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 business, not verified by us.
Is GMPartsGiant.com legit?
GMPartsGiant.com (gmpartsgiant.com) has a 4.4 out of 5 rating on OK.one, based on 102 user reviews collected here. It is listed under Vehicles & Transportation and its reputation is good. 85% of reviews are 4 stars or higher and 14% are 1 star; The business has replied to 73% of negative reviews; Reviews mostly discuss Product, Price, Quality. Last updated 2026-08-11.
What reviewers say
AI generated
Reviewers overwhelmingly had a great experience with this company, consistently praising the overall high value offered. Customers truly appreciate the affordable pricing, great product quality, and efficient delivery services provided during their everyday online purchases. Many consumers note that finding the correct automotive components using the digital catalog is exceptionally quick, reliable, and completely straightforward.
However, some people mentioned that they encountered frustrating experiences regarding high shipping expenses or unexpected price increases after placing an order. A few reviewers additionally shared that they received damaged items, or faced significant operational difficulties regarding product returns and expensive restocking fees.
Auto-generated from all reviews of this business. For reference only.
Shipping price was harendous! 43 dollars for a 4 dollor calliper repair kit that only had half the parts! The bag it came in was open and part of the kit was removed! The company stated you got what you ordered. TOTALLY UNLESS and l waited for weeks to get it! I will strongly recommend to my fellow mechanics and custom car builders to stay AWAY! BAD service to customers and phony reviwes! -3 out of 10 :( $47.00 of agrivation $260.00 new caliper I installed NO choice waited too long for half the parts and rediculous shipping cost! :(
I placed an order for a GMC instrument cluster for $120 and some change. Got an email confirmation of my purchase and processing. the very next day I checked order status and I find out order cannot process because their is a price increase of 120.00 that needs to be paid before shipment. are you kidding me, double the amount from original. called them I get zero apology just it is what it is. That is extreamly shady and untrustworthy. I cancled the order Steer clear of GMPartsGiants.
Reply from GMPartsGiant.com2026-07-16
Thank you for your feedback. Unfortunately, adjustments may occur due to changes in prices or shipping costs from our suppliers.
Updated pricing will also be reflected on our website during scheduled maintenance within the next 3–5 business days. Your feedback is essential for improving our services.
Be very careful when purchasing from this organization. Even if they send you the wrong part, they will charge a significant restocking fee. I was charged a $47 restocking fee for an $180 part. There was no chance to re-order since they did not have the matching part for my vehicle. I also had to pay return shipping.
In addition, it took over 3 months to process the refund.
There are much better options with companies that actually value their customers.
Be careful!
Reply from GMPartsGiant.com2026-07-21
Thank you for your feedback. If the correct part was shipped as ordered, the RMA will be categorized as no longer needed, and may be subject to a 20% restocking fee, we apologize for the inconvenience. Additionally, not all parts are eligible for return. For more information, please visit https://www.gmpartsgiant.com/service/gm-return_policy.html Your feedback is essential for improving our services.
They are not customer first as if you have the wrong part they have excuses so that you can't return it. I wouldn't recommend ordering from them because of their return policies. Typical bad online experience. I'm stuck with a part I can't use and they don't even offer to exhange it..
Reply from GMPartsGiant.com2026-07-14
Hi Larry,
Thank you for your feedback. We’ve reviewed your order and confirmed that a VIN was not used during the part selection process. There are multiple parts with the same name that fit your search result due to different options and trims.
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, but 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 returns.
We appreciate your understanding and encourage the use of VIN verification through our Parts Question with our new Customer Assistant.
For more information regarding our returns policy, please visit: https://www.gmpartsgiant.com/service/gm-return_policy.html
I placed an order with GMPartsGiant.com on June 22 for an auto part costing approximately $53 including tax.
After waiting for an entire week, the order still had not shipped. I contacted customer service, and only after my inquiry did I receive tracking information. When the package finally arrived, the part inside was damaged and unusable.
I immediately contacted the company to request a replacement. Customer service asked me to provide photos of the damaged part, which I submitted as requested. At that time, no one told me that I was also required to keep the shipping box or provide photos of the external packaging.
After receiving no meaningful update for another week, I called the company to follow up. Only then was I told that photos of the shipping packaging were required. By that time, the packaging had already been discarded because the company had never informed me that it needed to be retained.
The company then refused to replace or refund the damaged part solely because I could not provide packaging photos. This requirement was not communicated when I first reported the damage and submitted the requested evidence. It is completely unreasonable for the company to introduce a new requirement one week later and then use it as an excuse to deny responsibility.
The entire experience involved delayed shipping, poor communication, a damaged product, unclear claims procedures, and an unjustified refusal to resolve the issue. Based on my experience, the company’s customer service practices were misleading, unfair, and designed to avoid responsibility rather than assist the customer.
Reply from GMPartsGiant.com2026-07-13
We're sorry to hear about your experience and truly appreciate you bringing this to our attention. This is not the level of service we aim to provide, and we’d like the opportunity to make things right.
A member of our team will be reaching out to you directly to discuss the situation further. We value your input and hope to resolve this promptly.
Ordered a part ,payed total price and shipping. Im waiting for a couple of days l, than get email that the price is more for the item and won't be ship till and price increase is payed . Thats terrible business, totally waste of time and effort. Will never shop again with you guys and I hope other customers see how shady you guys are.
Reply from GMPartsGiant.com2026-07-09
Thank you for your feedback. We are truly sorry to hear about the challenges you faced. The shipping cost you see is due to the overall size, dimensions, and weight of the part(s) in your order.
These factors require extra measures by the carriers to ensure the parts are shipped securely and arrive without damage. These precautions influence the shipping charges applied to your order.
We understand how important it is and your feedback is invaluable and will help us improve and better serve our customers in the future.
wont be using them again, everything is fine until you have a problem. difficult to get a hold of, held hostage by the online email contact process. still no resolution to the part that was missing out of a filter kit (one seal).
3weeks go by back and forth and i finally spend time on hold to speak with someone. told me they can not move forward without a photo. The part is missing not sure how the photo will help. (just another Cog in their process) I send a photo immediately of the two parts i got and clearly explained what was missing. get another customer service email back later same day statement saying after reviewing your photo the part is not included. So here i go in circles again. The filter kit i ordered is supposed to come with three parts, I only got two! Fact. Its like a big game to them. no one takes it seriously and they hope you will just give up. Poor customer service. Like i said you are fine until something goes wrong! Shop elsewhere, no ownership when they made a mistake. dont waste your time with these business practices.
Hello Dennis,
We appreciate you taking the time to share your experience. Helping customers order OEM parts with confidence is important to us. Hope to serve you again soon. Thanks again Dennis!
Best price for new headlight assemblies. Fast shipping too.
Reply from GMPartsGiant.com2026-07-03
Hello John,
We appreciate you taking the time to share your experience. Providing competitive pricing on OEM parts and fast shipping is something we work hard to maintain. Looking forward to helping you with future OEM parts needs! Thanks again John!
Fast shipping, everything arrived in perfect shape.
Reply from GMPartsGiant.com2026-07-03
Hello Kevin,
We’re happy to know you had a positive experience. We work hard to ensure orders arrive accurately and efficiently. Wishing you many smooth miles ahead! Thanks again Kevin!
On May 26th, 2026 I ordered a wheel for a 2025 Chevorlet Trailblazer for the amount of $223.74. Then they requested an additional $26.75 for more shipping and handling. I received it June 10th, 2026. It was the wrong size wheel for my vehicle. Their website says it will fit my vehicle it does not. When I asked to return it for a refund, they denied stating it was special order part. It never said it was non-refundable or a special order when I purchased it. It only says electrical parts are non-refundable in their return policy. I would like my refund please.
Reply from GMPartsGiant.com2026-06-23
Thank you for your feedback. The part ordered was a special-order item, and approval was provided before it was processed. Because these parts are specially requested from the manufacturer, they aren't eligible for return once the order is confirmed. Your feedback is essential for improving our services.
Hello Brian,
We appreciate you taking the time to share your experience. Reliability and proper fit are exactly what we aim to deliver. We’ll continue working hard to provide OEM parts you can count on. It means a lot to have your support. Thanks again Brian!
The part I ordered was correct and came carefully packaged and intact.
Reply from GMPartsGiant.com2026-07-03
Hello Alastair,
We appreciate you sharing your thoughts with us. We’re pleased everything arrived smoothly and securely packaged. Looking forward to helping you with your next project. Thanks again Alastair!
Hello Tom,
We appreciate you taking the time to share your experience. Glad to hear shipping and packaging met expectations. Your support truly means a lot to our team! Thanks again Tom!
Hello Paul,
We appreciate you taking the time to share your experience. We aim to make OEM parts more accessible and affordable. Looking forward to helping you with future OEM parts needs! Thanks again Paul!
Hello Michael,
We appreciate you taking the time to share your experience. Our team works hard to maintain an intuitive order experience with many easy-to-navigate features such as interactive parts diagram, and Parts Question. Thanks again Michael!
After shopping around looking for a specific part... buying the (wrong part) as well.
I finally fell upon GMParts Giant placed my order for the exact part needed. The price point was great also.
Reply from GMPartsGiant.com2026-07-03
Hello Dennis,
We’re happy to know you had a positive experience. We’re glad you found the value you were looking for.
Providing competitive pricing on OEM parts is something we work hard to maintain. We appreciate the great review and we wish you many smooth miles ahead. Thanks again Dennis!
Hello Sam,
We appreciate you taking the time to share your experience. Reliability and proper fit are exactly what we aim to deliver. We appreciate your support and future business! Thanks again Sam!
Hello Nick,
Thank you for your feedback. We’re proud to provide genuine OEM parts customers can rely on. We’ll be here whenever you need OEM parts you can rely on!
Factory GM parts at a great price. Easy to order and shipment was well packed.
Reply from GMPartsGiant.com2026-07-03
Hello Kurt,
We appreciate you choosing us for your OEM parts needs. Providing competitive pricing on OEM parts and reliable shipping is something we work hard to maintain. We truly value your business, thanks again Kurt!
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