General Motors (GM) 8-K Other Events

Exhibit 99.1

For Release: Sept. 1, 2011, 10 a.m. EDT

GM’s U.S. Sales Up 18 Percent in August

Double-digit retail sales increases for all four GM Brands

DETROIT– General Motors Co. (NYSE: GM) today reported total sales of 218,479 vehicles in August, an 18 percent increase compared with August 2010.

Retail deliveries were up 22 percent compared with the same month a year ago and accounted for 74 percent of GM sales. Deliveries to fleet customers increased 8 percent.

“Our balanced portfolio of trucks and fuel-efficient vehicles like the Chevrolet Cruze, Chevrolet Equinox and GMC Terrain are helping GM continue to gain market share, which has now increased in seven of the past eight months,” said Don Johnson, vice president, U.S. Sales Operations. “We’re carrying good momentum and we’re cautiously optimistic that we’ll see U.S. economic growth improve in the months ahead.”

In August, year-over-year passenger car sales increased 18 percent, crossover sales increased 17 percent and truck sales increased 18 percent.

• Chevrolet: Cruze sales surpassed 20,000 for the fifth month in a row; Equinox sales rose 58 percent compared with August 2010.

• GMC: Terrain sales were up 88 percent; Acadia was up 54 percent compared with August 2010.

• Cadillac: Combined sales of the Cadillac CTS sedan, coupe and wagon increased 39 percent compared with August 2010. Cadillac reduced its fleet sales by 51 percent.

• Buick: August was the brand’s 23^rd consecutive month of year-over-year sales gains, and the Regal had its best month since launch, more than doubling sales.

Month-end dealer inventory in the United States was 556,884 units, including 212,520 full-size pickup trucks. GM is on track to meet its target of ending 2011 with a full-size pickup inventory of about 200,000 units, thanks to improved sales, which were up 10 percent compared with July, and production adjustments.

GM is closely monitoring consumer sentiment and other economic indicators but the company continues to expect that the full-year seasonally-adjusted annual rate (SAAR) for U.S. vehicle sales will be in the low end of our 13.0 million – 13.5 million unit range.

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Sales Highlights	Aug. 2011 Total Sales (vehicles)		Total Change vs. Aug. 2010			Aug. 2011 Retail Sales vs. Aug. 2010			CYTD Total Sales (vehicles)		CYTD Total Sales Change vs. 2010			CYTD Retail Sales Change vs. 2010
Chevrolet		152,779		16	%		22	%		1,206,332		14	%		23	%
GMC		36,471		40	%		26	%		261,753		27	%		23	%
Buick		16,021		12	%		19	%		126,493		25	%		27	%
Cadillac		13,208		4	%		14	%		100,449		9	%		17	%
Total		218,479		18	%		22	%		1,695,027		17	%		22	%

Inventory	Units @ Aug. 31, 2011		Days Supply (selling days adjusted)		Units @ July 31, 2011		Days Supply (selling days adjusted)
All Vehicles		556,884		66		537,822		65
Full-size Pickups		212,520		107		209,261		115

About General Motors –General Motors (NYSE: GM, TSX: GMM), one of the world’s largest automakers, traces its roots back to 1908. With its global headquarters in Detroit, GM employs 208,000 people in every major region of the world and does business in more than 120 countries. GM and its strategic partners produce cars and trucks in 30 countries, and sell and service these vehicles through the following brands: Baojun, Buick, Cadillac, Chevrolet, GMC, Daewoo, Holden, Isuzu, Jiefang, Opel, Vauxhall, and Wuling. GM’s largest national market is China, followed by the United States, Brazil, the United Kingdom, Germany, Canada, and Italy. GM’s OnStar subsidiary is the industry leader in vehicle safety, security and information services. More information on the new General Motors can be found atwww.gm.com.

CONTACT:

Jim Cain

james.cain@gm.com

Cell: 313-407-2843

Forward-Looking Statements

In this press release and in related comments by our management, our use of the words “expect,” “anticipate,” “possible,” “potential,” “target,” “believe,” “commit,” “intend,” “continue,” “may,” “would,” “could,” “should,” “project,” “projected,” “positioned” or similar expressions is intended to identify forward-looking statements that represent our current judgment about possible future events. We believe these judgments are reasonable, but these statements are not guarantees of any events or financial results, and our actual results may differ materially due to a variety of important factors. Among other items, such factors might include: our ability to realize production efficiencies and to achieve reductions in costs as a result of our restructuring initiatives and labor modifications; our ability to maintain quality control over our vehicles and avoid material vehicle recalls; our ability to maintain adequate liquidity and financing sources and an appropriate level of debt, including as required to fund our planned significant investment in new technology; the ability of our suppliers to timely deliver parts, components and systems; our ability to realize successful vehicle applications of new technology; and our ability to continue to attract new customers, particularly for our new products. GM’s most recent annual report on Form 10-K and quarterly reports on Form 10-Q provides information about these and other factors, which we may revise or supplement in future reports to the SEC.

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GM U.S. Deliveries for August 2011 - Divisional Brand Level

*S/D Curr: 26	August								(Calendar Year-to-Date) January - August
*S/D Prev: 25	2011		2010		% Chg Volume		%Chg per S/D		2011		2010		%Chg Volume
Vehicle Total		218,479		185,176		18.0		13.4		1,695,027		1,465,389		15.7
Brand Total		218,479		184,921		18.1		13.6		1,695,027		1,453,930		16.6
Other Brand Total		0		255		***.*		***.*		0		11,459		***.*
GM Vehicle Deliveries by Marketing Division
	2011		2010		%Chg Volume		%Chg per S/D		2011		2010		%Chg Volume
Buick Total		16,021		14,294		12.1		7.8		126,493		101,125		25.1
Cadillac Total		13,208		12,689		4.1		0.1		100,449		92,393		8.7
Chevrolet Total **		152,779		131,952		15.8		11.3		1,206,332		1,054,311		14.4
GMC Total **		36,471		25,986		40.3		35.0		261,753		206,101		27.0
Brand Total		218,479		184,921		18.1		13.6		1,695,027		1,453,930		16.6
HUMMER Total		0		205		***.*		***.*		0		3,344		***.*
Pontiac Total		0		7		***.*		***.*		0		954		***.*
Saab Total		0		0		***.*		***.*		0		608		***.*
Saturn Total		0		43		***.*		***.*		0		6,553		***.*
Other Brand Total		0		255		***.*		***.*		0		11,459		***.*
GM Vehicle Total		218,479		185,176		18.0		13.4		1,695,027		1,465,389		15.7

* Twenty-six selling days for the August period this year and twenty-five for last year.

** Calendar Year 2010 includes GMC & Chevrolet Dealer deliveries of commercial vehicles distributed by American Isuzu Motors, Inc.

Sales Reporting and Data Management Page 1 of 2

GM U.S. Deliveries for August 2011 by Model

	August								(Calendar Year-to-Date) January - August
	2011		2010		% Chg Volume		%Chg per S/D		2011		2010		%Chg Volume
Selling Days (S/D)		26		25
Enclave		5,387		4,595		17.2		12.7		39,536		35,881		10.2
LaCrosse		5,422		5,339		1.6		-2.4		40,720		42,795		-4.8
Lucerne		1,392		2,656		-47.6		-49.6		16,905		18,571		-9.0
Regal		3,820		1,704		124.2		115.6		29,332		3,878		656.4
Buick Total		16,021		14,294		12.1		7.8		126,493		101,125		25.1
CTS		5,783		4,155		39.2		33.8		37,237		28,756		29.5
DTS		719		1,896		-62.1		-63.5		10,172		12,117		-16.1
Escalade		1,105		1,076		2.7		-1.3		8,964		9,842		-8.9
Escalade ESV		655		724		-9.5		-13.0		5,057		4,874		3.8
Escalade EXT		174		188		-7.4		-11.0		1,241		1,196		3.8
SRX		4,627		4,325		7.0		2.9		34,960		32,703		6.9
STS		145		324		-55.2		-57.0		2,806		2,728		2.9
XLR		0		1		***.*		***.*		12		177		-93.2
Cadillac Total		13,208		12,689		4.1		0.1		100,449		92,393		8.7
Avalanche		1,789		1,815		-1.4		-5.2		12,128		13,268		-8.6
Aveo		2,596		4,019		-35.4		-37.9		27,211		28,734		-5.3
Camaro		6,823		6,321		7.9		3.8		63,255		60,185		5.1
Caprice		203		0		***.*		***.*		358		0		***.*
Chevy C/T Series		0		0		***.*		***.*		0		8		***.*
Chevy W Series		0		12		***.*		***.*		0		221		***.*
Cobalt		4		5,643		***.*		***.*		839		90,376		-99.1
Colorado		2,531		1,847		37.0		31.8		21,814		15,703		38.9
Corvette		936		1,135		-17.5		-20.7		9,123		8,689		5.0
Cruze		21,807		0		***.*		***.*		169,427		0		***.*
Equinox		16,606		10,538		57.6		51.5		129,538		87,397		48.2
Express		5,819		4,459		30.5		25.5		44,118		38,242		15.4
HHR		794		9,470		-91.6		-91.9		36,613		57,242		-36.0
Impala		13,329		17,343		-23.1		-26.1		124,300		121,399		2.4
Kodiak 4/5 Series		0		28		***.*		***.*		10		1,110		-99.1
Kodiak 6/7/8 Series		0		3		***.*		***.*		0		199		***.*
Malibu		17,840		18,182		-1.9		-5.7		160,152		146,957		9.0
Silverado-C/K Pickup		36,832		34,084		8.1		3.9		252,738		235,530		7.3
Sonic		280		0		***.*		***.*		280		0		***.*
Suburban (Chevy)		4,938		3,080		60.3		54.2		27,809		28,945		-3.9
Tahoe		8,069		6,119		31.9		26.8		47,823		49,721		-3.8
TrailBlazer		0		4		***.*		***.*		33		211		-84.4
Traverse		11,281		7,850		43.7		38.2		75,591		70,098		7.8
Uplander		0		0		***.*		***.*		0		76		***.*
Volt		302		0		***.*		***.*		3,172		0		***.*
Chevrolet Total		152,779		131,952		15.8		11.3		1,206,332		1,054,311		14.4
Acadia		6,491		4,223		53.7		47.8		56,726		45,121		25.7
Canyon		1,606		667		140.8		131.5		7,176		4,873		47.3
Envoy		0		5		***.*		***.*		5		78		-93.6
GMC C/T Series		0		0		***.*		***.*		0		52		***.*
GMC W Series		0		15		***.*		***.*		0		308		***.*
Savana		895		1,291		-30.7		-33.3		12,250		9,678		26.6
Sierra		13,244		11,640		13.8		9.4		93,438		79,158		18.0
Terrain		7,875		4,189		88.0		80.8		56,541		35,092		61.1
Topkick 4/5 Series		0		12		***.*		***.*		5		835		-99.4
Topkick 6/7/8 Series		0		1		***.*		***.*		8		348		-97.7
Yukon		3,597		2,387		50.7		44.9		20,999		16,564		26.8
Yukon XL		2,763		1,556		77.6		70.7		14,605		13,994		4.4
GMC Total		36,471		25,986		40.3		35.0		261,753		206,101		27.0
Brand Total		218,479		184,921		18.1		13.6		1,695,027		1,453,930		16.6
HUMMER Total		0		205		***.*		***.*		0		3,344		***.*
Pontiac Total		0		7		***.*		***.*		0		954		***.*
Saab Total		0		0		***.*		***.*		0		608		***.*
Saturn Total		0		43		***.*		***.*		0		6,553		***.*
Other Brand Total		0		255		***.*		***.*		0		11,459		***.*
GM Vehicle Total		218,479		185,176		18.0		13.4		1,695,027		1,465,389		15.7

Sales Reporting and Data Management Page 2 of 2