2008 Chevy Express Van/cutaway Radio Clock Problem

[smitty123]

2008 Express van, the clock sometimes resets to 12:00.

Somehow the clock portion of the radio is losing power when it is not supposed to.

 

From what I can tell, it happens when some accessory is plugged into either cigarette outlets, like a cell phone charger or a GPS unit power cord. There are two outlets. both work fine.

I can't recreate this problem unless something is plugged into a 12v outlet.

It has not happened with nothing plugged into an outlet.

The radio is a basic 6 button base style AM/FM radio.

 

1-Can anyone check to see if there is a TSB on this problem?

 

2- Any other ideas?

 

Thanks

[GMTRUCKTECH]

here you go bud!

Subject:Radio Clock Intermittently Resets - keywords ground power start UM7 UC1 up wire #PIT4470A - (10/02/2007)

 

 

 

 

Models:2007-2008 Chevrolet Silverado

 

 

2008 Chevrolet Express

 

 

2007-2008 GMC Sierra

 

 

2008 GMC Savanna

 

 

with RPO UM7 or UC1

 

 

 

 

This PI was superseded to update Recommendation/Instructions. Please discard PIT4470.

 

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

 

<A href="http://service.gm.com/servlets/BlobShtml?ShtmlFile=2022581&psdid=1853&evc=sm#ss1-2022581">

Condition/Concern:

Some customers may comment of the radio clock resetting to 12:00 on the UM7 or UC1 radio. This concern may be very intermittent and difficult to duplicate.

 

<A href="http://service.gm.com/servlets/BlobShtml?ShtmlFile=2022581&psdid=1853&evc=sm#ss2-2022581">

Recommendation/Instructions:

To correct this concern, reprogram the radio with updated calibration released to TIS2WEB on October 1, 2007 or later. As always, make sure your Tech 2® is updated with the latest software version.

 

Please follow this diagnostic or repair 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.

 

 

 

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.

WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION

© Copyright General Motors Corporation. All Rights Reserved.

 

 

Document ID# 2022581

2008 Chevrolet Express

[smitty123]

Thanks!!!

[gmtech4]

Thanks!!!

 

 

it is great that rodger found you a bulletin,but I have to ask the question as to why did you bother to write a post about this and not take it to a dealer for a warrenty repair?

[smitty123]

Thanks!!!

 

 

it is great that rodger found you a bulletin,but I have to ask the question as to why did you bother to write a post about this and not take it to a dealer for a warrenty repair?

 

 

 

I wanted to see if there was a TSB on it since I could not recreate it. I have taken problems into dealers before and if it isn't failing at that time, nothing gets done. As it is, I printed out the TSB # and brought it to the dealer.

I asked the service writer if he ever heard of this problem and he said no. This is a dealer in Marlton, NJ.