The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 10, 2012
Filed:
Aug. 30, 2010
Emmanuel V. Yabes, Canton, MI (US);
Brian J. Pellerito, Ortonville, MI (US);
Michael Chernyak, Farmington Hills, MI (US);
Craig J. Hawkins, Howell, MI (US);
Cheol W. Kim, Canton, MI (US);
Emmanuel V. Yabes, Canton, MI (US);
Brian J. Pellerito, Ortonville, MI (US);
Michael Chernyak, Farmington Hills, MI (US);
Craig J. Hawkins, Howell, MI (US);
Cheol W. Kim, Canton, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A method of controlling a vehicle includes signaling a transmission to shift into a first gear ratio and sensing a current gear ratio of the transmission after signaling the transmission to shift into the first gear ratio. The method further includes implementing a diagnostic transmission shift control strategy to override a normal transmission shift control strategy when the current sensed gear ratio is not equal to the requested first gear ratio to verify proper functionality of a mode control valve that is responsible for shifting the transmission into the first gear ratio.