# TMC 78-TM1001 Rear Shock Absorber for 2017-2018 Cadillac XT5, GMC Acadia

### Performance Overview

The TMC 78-TM1001 Shock Absorber is designed as a direct replacement part for compatible Cadillac XT5, GMC Acadia applications. It is built to support reliable performance, proper fitment, and straightforward installation when replacing a worn or damaged component.

**Installation Position:** Rear

### Key Features

-   Precision engineered with G-Force technology for the ultimate in safety and performance
-   Working tube made of SteelPro™ alloy steel to provide superior strength
-   toughness and impact resistance while maintaining unmatched ductility
-   Surface-treated provides abrasive and contaminant protection while preventing rust
-   Piston rods made of S45C medium carbon steel for precision and wear resistance

### Interchange Numbers

**Interchange / Cross Reference Part Numbers:** 346567, 3440145, 23420388, 84320572, 84320573, 84320575, 84320576, TM1001, 251420

Please compare these interchange numbers with your original part number and confirm vehicle compatibility before ordering.

### Vehicle Fitment

Review the vehicle fitment list below to confirm this part matches your vehicle before purchase.

-   2017 Cadillac XT5
-   2018 Cadillac XT5
-   2017 GMC Acadia
-   2018 GMC Acadia

### Vehicle Fitment Table

   

Year

Make

Model

Position

2017

Cadillac

XT5

Rear

2018

Cadillac

XT5

Rear

2017

GMC

Acadia

Rear

2018

GMC

Acadia

Rear

### FAQ

**Will this fit a 2017 Cadillac XT5?**  
Yes, this Shock Absorber fits the vehicles listed in the Vehicle Fitment section above. Please confirm the year, make, model, and position before ordering.

**What position does this part fit?**  
This part is listed for the Rear position on compatible vehicles.

**Can I use the interchange numbers to confirm compatibility?**  
Yes. Compare the interchange or cross-reference numbers shown above with your original part number, then verify the vehicle fitment before ordering.

**Is professional installation recommended?**  
Professional installation is recommended to help ensure proper fit, safe operation, and correct system performance.

### Common Searches

-   Shock Absorber for Cadillac XT5, GMC Acadia
-   Rear Shock Absorber for 2017 Cadillac XT5
-   TMC 78-TM1001 Shock Absorber
-   replacement 78-TM1001 Shock Absorber
-   2017-2018 Cadillac XT5, GMC Acadia Shock Absorber

## Details

- **Price:** 45.22 CAD
- **Vendor:** TMC
- **Type:** Shock Absorber
- **Tags:** 2017 Cadillac XT5, 2017 GMC Acadia, 2017-2018 Cadillac XT5, 2017-2018 GMC Acadia, 2018 Cadillac XT5, 2018 GMC Acadia, 23420388, 251420, 3440145, 346567, 78-TM1001, 84320572, 84320573, 84320575, 84320576, Absorber, AI Readable Fitment, Cadillac XT5, GMC Acadia, GMC Acadia Shock Absorber, Rear, Rear Shock Absorber for 2017 Cadillac XT5, replacement 78-TM1001 Shock Absorber, replacement auto part, Shock Absorber, Shock Absorber fitment, Shock Absorber for Cadillac XT5, Shocks, TM1001, TMC, TMC 78-TM1001 Shock Absorber, TMC Shock Absorber, vehicle fitment

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 45.22 CAD | In stock |

## Images

- TMC_Shock Absorber_78-TM1001

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/rear-shock-absorber-for-2017-2018-cadillac-xt5-gmc-acadia-78-tm1001)
> Updated: 2026-06-02