GMC K15 Automatic Transmission Kits

Your One-Stop Shop For Trusted GMC K15 Automatic Transmission Kits

If you’re in search of GMC K15 Automatic Transmission Kits aftermarket or OEM parts, consider your search over! Advance Auto Parts carries 20 Automatic Transmission Kits from top brands with prices ranging from $62.99 to $389.99.

Beyond great prices, we stock trusted brands manufacturing all types of Automatic Transmission Kits for your GMC K15. Of the 4 OEM and aftermarket parts brands we carry, some of the most popular are Pro-King, ATP, and B & M.

And don’t forget to read customer reviews across all Automatic Transmission Kits 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 Kits have to cost top dollar, and we prove it. Browse our top GMC K15 Automatic Transmission Kits below, order online to ship to your home, or head into your nearest Advance Auto Parts location to get started.

Essential GMC K15 Automatic Transmission Kits

Pro-King – Automatic Transmission Basic Rebuild Kit (Part No.KB-828)

Automatic Transmission Basic Rebuild Kit

from

$84.99
This Basic Rebuild Kit contains a complete gasket Kit and friction set. Each Rebuild Kit contains only the highest quality parts that meet or exceed OE specifications.

Product Features:
  • Does not include steels or filter
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ATP – AT MASTER REPAIR KIT (Part No.JM-9)

AT MASTER REPAIR KIT

from

$253.99
AT MASTER REPAIR KIT

ATP – AT MASTER REPAIR KIT (Part No.SM-9)

AT MASTER REPAIR KIT

from

$259.99
AT MASTER REPAIR KIT

Pro-King – Automatic Transmission Deluxe Rebuild Kit (Part No.KS-15)

Automatic Transmission Deluxe Rebuild Kit

from

$222.99
One of the most complete rebuild kits in the automatic transmission industry today. Each Rebuild Kit contains only the highest quality parts that meet or exceed OE specifications.

Product Features:
  • Include steels, frictions, gaskets, and filter
  • Includes Band and Modulator (if applicable)
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B & M – Master Overhaul Kit, TH350 Transmission (Part No.21042)

Master Overhaul Kit, TH350 Transmission

from

$327.99
The Master Racing overhaul kits are supplied with all of the gaskets, seals, bushings, and friction material required for a complete high performance or racing trans overhaul. Does not come with transbrake gaskets or components.

Product Features:
  • Complete High Perf. Or Racing Trans. Overhaul
  • Includes Only OEM Valvebody Gaskets
  • Instructions Not Included
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Pro-King – Automatic Transmission Basic Rebuild Kit (Part No.KB-838)

Automatic Transmission Basic Rebuild Kit

from

$141.99
This Basic Rebuild Kit contains a complete gasket Kit and friction set. Each Rebuild Kit contains only the highest quality parts that meet or exceed OE specifications.

Product Features:
  • Does not include steels or filter
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Pro-King – Automatic Transmission Deluxe Rebuild Kit (Part No.KS-17)

Automatic Transmission Deluxe Rebuild Kit

from

$232.99
One of the most complete rebuild kits in the automatic transmission industry today. Each Rebuild Kit contains only the highest quality parts that meet or exceed OE specifications.

Product Features:
  • Include steels, frictions, gaskets, and filter
  • Includes Band and Modulator (if applicable)
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ATP – AT MSTR REP KIT PLUS (Part No.JMS-9)

AT MSTR REP KIT PLUS

from

$368.99
AT MSTR REP KIT PLUS

ATP – AT BANNER KIT (Part No.JM-10)

AT BANNER KIT

from

$168.99
AT BANNER KIT

ATP – AT OVERHAUL KIT (Part No.SGS-28)

AT OVERHAUL KIT

from

$96.99
AT OVERHAUL KIT

ATP – AT BANNER KIT (Part No.SM-11)

AT BANNER KIT

from

$193.99
AT BANNER KIT

ATP – AT OVERHAUL KIT (Part No.JGS-52)

AT OVERHAUL KIT

from

$76.99
AT OVERHAUL KIT

ATP – AT OVERHAUL KIT (Part No.SGS-27)

AT OVERHAUL KIT

from

$83.99
AT OVERHAUL KIT

B & M – Transpak For 65-87 TH400 Transmission (Part No.20228)

Transpak For 65-87 TH400 Transmission

from

$141.99
The B&M Transpak has all the features in the Shift Improver Kit, plus it provides additional driver manual control. Retain full automatic features and standard shift points with selector in Drive.

Product Features:
  • Recalibrate Auto. Transmission
  • Optimum Performance
  • Select Your App. Mode
  • Improves Transmission Life
  • Trans. Removal Not Required
  • Downshift At Any Speed
  • Great For Trailer Towing
  • For Heavy Loads Driving Downhill
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B & M – Transpak For 68-81 TH 350 Transmission (Part No.30228)

Transpak For 68-81 TH 350 Transmission

from

$141.99
The B&M Transpak has all the features in the Shift Improver Kit, plus it provides additional driver manual control. Retain full automatic features and standard shift points with selector in Drive.

Product Features:
  • Recalibrate Auto. Transmission
  • Optimum Performance
  • Select Your App. Mode
  • Improves Transmission Life
  • Trans. Removal Not Required
See More

B & M – Shift Improver Kit For 68-81 TH-350 Transmission (Part No.30262)

Shift Improver Kit For 68-81 TH-350 Transmission

from

$62.99
HEAVY DUTY-Firm positive shifts without loss of driver comfort for improved performance in all street vehicles. STREET/STRIP-Positive shifts for high performance street use or for competitive events. Hardest, quickest possible shift.

Product Features:
  • Provides Crisp Shifts
  • On Any Stock Automatic Transmission
  • Eliminates Soft/Sluggish Shift
  • Eliminates Shift Overlap
  • Eliminate Clutch and Band Wear
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Automatic Transmission Kits Brands You Can Trust For Your GMC K15

4 trusted brands of Automatic Transmission Kits line our shelves, ready to help keep your GMC K15 running smooth. Below are some of the most popular brands and their top Automatic Transmission Kits offerings:

Most Purchased GMC K15 Automatic Transmission Kits from Pro-King

When you buy the most frequently purchased Pro-King brand Automatic Transmission Kits, you can be confident it will be the right part for your GMC K15. Here are the Pro-King Automatic Transmission Kits Advanced Auto customers buy the most:
Automatic Transmission Deluxe Rebuild Kit
from $232.99
(2)
Automatic Transmission Deluxe Rebuild Kit
Transmission Master Repair Kits
Automatic Transmission Deluxe Rebuild Kit
from $222.99
(1)
Automatic Transmission Deluxe Rebuild Kit
Transmission Master Repair Kits
Automatic Transmission Basic Rebuild Kit
from $141.99
This product is not rated
Automatic Transmission Basic Rebuild Kit
Transmission Master Repair Kits

FAQs for GMC K15 Automatic Transmission Kits

What are the most purchased Automatic Transmission Kits for the GMC K15?

Out of 20 Automatic Transmission Kits for the GMC K15, the most popular in our inventory are:
Automatic Transmission Basic Rebuild Kit
from $84.99
This product is not rated
Automatic Transmission Basic Rebuild Kit
Transmission Master Repair Kits
Automatic Transmission Basic Rebuild Kit
from $141.99
This product is not rated
Automatic Transmission Basic Rebuild Kit
Transmission Master Repair Kits
AT BANNER KIT
from $168.99
This product is not rated
AT BANNER KIT
Transmission Rebuild Kits