Brake question

[jagblazer01]

Did some searching and I can't find anything. I'm getting "Service Brake Booster" pop up on my display. Truck is a 2003 yukon denali. Problem is I have hydraulic brakes on the truck with no booster. I feel like I read somewhere I can bypass something to clear this message. Any ideas?

 

[SnowDrifter]

Curious

That message is thrown if the supplement vacuum pump goes out.

But you obviously don't have one.

Gonna need a full vehicle history for this one

 

[MassHoe04]

Maybe someone swapped-in an ECU that was close, but not close enough on the model year?

 

[Fless]

As @SnowDrifter noted, it would be helpful to have some history. How long have you had it; has any work been done on the truck lately, etc.?

What code is being set to display the brake booster message?

 

[jagblazer01]

I've only had the truck since October. Haven't had a chance to get it on a code reader yet. But other then wheels and tires that were on it when I bought it no mods have been done. I've noticed it has some electrical issues I've been trying to work through but it's a pain lol

 

[Tonyrodz]

I've only had the truck since October. Haven't had a chance to get it on a code reader yet. But other then wheels and tires that were on it when I bought it no mods have been done. I've noticed it has some electrical issues I've been trying to work through but it's a pain lol

Gotta check your grounds, especially if you're in a salty state.

 

[jagblazer01]

Bought the truck in North Texas and I'm currently living in Oklahoma

 

[exp500]

Flush P/S fluid.

 

[Joseph Garcia]

Get the code reader out (or purchase one), and post the codes that you see. Without the codes and some additional information on your truck, we are simply groping in the dark, and that is not helpful to you.

 

[OR VietVet]

Did some searching and I can't find anything. I'm getting "Service Brake Booster" pop up on my display. Truck is a 2003 yukon denali. Problem is I have hydraulic brakes on the truck with no booster. I feel like I read somewhere I can bypass something to clear this message. Any ideas?

Well, like @exp500 said, could be something as simple as flushing the power steering fluid. You said "no booster" but you either have vacuum boost or hydro-boost and I am assuming hydro-boost. Have you checked the brake fluid level in the master cylinder? Flush brake fluid too.