Okay I tried this on the general page I might as well try the tech guys
I know you hold the h and m buttons in until it beeps, then what do you do to change from military to standard time.
It's NOT IN the manual. Help.

 

To switch between Military Time and the 12 Hour clock:

1) Put the Ignition in the Accessory or ON position.
2) Press and hold the hours button for 2-3 seconds until the radio display reads " Adjust time ".
3) Press in the radio tuner **** until the desired time setting is displayed and then let go of the ****.

No charge.

 

Document ID# 1577199
2005 Chevrolet Corvette


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2005 Buick Terraza, Chevrolet Corvette and Uplander, Pontiac SV6 and Saturn Relay Radio Clock Reads in Military Time - kw accessory communication GMT201 program performance #PIC3210A - (Dec 13, 2004)
05 Buick Terraza, Chevy Corvette And Uplander, Pontiac SV6 And Saturn Relay Radio Clock Reads In Military Time
.

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The following diagnosis might be helpful if the vehicle exhibits the symptom described in the PI.

Condition/Concern:
Some customers state that the clock reads in 24 Hour time (Military Time) on vehicles equipped with the RPO US8 or US9 Radios.

Recommendation/Instructions:
If the customer wishes to switch between Military Time and the 12 Hour clock. Please follow the following procedure:

1) Put the Ignition in the Accessory or ON position.
2) Press and hold the hours button for 2-3 seconds until the radio display reads " Adjust time ".
3) Press in the radio tuner **** until the desired time setting is displayed and then let go of the ****.
.

Please follow this diagnosis process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed. If these steps do not resolve the condition, please contact GM TAC for further diagnostic assistance.

.

Models:
(2005 Chevrolet Corvette with RPO (US8) or RPO (US9)) and (2005 Buick Terraza and 2005 Chevrolet Uplander) and (2005 Pontiac SV6) and (2005 Saturn Relay with RPO (US8) or RPO (US9))



GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these 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 your GM dealer for information on whether your vehicle may benefit from the information.
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© Copyright General Motors Corporation. All Rights Reserved.


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Document ID# 1577199
2005 Chevrolet Corvette

 

Thanks guys...this one has been floating around awhile with no answers. I'm just befuddled as to how it got changed in the first place

 

Yes I am befuddled too.