My booster is now making a hissing noise

2006 GMC ENVOY
202,120 MILES
Avatar
LAMARTHOLLMAN
  • MEMBER
  • 1 POST
Just replaced from end pads and rotors both sides. My booster is now making a hissing noise
Apr 21, 2018 at 10:53 PM
Avatar
KASEKENNY
  • ✓Experienced Mechanic
  • 18,907 POSTS
Yeah, normally the hissing is a leaking diaphragm so you could rebuild it but it is easier and normally just as cheap to replace it.

Below is the process from the manual on how to replace this. Please let us know if you have questions with this.

Thanks
Images (Click to enlarge)
Attached Media
Attached Media
Attached Media
Attached Media
Apr 9, 2021 at 12:51 PM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question