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2020 GMC Terrain Radiator Replacement Cost in Saint Louis, MO

Medium
100,000–150,000 miles or 8–10 years
Updated July 2026

If you need a radiator replacement on your 2020 GMC Terrain in Saint Louis, MO, expect to pay between $454 and $691 at a local shop. That breaks down to $200–$302 for parts and $254–$389 for labor at Saint Louis's average rate of $102.0/hour. Read on for a full cost breakdown, money-saving tips, and what to watch out for.

Radiator Replacement2020 GMC Terrain in Saint Louis, MO

$454$691

Estimated total cost at a shop in Saint Louis

Parts$200–$302

44% of total

Labor$254–$389

56% of total

Time

33.9 hrs

Shop Rate

$102/hr

DIY Saves

~$137

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What's Included in This Repair

  • 1Flush and drain coolant
  • 2Remove radiator hoses and connections
  • 3Remove and replace radiator
  • 4Fill with fresh coolant
  • 5Burp air from cooling system
Typical Lifespan:
100,000–150,000 miles or 8–10 years
Difficulty:
Medium

Warning Signs You Need This Repair

  • Engine overheating warning
  • Green or orange coolant puddle under car
  • Coolant level dropping regularly
  • White steam from under hood

High — driving with a leaking radiator destroys the engine

What Drives the Cost in Saint Louis?

Labor Market: Saint Louis, MO

Saint Louis is a mid-range labor market, with shops charging $102.0–$122.0/hour for labor. For this radiator, you'll pay $254–$389 in labor alone — accounting for approximately 56% of your total bill. Independent shops in Saint Louis typically run 20–35% cheaper than dealerships.

2020 GMC Terrain Notes

American-made vehicles like the 2020 GMC Terrain benefit from widely available aftermarket parts, keeping costs competitive. Parts for this repair typically run $200–$302 and are stocked by most auto parts stores. The large network of shops familiar with GMC vehicles also keeps labor competition strong.

DIY vs. Paying a Shop

DIY vs. Professional: Save ~$137

Confident DIYers can save $137+ by purchasing parts (≈$317) and doing the labor themselves. Moderate DIY. Main challenge is accessing hose clamps and draining coolant cleanly. Budget 2–3 hours. Budget 3–4 hours and watch a make-specific YouTube tutorial before starting. Always use OBD-II scanner to confirm the diagnosis before buying parts.

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5 Ways to Save Money on This Repair

  1. 1Get quotes from at least 3 shops in Saint Louis — prices vary by 25–40% between dealers and independents.
  2. 2Ask specifically if they'll use OEM or aftermarket parts. Aftermarket is fine for most components except radiator on luxury brands.
  3. 3Check if your extended warranty or car insurance covers this repair — some aftermarket warranties cover radiator.
  4. 4If your car is near the end of its useful life, compare repair cost ($454–$691) against the vehicle's value.
  5. 5Combine this repair with other deferred maintenance to save on labor — shops often discount when doing multiple jobs at once.

Frequently Asked Questions

In Saint Louis, expect to pay $454–$691 total for radiator replacement on a 2020 GMC Terrain. Parts run $200–$302, and labor is $254–$389 (3.0 hours at $102.0/hr).

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Disclaimer: Cost estimates are based on national parts pricing databases and regional labor rate surveys. Actual prices vary by shop, vehicle condition, and parts availability. Always obtain a written estimate before authorizing repairs. Affiliate disclosure: links marked with Amazon may earn us a small commission.