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.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.
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.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!
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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