More Contact Info

Toll-Free Number:

(800) 462-8782

Customer Service:

For persons with disabilities

(800) 323-9935

(800) 521-7300

(800) 458-8006

(800) 222-1020

(800) 553-6000

(866) 486-6376

(800) 762-2737

(313) 667-1432

(888) 316-2390

(800) 388-9107

(800) 419-6698

(800) 446-5347

(313) 667-4168

Accounting/ Billing:

(800) 460-2845

BuyPower Card

(877) 557-2622

GM Extended Family Card

(800) 284-2271

GM Financial account

Legal:

(866) 697-7482

Privacy Inquiries

Other Info

Other Info (opening hours):

Hours:

Monday – Friday: 8 a.m. – Midnight (EST)

Saturday: 9 a.m. – Midnight (EST)

Sunday: 11 a.m. – Midnight (EST)

Other Location:

Canada – GM of Canada

1908 Colonel Sam

Oshawa, Ontario

L1H 8P7, Canada

Company Address

GMC

P.O. BOX 33172

Detroit,

United States

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Complaints & Reviews — Gmc

11 Aug, 2021

I want to see an image of the new Forest Metlic color

I want to see the 2022 truck colors before I spend &;;;;;;;;;;;;;;;;;;;;;;;;;;80,000 Forest metlic is the GM marketing dept. is a disgrace

Auto

31 Jul, 2021

Running lights to trailers won’t work. Dealers do not know how to fix.

Update by user Aug 01, 2021 Truck will not power running lights on any trailer, camper, etc Original review posted by user Jul 31, 2021 GMC told me to take back to Dealer. Dealer called me, while I was enroute and said, no need to come in-no solution available at this time.

Auto

30 Jul, 2021

New car 2017 4**** GMC Acadia users 2 qt of oil between oil changes

Doing this for friend he worked during the day once we find out what he has to do he will take day off he has been to dealer many times tells him oil stays on top motor and its normal to burn 2 qt between oil change and tells him to check hot

Auto

28 Jul, 2021

Engine started making a knocking sound when I driving at any speed and thel lights stared flashing

I was driving the engine started making a knocking sound when driving at any speed and lights started flashing

Auto

22 Jul, 2021

Warranty work not being fixed and no follow up.

Original review updated by user Jul 22, 2021 I purchased a new 2021 GMC Sierra 6.6L. On the first oil change the dealer found a crack in the cylinder head. An obvious GMC quality issue. My truck has been at the dealer waiting for part for the past month with no follow up from GMC customer service... Read more ➤

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