The only negative about the process was the shipping cost vs delivery time. The cost was steep for the amount of time it took to arrive.
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Review summary
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Reviews shaping this summary
Great pricing with good availability of parts. Genuine GM part was set & functioning in a low mileage 2004 Chevrolet Avalanche. This was a complete blower motor kit, with all after market motors a com... See more
Great company! I have bought several parts from them. Ordered new gm injectors for my pickup and motor runs smooth compared to rough with aftermarket injectors and got a great price for them. They alw... See more
Company replied
I love GMPartsGiant.com because all I need to do is enter the VIN number for my wife's Cadillac Xt5 and it automatically pulls up the correct parts plus they're OEM Original, not some cheap knockoff p... See more
Company details
- #45 of 77 best companies in Auto Parts Store
Written by the company
GM Parts Giant, by Genuine Parts Unlimited, Inc., is one of the largest distributors for OEM GM parts. Our online GM parts website offers customers the best discounted prices on OEM Chevrolet parts, GMC parts, Cadillac parts, and Buick parts. OEM stands for Original Equipment Manufacturer. In other words, it simply means our parts come direct from GM and GM AC Delco. Essentially, we do not sell aftermarket parts. We ship all of our parts from region based GM dealers within three business days to provide for fast service.
Written by the company
Contact info
United States
- 888-737-9766
- support@gmpartsgiant.com
- gmpartsgiant.com
4.2
Great
965 reviews
Asks customers to review
This company invites their customers to review, whether positive or negative
Replied to 83% of negative reviews
Typically replies within 1 week
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See how their reviews and ratings are sourced, scored, and moderated.
Reply from GMPartsGiant.com
Hi Donald,
We appreciate you taking the time to share your experience. Reliable delivery is something we take seriously. We’ll continue working hard to provide OEM parts you can count on.It means a lot to have your support!
Fraud
3 April 2026 I went to gmpartsgiant.com website. You have to enter the vehicle prior to starting a purchase. I ordered a thermostat asm eng cool part 12642691 via sales order VG83642696. Part arrived 6 April 2026..April 24, I contacted to return the item because it was not the correct part for my vehicle. I was contacted stating it was an electrical part and not returnable. I informed them I had put the VIN in and this was the recommended part....they email back stating I received a superseding part 24588515 and the parts are interchangeable and should work. The website did not reflect the updated information and the final answer was still no I was not authorized a return....the part clearly was not interchangeable it was totally different..I had to go to the local Chevrolet dealer and get the correct part.
April 24, 2026
Unprompted review
Reply from GMPartsGiant.com
Hi Kimberly,
Thank you for your feedback.
After reviewing the order, we were unable to locate a VIN submitted at checkout. Fitment can vary without VIN verification, as multiple parts with the same name may apply depending on trim level or production date.
We recommend VIN lookup for the most accurate fitment before checkout to confirm compatibility. If a part that does not fit your application was ordered, and the correct part per invoiced was delivered, the return request will be categorized as a no-longer-need.
We understand your frustration; however, electric components are not eligible for no-longer-need returns.
We appreciate your understanding and encourage the use of VIN verification for future orders to help ensure exact fitment.
For more information regarding our returns policy, please visit
https://www.gmpartsgiant.com/service/gm-return_policy.html
Parts were sent in a timely manner and…
Parts were sent in a timely manner and perfect fit.
April 29, 2026
Reply from GMPartsGiant.com
Hi Clay,
Thank you for your feedback! We're stoked to hear everything arrived quickly and fits perfect for your application. Hope to assist you again in the future!
Product fit great
They had the right parts for my vehicle at a good price. Everything fit great and product is working well.
April 29, 2026
Reply from GMPartsGiant.com
Hi there,
Appreciate your review. We're glad our selection had what you were looking for, we work hard to provide genuine GM OEM parts at a competitive price. Thank you for your support!
Reply from GMPartsGiant.com
Hi Donald,
Thank you for sharing your experience. We're happy to hear you had a positive experience with our support team. We appreciate your support and future business.
I had a terrible experience with GM…
I had a terrible experience with GM Parts Giant and would strongly advise others to avoid them.
Their customer service is essentially nonexistent. Communication is slow, unhelpful, and they do not take responsibility when issues arise. In my case, I never even received the item I ordered. I was notified that it was lost in transit and later confirmed it was being returned to the sender—yet they still refused to issue a refund.
Despite multiple follow-ups and providing proof, they continued to delay and avoid resolving the issue. It feels like they are more interested in keeping your money than actually helping their customers.
If you value your time, money, and peace of mind, buy from literally any other retailer. This was one of the worst purchasing experiences I’ve had.
April 20, 2026
Unprompted review
Reply from GMPartsGiant.com
Hi Hami,
Thanks for the feedback! We sincerely apologize for the inconvenience you have experienced.
We take all feedback seriously and strive to improve our customer service. We have requested more information on Trustpilot, please take your time and answer in detail as much as possible, so we may look into your concerns further.
Reply from GMPartsGiant.com
Hi Patrick,
Happy to hear everything was delivered on time. Appreciate your support!
Best prices on OEM parts
I always use OEM parts on my vehicle. I have found that GM Parts Giant always has the best prices.
April 29, 2026
Right part for the right price
Right part for the right price! Look forward to doing more business with GmPartsGiant
April 29, 2026
The quality of parts were outstanding…
The quality of parts were outstanding and delivery was on time . Thank you
April 29, 2026
The right part....at a very good price…
The right part....at a very good price compared to the dealer.
April 29, 2026
Received exactly what I ordered on-time…
Received exactly what I ordered on-time in perfect condition.
April 29, 2026
Great pricing with good availability of…
Great pricing with good availability of parts. Genuine GM part was set & functioning in a low mileage 2004 Chevrolet Avalanche. This was a complete blower motor kit, with all after market motors a complete failure. Good shipping as well!
April 29, 2026
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