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Home > GMC > C2500 Truck > Leaf Spring Shackles and Bracket Repair > 1989-2000 GMC C2500 Truck Leaf Spring Insulator Insert (Set of 4)

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1989 - 2000 GMC C2500 Truck Leaf Spring Insulator Insert (Set of 4)


In Stock (Ships same day for orders placed by 3 PM ET)

List Price:$54.95

Our Price: $30.45
 (You Save $24.50)

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Part Number: 1ABMK00028

Welcome Message from 1A Auto

These rear leaf spring insulator inserts are aftermarket parts that are designed to replace broken or missing leaf spring insulators.

If every time you slow down, make a turn, or drive over rough road surfaces, you hear a popping sound, leaf spring slap, or a clunking noise towards the back of your truck, your insulating inserts could be the cause. These inserts are located on the leading and trailing ends of the overload spring (second stage leaf), as shown in the attached picture. If you look, you may find that these inserts may have broken apart from wear or even have fallen out. If this is the case, why not replace them now and stop that annoying noise coming from your leaf springs!


  • Comes as a SET of 4
    • Fits both LH (Driver Side) & RH (Passenger Side)
  • Kit includes:
    • (4) - Insulator Inserts
    • (4) - Locating Tabs
  • Will replace both sides of the insulator inserts on the LH (Driver Side) & RH (Passenger Side) REAR Leaf Springs
  • Replaces dealer part numbers: 15053476, 15247030, 15604067, 20870046
  • Built to strict quality control standards
  • Made to fit precisely
  • Will fit 2WD or 4WD models

NOTE: This kit is for the following GM TSBs:

1) #03-03-09-002B - Rear Leaf Spring Slap or Clunk Noise (Replace Spring Inserts)
2) #06-08-61-003A - Underbody Pop or Clunk Type Noise While Turning or Driving on Uneven Road Surfaces (Install Body Mount Insulator)

This kit has enough parts to do both rear leaf springs. If you need to do only one side, please check our other listings.

1 Year Warranty

This item is backed by a 1 Year Manufacturers Warranty. In the event this item should fail during intended use, we will exchange the part free of charge (excludes shipping charges) for the original purchaser. Please keep your invoice for proof of this warranty.

This part replaces:
  • DORMAN #: 31067 x2

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