The Diesel Page Forums

2019 - TDP's 23rd Anniversary
What's New | Feature Articles | Product Reviews | Member's Area | Free Forum Registration
Duramax 6600 Diesel Page | Advertiser's Section | Classified Ads | The Diesel Page - Publications

Go Back Forums > The Diesel Page Forums > 6.2L Diesel
Register FAQ Members List Photo Album Mark Forums Read

6.2L Diesel 1982-93 6.2L Diesel - Welcome to the Internet's first discussion forum for the 6.2L engine.

Thread Tools Display Modes
Old 05-05-2019, 05:24 PM
Join Date: May 2019
Location: Salem Oregon
Posts: 1
Default 83 GMC 4X4 power steering and power brakes issuse

Hey y’all new to the 6.2L world having some issues with the truck and need help so power steering and brakes only work for the first 5 sec after firing it up the brakes sometimes longer I replaced the fluid and belts still nothing thanks in advance
Attached Images
File Type: jpg 03BF91EB-762A-405B-BCE0-C75621C1602D.jpg (19.7 KB, 5 views)
Reply With Quote
Old 05-05-2019, 08:54 PM
DmaxMaverick's Avatar
DmaxMaverick DmaxMaverick is offline
Join Date: Apr 2001
Location: CA
Posts: 12,317

Welcome aboard!

Is this a "new" problem? Or did it only start after the fluid change? Air in the system will cause issues with the hydroboost unit pressure regulation, and takes a while to bleed out all of it. Symptoms should improve while it bleeds, but it can be intermittent in the meanwhile. A hard stand on the brake pedal should strain the system. You should hear fluid passage, and feel it in the pedal. The pedal resistance should increase, but will go all the way if you stand on it hard enough (should be a lot of feel and squeal, if you do). The pump should also strain. If nothing happens, or the pedal just stops hard before about mid-stroke, read on....

You've eliminated the simple stuff, and you can also count out the steering gear box. That leaves the pump or the hydroboost unit, and it could be either. I suggest looking for the most leaks, and start there. Probably the HB unit, though.
1985 Blazer 6.2
2001 GMC 2500HD D/A
2014 Chevy Cruze Diesel - Fabulous car, no problems at all, but sold Nov. 2016 @ 55K miles.
Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT -7. The time now is 03:53 AM.

Powered by vBulletin® Version 3.8.2
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Copyright 1996-2019 by - All Rights Reserved