FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * KNOBLAUCH MICHAEL W   2. Issuer Name and Ticker or Trading Symbol CREDIT ACCEPTANCE CORP [CACC] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) SVP Loan Servicing (Last) (First) (Middle) 25505 WEST TWELVE MILE ROAD 3. Date of Earliest Transaction (Month/Day/Year) 12/16/2009 (Street) SOUTHFIELD, MI 48034-8334 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 12/16/2009   M   10,000 A $ 3.625 54,166 (1) D   Common Stock 12/16/2009   S   1,677 D $ 38 52,489 (1) D   Common Stock 12/16/2009   S   460 D $ 38.01 52,029 (1) D   Common Stock 12/16/2009   S   113 D $ 38.02 51,916 (1) D   Common Stock 12/16/2009   S   100 D $ 38.04 51,816 (1) D   Common Stock 12/16/2009   S   100 D $ 38.047 51,716 (1) D   Common Stock 12/16/2009   S   100 D $ 38.055 51,616 (1) D   Common Stock 12/16/2009   S   127 D $ 38.06 51,489 (1) D   Common Stock 12/16/2009   S   400 D $ 38.07 51,089 (1) D   Common Stock 12/16/2009   S   100 D $ 38.097 50,989 (1) D   Common Stock 12/16/2009   S   100 D $ 38.105 50,889 (1) D   Common Stock 12/16/2009   S   400 D $ 38.11 50,489 (1) D   Common Stock 12/16/2009   S   200 D $ 38.112 50,289 (1) D   Common Stock 12/16/2009   S   500 D $ 38.117 49,789 (1) D   Common Stock 12/16/2009   S   200 D $ 38.12 49,589 (1) D   Common Stock 12/16/2009   S   85 D $ 38.122 49,504 (1) D   Common Stock 12/16/2009   S   100 D $ 38.125 49,404 (1) D   Common Stock 12/16/2009   S   271 D $ 38.145 49,133 (1) D   Common Stock 12/16/2009   S   2,100 D $ 38.15 47,033 (1) D   Common Stock 12/16/2009   S   100 D $ 38.155 46,933 (1) D   Common Stock 12/16/2009   S   200 D $ 38.165 46,733 (1) D   Common Stock 12/16/2009   S   792 D $ 38.17 45,941 (1) D   Common Stock 12/16/2009   S   300 D $ 38.172 45,641 (1) D   Common Stock 12/16/2009   S   15 D $ 38.207 45,626 (1) D   Common Stock 12/16/2009   S   100 D $ 38.23 45,526 (1) D   Common Stock 12/16/2009   S   794 D $ 38.252 44,732 (1) D   Common Stock 12/16/2009   S   266 D $ 38.26 44,466 (1) D   Common Stock 12/16/2009   S   200 D $ 38.31 44,266 (1) D   Common Stock 12/16/2009   S   100 D $ 38.352 44,166 (1) D

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Employee Stock Option (right to buy)

$ 3.625

12/16/2009

M

10,000

(2)

12/31/2009

Common Stock

10,000

$ 0

21,655

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
KNOBLAUCH MICHAEL W 25505 WEST TWELVE MILE ROAD SOUTHFIELD, MI 48034-8334			SVP Loan Servicing

Signatures

/s/ Michael W. Knoblauch		12/18/2009
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Includes 1,844 shares of unvested time-based restricted stock under the Company's Incentive Compensation Plan.
(2)	The employee stock options vested in installments based on the Company's satisfaction of certain performance-related criteria and became vested in full on February 27, 2006.

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