Exhibit 99.1

GM Financial Automobile Leasing Trust 2017-3

2.84% Exchange Note

Class A-1 1.35000% Asset Backed Notes

Class A-2A 1.72% Asset Backed Notes

Class A-2B Floating Asset Backed Notes

Class A-3 2.01% Asset Backed Notes

Class A-4 2.12% Asset Backed Notes

Class B 2.40% Asset Backed Notes

Class C 2.73% Asset Backed Notes

Class D 2.83% Asset Backed Notes

Servicer’s Certificate

Beginning of Period:	09/01/19
End of Period:	09/30/19
Number of days in Interest Period (Actual/360):	31
Number of days in Collection Period:	30
Report Due Date:	10/17/19
Distribution Date:	10/21/19
Transaction Month:	25

2017-3 Designated Pool	Units		Start Date	Closing Date	Original Agg. Securitization Value
		45,285	08/01/2017	09/20/2017	$	1,090,137,186

Total		45,285			$	1,090,137,186

RECONCILIATION OF 2017-3 DESIGNATED POOL AGGREGATE SECURITIZATION VALUE

{1}

Beginning of period Aggregate Securitization Value

{1}

416,201,578

{2}

Reduction in Agg. Securitization Value due to payments

{2}

5,535,315

{3}

Reduction in Agg. Securitization Value due to Defaulted Leases

{3}

1,046,040

{4}

Reduction in Agg. Securitization Value due to early terminations, dealer buyouts, cancellations, repurchases

{4}

29,717,947

{5}

Other adjustments

{5}

{6}

Total change in Agg. Securitization Value

{6}

36,299,302

{7}

End of period Aggregate Securitization Value

{7}

379,902,276

{8}

Pool Factor

{8}

34.849034

RECONCILIATION OF 2017-3 EXCHANGE NOTE

{9}	Original Exchange Note Balance	{9}	$	1,053,000,000

{10}	Beginning of period Exchange Note Balance	{10}	$	379,064,392

{11}	Exchange Note Principal Payment Amount	{11}		36,299,302

{12}	End of period Exchange Note Balance	{12}	$	342,765,090

{13}	Note Pool Factor	{13}		32.551291	%

RECONCILIATION OF THE ASSET BACKED NOTES

			Class A-1			Class A-2A			Class A-2B			Class A-3			Class A-4
{14}	Original Note Balance	{14}	$	134,000,000		$	200,000,000		$	150,000,000		$	310,000,000		$	84,700,000

{15}	Beginning of period Note Balance	{15}	$	0		$	0		$	0		$	103,713,202		$	84,700,000

{16}	Noteholders’ Principal Distributable Amount	{16}		0			0			0			36,299,302			0
{17}	Noteholders’ Accelerated Principal Amount	{17}		0			0			0			0			0
{18}	Aggregate Principal Parity Amount	{18}		0			0			0			0			0
{19}	Matured Principal Shortfall	{19}		0			0			0			0			0

{20}	End of period Note Balance	{20}	$	0		$	0		$	0		$	67,413,900		$	84,700,000

{21}	Note Pool Factor	{21}		0.000000	%		0.000000	%		0.000000	%		21.746419	%		100.000000	%

			Class B			Class C			Class D						TOTAL
{22}	Original Note Balance	{22}	$	47,420,000		$	44,100,000		$	29,980,000					$	1,000,200,000

{23}	Beginning of period Note Balance	{23}	$	47,420,000		$	44,100,000		$	29,980,000					$	309,913,202

{24}	Noteholders’ Principal Distributable Amount	{24}		0			0			0						36,299,302
{25}	Noteholders’ Accelerated Principal Amount	{25}		0			0			0						0
{26}	Aggregate Principal Parity Amount	{26}		0			0			0						0
{27}	Matured Principal Shortfall	{27}		0			0			0						0

{28}	End of period Note Balance	{28}	$	47,420,000		$	44,100,000		$	29,980,000					$	273,613,900

{29}	Note Pool Factor	{29}		100.000000	%		100.000000	%		100.000000	%					27.355919	%

EXCHANGE NOTE MONTHLY PRINCIPAL PAYMENT AND INTEREST CALCULATIONS

Principal payment calculation:

{30}

Beginning of period Designated Pool Balance

{30}

416,201,578

{31}

Ending Designated Pool Balance

{31}

379,902,276

{32}

Unpaid prior Exchange Note Principal Payment Amount

{32}

{33}

Sum of {31} + {32}

{33}

379,902,276

{34}

Exchange Note Principal Payment Amount {30} - {33}

{34}

36,299,302

	Interest calculation:
		Beg Note Balance		Interest Carryover		Interest Rate			Days	Days Basis	Interest
{35}		$	379,064,392	$	0		2.84	%	30	30/360	$	897,120

RECONCILIATION OF EXCHANGE NOTE COLLECTION ACCOUNT

Additions:

{36}

2017-3 Designated Pool Collections (net of Liquidation Proceeds and fees)

{36}

7,345,350

{37}

Net Liquidation Proceeds collected during period

{37}

34,649,227

{38}

Investment Earnings

{38}

77,085

{39}

Investment Earnings - transferred to Indenture Note Collection Account

{39}

(77,085

)

{40}

Deposit from Servicer

{40}

{41}

Total Additions:

{41}

41,994,577

Distributions:

{42}

To the Servicer, Designated Pool Servicing Fee

{42}

346,835

{43}

To the 2017-3 Exchange Noteholder, the Exchange Note Interest Payment Amount

{43}

897,120

{44}

To the 2017-3 Exchange Noteholder, the Exchange Note Principal Payment Amount

{44}

36,299,302

{45}

To the 2017-3 Exchange Noteholder, any funds available to pay obligations pursuant to Indenture Section 8.3 (a)(i) through (xvii)

{45}

{46}

To the 2017-3 Exchange Noteholder, all remaining funds to be applied as Excess Exchange Note Payments

{46}

4,451,320

{47}

Total Distributions:

{47}

41,994,577

NOTEHOLDERS’ MONTHLY PRINCIPAL PAYMENT AND INTEREST CALCULATIONS

Noteholders’ Principal Distributable calculation:

{48}

Beginning Agg. Securitization Value

{48}

416,201,578

{49}

Ending Agg. Securitization Value

{49}

379,902,276

{50}

Principal Distributable Amount {48} - {49}

{50}

36,299,302

{51}

Noteholders’ Principal Carryover Amount

{51}

{52}

Principal Distributable Amount + Noteholders’ Principal Carryover Amount

{52}

36,299,302

{53}

Amount required to reduce Outstanding Amount after giving effect to distributions made pursuant to Indenture Section 8.3 (i) through (xiii) to the Required Pro Forma Note Balance

{53}

36,299,302

{54}

Noteholders’ Principal Distributable Amount Lessor of {52} and {53}

{54}

36,299,302

	Noteholders’ Interest Distributable calculation:
	Class	Beg Note Balance		Interest Carryover		Interest Rate			Days	Days Basis	Interest
{55}	Class A-1	$	0	$	0		1.35	%	31	Actual/360	$	0
{56}	Class A-2A	$	0		0		1.72	%	30	30/360		0
{57}	Class A-2B	$	0		0		2.28425	%	31	Actual/360		0
{58}	Class A-3	$	103,713,202		0		2.01	%	30	30/360		173,720
{59}	Class A-4	$	84,700,000		0		2.12	%	30	30/360		149,637
{60}	Class B	$	47,420,000		0		2.40	%	30	30/360		94,840
{61}	Class C	$	44,100,000		0		2.73	%	30	30/360		100,328
{62}	Class D	$	29,980,000		0		2.83	%	30	30/360		70,703

RECONCILIATION OF INDENTURE COLLECTION ACCOUNT

Available Funds:

{63}

2017-3 Exchange Note Collections

{63}

41,647,742

{64}

Investment Earnings

{64}

{65}

Investment Earnings - transferred from Exchange Note Collection Account

{65}

77,085

{66}

Investment Earnings - and amounts released from Reserve Account pursuant to Section 2.14(b)(ii) of Servicing Supplement

{66}

8,408

{67}

Optional Purchase Price

{67}

{68}

Indenture Section 5.4 disposition of Collateral

{68}

{69}

Available Funds:

{69}

41,733,235

{70}

Reserve Account Withdrawal Amount

{70}

{71}

Total Distributable Funds:

{71}

41,733,235

Distributions:

{72}

To the Successor Servicer, unpaid transition expenses, pro rata

{72}

{73}

To the Indenture Trustee, any accrued and unpaid fees & expenses, pro rata

{73}

417

{74}

To the Issuer Owner Trustee, any accrued and unpaid fees & expenses, pro rata

{74}

208

{75}

To the Asset Representations Reviewer, any accrued and unpaid fees & expenses, pro rata

{75}

{76}

Class A-1 Noteholders’ Interest Distributable Amount pari passu

{76}

{77}

Class A-2A Noteholders’ Interest Distributable Amount pari passu

{77}

{78}

Class A-2B Noteholders’ Interest Distributable Amount pari passu

{78}

{79}

Class A-3 Noteholders’ Interest Distributable Amount pari passu

{79}

173,720

{80}

Class A-4 Noteholders’ Interest Distributable Amount pari passu

{80}

149,637

{81}

Class A Noteholders’ Principal Parity Amount or Matured Principal Shortfall

{81}

{82}

Class B Noteholders’ Interest Distributable Amount

{82}

94,840

{83}

Class B Noteholders’ Principal Parity Amount or Matured Principal Shortfall

{83}

{84}

Class C Noteholders’ Interest Distributable Amount

{84}

100,328

{85}

Class C Noteholders’ Principal Parity Amount or Matured Principal Shortfall

{85}

{86}

Class D Noteholders’ Interest Distributable Amount

{86}

70,703

{87}

Class D Noteholders’ Principal Parity Amount or Matured Principal Shortfall

{87}

{88}

Noteholders’ Principal Distributable Amount

{88}

36,299,302

{89}

To the Reserve Account, the Reserve Amount Required Amount

{89}

{90}

To the Noteholders, the Accelerated Principal Amount (as calculated below)

{90}

{91}

To the Successor Servicer, any amounts in excess of the caps set forth, pro rata

{91}

{92}

To the Indenture Trustee, any amounts in excess of the caps set forth, pro rata

{92}

{93}

To the Asset Representations Reviewer, any amounts in excess of the caps set forth, pro rata

{93}

{94}

To the Issuer Owner Trustee, any amounts in excess of the caps set forth, pro rata

{94}

{95}

To the Issuer Trust Certificateholders, the aggregate amount remaining

{95}

4,844,080

{96}

Total Distributions:

{96}

41,733,235

PRINCIPAL PARITY AMOUNT CALCULATION

	Class	(X) Cumulative Note Balance		(Y) Aggregate Securitization Value		(I) Excess of (X) - (Y)		(II) Total Available Funds in Indenture Collection Account		Lesser of (I) or (II)
{97}	Class A	$	188,413,202	$	379,902,276	$	0	$	41,409,253	$	0
{98}	Class B		235,833,202		379,902,276		0		41,314,413		0
{99}	Class C		279,933,202		379,902,276		0		41,214,085		0
{100}	Class D		309,913,202		379,902,276		0		41,143,382		0

ACCELERATED PRINCIPAL AMOUNT CALCULATION

{101}

Excess Total Available Funds

{101}

4,844,080

{102}

Beginning Note Balance

{102}

309,913,202

{103}

Principal payments through Indenture Section 8.3 (i) through (xv)

{103}

36,299,302

{104}

Pro-Forma Note Balance

{104}

273,613,900

{105}

Ending Aggregate Securitization Value

{105}

379,902,276

{106}

10.75% of Aggregate Securitization Value as of Cutoff until Class A-2 is paid in full,9.75% Thereafter ($106,288,376)

{106}

106,288,376

{107}

Required Pro Forma Note Balance {105} - {106}

{107}

273,613,900

{108}

Excess of Pro Forma Balance minus Required Pro Forma Balance {104} - {107}

{108}

{109}

Lesser of Excess Total Available Funds and Excess of Pro Forma Note Balance

{109}

OVERCOLLATERALIZATION CALCULATIONS

Exchange Note:

{110}

Ending Aggregate Securitization Value

{110}

379,902,276

{111}

End of Period Note Balance

{111}

342,765,090

{112}

Overcollateralization

{112}

37,137,186

{113}

Overcollateralization %

{113}

9.78

Asset Backed Notes:

{114}

Ending Aggregate Securitization Value

{114}

379,902,276

{115}

End of Period Note Balance

{115}

273,613,900

{116}

Overcollateralization

{116}

106,288,376

{117}

Overcollateralization %

{117}

27.98

RECONCILIATION OF 2017-3 CASH RESERVE ACCOUNT

{118}

Specified Reserve Balance

{118}

5,450,686

{119}

Beginning of Period Reserve Account balance

{119}

5,450,686

{120}

Investment Earnings

{120}

8,408

{121}

From the Indenture Collection Account, the Reserve Account Required Amount

{121}

{122}

To the Indenture Collection Account, the Reserve Account Withdrawal Amount

{122}

{123}

Total Reserve balance available:

{123}

5,459,094

{124}

Specified Reserve Balance

{124}

5,450,686

{125}

Release Excess Cash to Indenture Collection Available Funds

{125}

8,408

{126}

End of period Reserve Account balance

{126}

5,450,686

ASSET REPRESENTATIONS REVIEW DELINQUENCY TRIGGER

Dollars

Percentage

{127}

Receivables with Scheduled Payment delinquent 61 days or more

{127}

1,779,252

0.47

{128}

Compliance (Trigger Violation is a Delinquency Rate Greater Than 2.90% )

{128}

Yes

By:	/s/ Randal L. Willis
Name:	Randal L. Willis
Title:	Senior Vice President, Securitization & Conduit Reporting-Treasury
Date:	October 16, 2019

GM Financial

GMALT 2017-3

Supplemental Monthly Data

September 30, 2019

	Aggregate Securitization Value			Residual Value
Beginning of Period	$	416,201,578		$	376,080,573
Change		(36,299,302	)		(29,944,371	)
End of Period	$	379,902,276		$	346,136,202


Residual Value as % of Agg. Securitization Value					91.11	%

Delinquency

Leases with scheduled payment delinquent	Number of Leases		Agg. Securitization Value		Percentage⁽¹⁾
0 - 30 days		19,357		374,739,786		98.64	%
31 - 60 days		182		3,383,238		0.89	%
61 - 90 days		63		1,227,804		0.32	%
91 - 120 days		28		551,448		0.15	%
Total		19,630		379,902,276		100.00	%

Lease Terminations

	Current Period				Cumulative
	Number of Leases		Agg. Securitization Value		Number of Leases		Agg. Securitization Value
Retained vehicles by lessee
Early terminations		226		4,973,031		3,301		81,028,462
Standard terminations		130		2,549,571		1,153		22,095,524
Total retained by lessee		356		7,522,602		4,454		103,123,986
Returned Vehicles
Early terminations		679		11,409,317		11,037		192,475,841
Standard terminations		604		10,786,028		8,600		148,251,096
Total returned to dealer		1,283		22,195,345		19,637		340,726,937
Charged off leases / Repossessed vehicles		65		1,046,040		1,563		32,449,342
Repurchases		0		0		1		31,196
Other		0		0		0		0
Total terminations		1,704		30,763,987		25,655		476,331,461

Net Credit (Gain) Loss

	Current Period		Cumulative
Agg. Securitized Value of early term defaults		1,046,040		32,449,342
less: Sales proceeds		810,212		30,777,362
less: Excess wear and excess mileage received		7,253		19,548
less: Other amounts received		3,113		524,387
Net Credit (Gain) Loss		225,462		1,128,045

Residual (Gain) Loss on Returned Vehicles

Agg. Securitized Value of returned vehicles sold by Servicer	22,050,531		338,067,204
add: Reimbursement of outstanding residual advance	N/A		N/A
less: Sales proceeds	24,652,540		365,655,633
less: Excess wear and excess mileage received	196,741		1,149,894
less: Other recovery amounts	9,723		508,008
Residual (Gain) Loss	(2,808,473	)	(29,246,331	)

	Current Period			Prev. Month
Prepay Speed		0.7646	%		1.5256	%

Return Rate based on Scheduled to Terminate⁽²⁾		73.9908	%		108.8176	%

Return Rate based on Terminated Leases⁽³⁾		75.2934	%		79.2315	%

(1)

Percentages may not add to 100% due to rounding.

(2)

Percentage of total number of vehicles returned to dealer over number of vehicles scheduled to terminate per month.

(3)

Percentage of total number of vehicles returned to dealer over number of vehicles terminated per month.

GM Financial Automobile Leasing Trust 2017-3 10-D