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'03 Silverado Service Brake Booster Message

brute_439

By brute_439
in Ask A GM Technician

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brute_439 New Member

brute_439

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Hello I recently purchased a 2003 Silverado 2500HD Extended cab 4x4 with the 6.0. I had been driving it for about a month and the speedometer quit working . I took it in and they replaced the instrument cluster. I drove it home and everything worked fine for about a week until I started it one morning and it displayed the message SERVICE BRAKE BOOSTER and the message comes up every time the vehicle is started now. Theres plenty of fluid in the resivor and the truck still stops well. The pedal seems to travel just a little more if at all. If you have any suggestion or comments that would help I would greatly appreciate it.

atboley Enthusiast

atboley

Posted
Posted

ive seen this happen before... what happend was when the dealer replace dthe cluster, they got lazy and didnt program it because somtimes you can get away with it, so that cluster isnt set up right for your truck... so many techs were doing that, they actually came out with a bulletin... check it out

 

Subject: Service Brake Booster Message - keywords assist C0136 IPC pedal vacuum #PIT3568B - (07/27/2006)

The Service Brake Booster Message is used to notify the driver of a Supplemental Brake Assist (SBA) concern on vehicles equipped with rear disk brakes and a vacuum brake booster. There have been reports of the Service Brake Booster Message being displayed on vehicles which do not use the SBA system. During normal diagnostics, a DTC C0136 may be present in the IPC. This DTC will not be in eSI if working on a 2004-2006 utility vehicle, due to all utilities use a hydroboost brake systems starting in 2004. Also note that starting in 2005; the Silverado and Sierra no longer use the SBA on vehicles with rear drum brakes and vacuum brake booster. This message could be caused by the IPC not being programmed correctly. If the IPC was replaced on a previous unrelated repair and was not SPS programmed then this message will be displayed after the IPC does not receive a valid health signal from the SBA for 5 consecutive ignition cycles.

 

<a href="#ss2-1850972">

Recommendation/Instructions:

To correct this concern, SPS program the IPC. To check and make sure the vehicle is repaired cycle the ignition to off and run at less 5 consecutive times, delaying in each position at least 30 seconds.

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