Product Overview

The transmission mount, OEM number 20957835, is the rear transmission mount fitted to the Chevrolet Volt, model years 2011-2015, and the Cadillac ELR, model years 2014-2016, both with the 1.4L engine. Since this mount covers both the Volt and the closely related ELR, which share the same extended-range electric powertrain, it's a steady part to stock for anyone servicing these vehicles.

Worn or failing units typically show up as excessive vibration felt through the cabin, a clunking noise when shifting into gear, or noticeable powertrain movement under acceleration or braking. GSK Auto manufactures this transmission mount to OEM specification at our Ningbo, China facility, with every unit tested before packing. We supply at wholesale volume with low MOQ and support private label packaging, with our team available to confirm fitment before shipping.

Replacement OEM Numbers

Cross-Reference OEM Number

22781269, 22742903, 23291455

(Confirm against your VIN or chassis code before ordering - GM technical bulletins note this mount is sometimes replaced together with both transmission fluid cooler lines as part of the same repair, so it's worth confirming with your customer whether those additional parts are also needed.)

What Is a Transmission Mount?

Function: The transmission mount secures the transmission to the vehicle's frame or subframe while absorbing vibration and movement generated during gear changes and powertrain torque transfer, keeping the transmission positioned correctly and isolating vibration from the cabin.

Working Principle: A rubber mounting element between the transmission housing and the frame flexes to absorb torque reaction and vibration as the powertrain shifts gears and transfers power, while still holding the transmission securely in position at the rear of the powertrain assembly.

Importance: On the Volt and ELR's unique extended-range electric powertrain, a failing rear transmission mount allows excess movement that can be felt throughout the vehicle and, per GM's own service bulletins, is sometimes tied to fluid cooler line issues that should be addressed in the same repair.

Common Failures & Signs: Rubber material cracking, tearing, or breaking down from age and heat exposure. Excessive vibration felt through the cabin, especially during gear changes. Clunking or knocking noise when shifting into gear. Noticeable powertrain movement visible under the vehicle during acceleration or braking.

Key Features

OEM-standard fitment - matches factory mount dimensions and bracket configuration for the 20957835 application.

Precision manufacturing - rubber compound formulated for vibration absorption and durability.

Long service life - built to handle sustained daily-driving load and transmission torque.

Excellent fitment - direct bolt-in replacement, no modification required.

Corrosion resistance - metal bracket components resist moisture and road-salt exposure.

Reliable performance - consistent vibration isolation matching factory calibration.

Benefits

Importers - one part number covers both Chevrolet Volt and Cadillac ELR demand, simplifying inventory.

Wholesalers - steady demand from GM's extended-range electric vehicle platform.

Repair Shops - OEM-spec fitment reduces comeback risk on transmission mount replacement jobs.

Distributors - private label packaging available for building a branded catalog.

End Customers - restored smooth shifting and reduced vibration.

Packaging & Shipping

Standard export packaging, sized for a transmission mount component. Customized packaging available for distributor branding. OEM-style and private label printing on request. Container loading handled directly, with mixed-SKU consolidation for smaller orders. Worldwide shipping to Europe, North America, South America, the Middle East, Africa, and Southeast Asia.

Why Choose GSK Auto

GSK Auto manufactures factory-direct, keeping pricing tied to production cost. This transmission mount is built to OEM specification and tested before packing. We support low MOQ, private label packaging, and worldwide shipping, with our technical team available to confirm fitment before you order.

Call to Action

Sourcing rear transmission mounts for the Chevrolet Volt or Cadillac ELR? Contact GSK Auto for a wholesale quote, catalog, or OEM/private label cooperation.