Nnbs Brake Light Tsb

[satisfied1999]

Hi guys,

 

For some reason I cannot get search to work on the forum this morning. My truck is at the dealer this morning and when they called me back I wanted to tell them about the TSB for the brake lights shutting off while one's foot is still on the brake. I know there is a thread for this but I couldn't find it anywhere.

 

If anyone could link me there or provide the TSB number I would appreciate it!

 

Thanks

[satisfied1999]

Hi guys,

 

For some reason I cannot get search to work on the forum this morning. My truck is at the dealer this morning and when they called me back I wanted to tell them about the TSB for the brake lights shutting off while one's foot is still on the brake. I know there is a thread for this but I couldn't find it anywhere.

 

If anyone could link me there or provide the TSB number I would appreciate it!

 

Thanks

 

I was finally able to find it via Google.

 

Thanks...

 

TSB Number:08-08-42-003NHTSA Number:10026005TSB Date:July 1, 2008Date Added to File:September 23, 2008Failing Component:Exterior Lighting:Brake Lights:SwitchSummary:GMC: stop lamps intermittently turn off after coming to a complete stop while still having pressure on brake pedal (replace stop lamp switch).

[MS3DALE]

#08-08-42-003: Stop Lamps Intermittently Turn Off After Coming to a Complete Stop While Still Having Pressure on Brake Pedal (Replace Stop Lamp Switch) - (Jul 23, 2008)

 

 

Subject: Stop Lamps Intermittently Turn Off After Coming to a Complete Stop While Still Having Pressure on Brake Pedal (Replace Stop Lamp Switch)

 

 

Models: 2007-2008 Cadillac Escalade, Escalade ESV, Escalade EXT

 

2007-2008 Chevrolet Avalanche, Silverado, Suburban, Tahoe

 

2007-2008 GMC Sierra, Yukon, Yukon Denali, Yukon XL, Yukon Denali XL

 

 

Condition:

Some customers may comment on the stop lamps turning off prior to the brake pedal reaching the fully released position. Some customers may also comment on the stop lamps turning off while having light pressure on the brake pedal.

 

Some customers with Integrated Trailer Brake Control (ITBC) may comment that the electronic trailer brakes disengage after the vehicle has come to a complete stop. This disengaging of the trailer brakes coincides with the stop lamps turning off.

 

Cause:

This condition may be caused by not enough pressure being applied to the stop lamp switch to keep the brake lights on.

 

Correction:

Technicians are to replace the stop lamp switch. The new stop lamp switch has a reduced internal spring apply force, which will allow the lamps to stay on with less applied brake force.

 

Refer to SI for Stop Lamp Switch replacement procedures.

Use the new Stop Lamp Switch, P/N 25991704.

Parts Information

Part Number - 25991704

Description - Switch, Stop Lamp

Qty - 1

[y2kz71]

my modified spring is still working perfectly

[Ranger]

I have the replacement switch sitting in my glovebox, can't figure out how the hell to get the old one off...And my dealer won't replace it cause it's "functioning as designed" but I still see the lights go off way before the brakes do...

[68haywagon]

I have the replacement switch sitting in my glovebox, can't figure out how the hell to get the old one off...And my dealer won't replace it cause it's "functioning as designed" but I still see the lights go off way before the brakes do...

 

The new one is not much better. My 09 is just as bad as my 07 was. I'm going to modify mine like y2kz71.

 

Mike

[Raymond Lowe]

I have the replacement switch sitting in my glovebox, can't figure out how the hell to get the old one off...And my dealer won't replace it cause it's "functioning as designed" but I still see the lights go off way before the brakes do...

 

 

Clean/vacuum your work area under the pedals. You have to pop the tabs to split the switch in two on your old one to remove it and on the new one to install it. Study your new switch to get an idea how to go about it before you dive into the job. I seem to recall one bolt under their but am not sure whether it was really neccessary to remove it. You should be able to figure it out. Difficulty - easy to moderate depending on your skill level. 30 minutes if its your first time.

[Raymond Lowe]

I have the replacement switch sitting in my glovebox, can't figure out how the hell to get the old one off...And my dealer won't replace it cause it's "functioning as designed" but I still see the lights go off way before the brakes do...

 

The new one is not much better. My 09 is just as bad as my 07 was. I'm going to modify mine like y2kz71.

 

Mike

 

 

Just because it's an 09, doesn't mean it has the switch with the lighter spring. If you have a look at it, the new switch has a white body, the standard heavier spring version is black.

[satisfied1999]

Thanks for the info.

 

Dealer ordered me a new one yesterday....they will install it when my other door lock actuator comes in.

 

They also ordered all of the parts for the seat lint TSB. Hope they do a good job. I was told this was the first one they had done.