulator
from $21.99
(11)
Automatic Transmission Vacuum Modulator
Transmission Modulator Valves
ATP Automatic Transmission Detent Cable
from $23.99
(1)
ATP Automatic Transmission Detent Cable
Detent Cables
Automatic Transmission Vacuum Modulator
from $33.99
(11)
Automatic Transmission Vacuum Modulator
Transmission Modulator Valves

FAQs for GMC C25 Automatic Transmission Parts

What are the most purchased Automatic Transmission Parts for the GMC C25?

Out of 26 Automatic Transmission Parts for the GMC C25, the most popular in our inventory are:
ATP Automatic Transmission Detent Cable
from $23.99
(1)
ATP Automatic Transmission Detent Cable
Detent Cables
Automatic Transmission Fluid Filler Tube Seal
from $4.29
(2)
Automatic Transmission Fluid Filler Tube Seal
Automatic Transmission Fluid Filler Tube Seals
Automatic Transmission Detent Cable
from $32.99
This product is not rated
Automatic Transmission Detent Cable
Detent Cables

What are the top-rated GMC C25 Automatic Transmission Parts?

Top-rated Automatic Transmission Parts for your GMC C25 based on customer reviews/ratings are:
Modulator
from $49.99
(2)
Modulator
“Great product. Worked perfectly”