Supporting Vendors / Dealers - Advertising - Shop

2005 Corvette: GM TechLink: Setting the Clock Radio

Owners of some 2005 Corvettes may state that the clock reads in 24 hour time (military time) on vehicles equipped with the RPO US8 or US9 radios.

If the customer wishes to switch between military time and 12 hour time, follow this procedure.
1. Press and hold the hours button for 2-3 seconds.
2. Depress the radio tuner knob to toggle between 12 hour and 24 hour (military) format. Release the knob for 30 seconds for the change to occur.

TIP: The Navigation radio (RPO U3U) can be changed from military time to regular time by accessing the clock menu.

- Thanks to Paul Radzwilowicz, GM TechLink, December 2004

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.

© Copyright General Motors Corporation. All Rights Reserved

5 (1)
Article Rating (1 Votes)
Rate this article
Attached Files
There are no attachments for this article.
Comments (1)
Comment by Marvin on Thu, Feb 7th, 2019 at 8:07 PM
Since changing car battery nav time cannot be set and sometimes gps with a slash shows. Is there any way to reset radio? Nav seems to work, xm works and fm and am work. Only the time screen is not functional for a 2007 C6 Z51.
Security Code Security Code
Related Articles RSS Feed
2007 - 2013 Corvette: Service Bulletin: #PIC4510C: OnStar® TBT (Turn by Turn) And Digit Display Location - (Jul 18, 2012)
Viewed 714 times since Sun, Mar 19, 2017
2005 - 2006 Corvette: Service Bulletin: Diagnostic Trouble Code (DTC) C0710 Steering Wheel Position Sensor (SWPS) Signal, Service Stability System Message on Driver Information Center (DIC)
Viewed 6198 times since Mon, Jul 14, 2014
2005 Corvette: Service Bulletin: Removal of Radio Fuse Before Attempting to Program/Reprogram Modules Using Service Program System (SPS)
Viewed 4233 times since Fri, Jul 18, 2014
2005 - 2007 Corvette: Service Bulletin: Intermittent Service Stability Message On DIC With Only DTC C0561 Symptom 71
Viewed 4646 times since Fri, Jul 18, 2014
2006 Corvette: Electrical Schematic: Base Radio System
Viewed 990 times since Tue, Jul 15, 2014
2006 Corvette: Electrical Schematic: Automatic AC System
Viewed 1375 times since Mon, Jul 14, 2014
2007 - 2013 Corvette: Service Bulletin: SES Lamp P0521 Setting After An Oil Change And Or Low Oil Pressure Indicated On The Instrument Panel
Viewed 844 times since Thu, Jun 9, 2016
2005 - 2013 Corvette: Service Bulletin: #PIC5049A: Fuel Tank Hard to Fill Or Displays 1/2 Tank After Filling - (Oct 22, 2012)
Viewed 755 times since Tue, Mar 14, 2017
2007 - 2008 Corvette: GM TechLink Article: Auto Volume Error
Viewed 946 times since Sat, Jul 5, 2014
2005 - 2006 Corvette: Service Bulletin: Front Park/Turn Signal Bulb Intermittently Inoperative
Viewed 1141 times since Mon, Jul 14, 2014