Summary

• With 497 currently listed for sale and an average price of $37,704.00 CAD, 30.4% of 2020 GMC Sierras for sale on CarGurus are rated as good or great deals.

• Favourably reviewed: Owners rated the 2020 GMC Sierra 1500 4.28 / 5 stars.

• 100.0% of 2020 Sierra models on CarGurus are accident free.

• The 2020 GMC Sierra 1500 is praised for its spacious interior, advanced technology, and strong performance, although some drivers have reported issues with engine performance.

Why it stands out

The 2020 GMC Sierra 1500 distinguishes itself in the competitive full-size pickup truck market with its upscale design and robust performance capabilities. As part of the fifth generation introduced in 2019, it offers a variety of engine options, including a powerful 6.2-litre V8 and a fuel-efficient 3.0-litre inline-six Duramax turbodiesel. The Sierra 1500 is known for its impressive towing capacity and advanced technology features, such as the MultiPro tailgate, which enhances functionality. Owners appreciate the spacious interior and smooth ride, making it a comfortable choice for both work and leisure. However, some users have expressed concerns regarding engine performance issues, particularly oil burning and recalls, which potential buyers should consider. Overall, the 2020 GMC Sierra 1500 remains a strong contender for those seeking a reliable and versatile pickup truck.

Other model years to consider

• 2025 GMC Sierra 1500

  • Average price: $66,526.00 CAD
  • Good/great deal percentage: 36.4%
  • User rating: 5 / 5
  • Total listings: 1,347

• 2022 GMC Sierra 1500

  • Average price: $48,953.00 CAD
  • Good/great deal percentage: 30.7%
  • User rating: 5 / 5
  • Total listings: 768

• 2024 GMC Sierra 1500

  • Average price: $57,055.00 CAD
  • Good/great deal percentage: 36.3%
  • User rating: 4.64 / 5
  • Total listings: 1,426

This analysis is based on CarGurus' proprietary market data from July 13, 2026, CarGurus experts' opinions, and generative AI.