Last edit by: IB Advertising
See related guides and technical advice from our community experts:
Browse all: Brakes
- Chevrolet Silverado 1999-2006 GMT800 How to Swap Vacuum Brake Booster with Hydroboost System
Step by step instructions for do-it-yourself repairs.
Browse all: Brakes
how do i know which brake booster my '83 suburban has?
#1
how do i know which brake booster my '83 suburban has?
hi, i have a 1983 gmc suburban 2wd with the 5.7, just got it today.
the brake booster is bad on it and when i called advance to order the new one they told me that there were 2 different brake systems for my truck and i needed to know which one i had.
they said there should be a sticker in the glove box with that information, which was missing from mine.
is there any other way to figure out which booster i need to order?
the brake booster is bad on it and when i called advance to order the new one they told me that there were 2 different brake systems for my truck and i needed to know which one i had.
they said there should be a sticker in the glove box with that information, which was missing from mine.
is there any other way to figure out which booster i need to order?
#4
i did some more research today and think i figured it out, for my application there was a jb5 or a jb7 brake system available, or at least, that's what's available from advance. they are interchangeable but you have to swap the master too. looks like the jb7 is the heavy duty one.
JB5= 6400lb. disc 11.86X1.29 / drum 11.15X2.75 Vacuum-Double Diaphragm
JB6= 7200lb (K20 and others)
JB7= 8400lb. disc 12.50X1.54 / drum 13.00X2.50 Vacuum-Double Diaphragm
JB8= 10000lb. disc 12.50X1.54 / drum 13.00X3.50 Hydraulic-Hydro-Boost
above is what i pulled from a google search, i wonder if the larger rotors and calipers can be interchanged also...
JB5= 6400lb. disc 11.86X1.29 / drum 11.15X2.75 Vacuum-Double Diaphragm
JB6= 7200lb (K20 and others)
JB7= 8400lb. disc 12.50X1.54 / drum 13.00X2.50 Vacuum-Double Diaphragm
JB8= 10000lb. disc 12.50X1.54 / drum 13.00X3.50 Hydraulic-Hydro-Boost
above is what i pulled from a google search, i wonder if the larger rotors and calipers can be interchanged also...
#5
you can look at the codes in the glove box if it still has the sticker in there. if you have a hydro booster then youll have power steering lines going to the booster. for the vacuume booster itll have one vacume line going to it
Thread
Thread Starter
Forum
Replies
Last Post
silverado 1500 2001
Silverado & Fullsize Pick-ups
4
September 3rd, 2014 1:03 PM
kansfan48
News, Concepts, SEMA
0
January 19th, 2014 11:51 AM
DMaxEnvy
Tahoe & Suburban DIY and Useful Threads
1
April 17th, 2011 11:40 AM
BinkysDad
Silverado & Fullsize Pick-ups
3
October 24th, 2006 11:32 PM