brake light on dash

[Rookie]

What would cause it to light up off and on? It just started coming on a couple of days ago. I thought it may be the park brake sticking but that didn't seem to be the cause. Fluids are all up...just wondering what to start looking at...


Oh and I finally made 200,000 miles.I have the picture somewhere. Only took 11 years

 

[Patrick Feeley]

Vacuum Pump! Cheers!

 

[bushpilot]

low brake fluid...which probably means you need to check / replace
the brake pads.

 

[Crumm]

Weak vacuum pump is the normal culprit.

 

[MADVAN]

Weak vacuum pump is the normal culprit.

Or the vac switch itself.

Bill

 

[Rookie]

Thanks for the suggestions. It's having a service this weekend so I'll have to chance to check them out. I know I'm getting close for rear brakes with 203k on the original shoes.

 

[hheynow]

To check the vacuum pump unhook the hose to the brake booster and attach a vacuum gauge to the hose. Start the truck and apply the brakes. If the vacuum is greater than 20 inches it's good. If very low it's bad.

 

[Rookie]

To check the vacuum pump unhook the hose to the brake booster and attach a vacuum gauge to the hose. Start the truck and apply the brakes. If the vacuum is greater than 20 inches it's good. If very low it's bad.

Perfect, thanks...

Ron