locked rotor issue:heat? - TerrainForum.net: GMC Terrain Forum
 1Likes
Reply
 
LinkBack Thread Tools
post #1 of 17 (permalink) Old 07-20-2019, 10:22 AM Thread Starter
Jr. Member
 
Join Date: Jul 2018
Posts: 61
locked rotor issue:heat?

got bad vibration at 55mph. seemed fine all week at <45mph
got home, lifted front, idled in gear, pass wheel is locked.
let it sit for 2hrs. wheel spins freely.
so, heat issue? slightly wonky rotor? caliper slide pins dont like getting hot?
sticky caliper piston? failed internal rubber brake hose?
i "think" it stops straight when i stab brakes. as in no left/right pulling.
cavell is offline  
Sponsored Links
Advertisement
 
post #2 of 17 (permalink) Old 07-20-2019, 11:51 AM
Full Member
 
Join Date: Mar 2015
Location: Canada
Posts: 249
Caliper is bad. Very common for them to lock on when hot and then release as they cool down.

Now - 2018 Equinox 2LT 2.0T AWD
Was - 2015 Equinox 1LT 3.6 AWD
mcg75 is offline  
post #3 of 17 (permalink) Old 07-20-2019, 11:55 AM Thread Starter
Jr. Member
 
Join Date: Jul 2018
Posts: 61
if i can push in pistons that does not mean it is ok?
caliper is expanding. rotor is expanding. caliper slides. so pistons are issue?
could be a hose issue too. my vue had restricted hose last yr.
what are the odds. 2 identical or very similar issues on 2 different gm rigs
new hose fixed my vue. did not touch caliper. that kinda tells me it was hose.
though i sold vue 3 days later. and never heard back from buyer if they had brake issue
Attached Images
File Type: jpg 566d713f8f070cf654fc65394ab166c867e844e5.jpg (387.2 KB, 11 views)

Last edited by cavell; 07-20-2019 at 12:02 PM.
cavell is offline  
Sponsored Links
Advertisement
 
post #4 of 17 (permalink) Old 07-20-2019, 04:49 PM Thread Starter
Jr. Member
 
Join Date: Jul 2018
Posts: 61
ok. tried to bleed RF caliper. am using hose/bottle method. open bleeder. and it takes 5-8 sec for pedal to reach floor. LOTS of effort is required to push it down. had 2nd person push pedal and i watched tube and fluid is coming out as bottle is filling but it is so slow it wont push air bubble out of hose. did not try any other wheel
cavell is offline  
post #5 of 17 (permalink) Old 07-20-2019, 05:13 PM
Full Member
 
Join Date: Mar 2015
Location: Canada
Posts: 249
Hose failure is always a possibility but it's far more common for the caliper itself to be bad.

You seem to be mechanically inclined so buy a hose and try it first. They are fairly cheap.

Now - 2018 Equinox 2LT 2.0T AWD
Was - 2015 Equinox 1LT 3.6 AWD
mcg75 is offline  
post #6 of 17 (permalink) Old 07-20-2019, 07:30 PM Thread Starter
Jr. Member
 
Join Date: Jul 2018
Posts: 61
Loosened fitting from steel line to flex hose and pedal drops much faster. Ordered 2 from amazon. $20 w/2day delivery.
cavell is offline  
post #7 of 17 (permalink) Old 07-20-2019, 08:24 PM
Theta GOD!
 
Join Date: Jan 2010
Posts: 9,480
Gotta love Amazon.

2018 Equinox LT1 1.5 L 4 cyl, AWD, S/R Cajun Red Tintcoat/Black

2010 Equinox LTZ 2.4 L 4 cyl, FWD, S/R Cardinal Red/Black
RIT333 is offline  
post #8 of 17 (permalink) Old 07-21-2019, 11:31 AM
Theta Guru
 
Join Date: Feb 2011
Posts: 3,091
Shouldn’t you have tried disconnecting the *other* end and pumping fluid *through* the hose?
buggsy likes this.

2011 Equinox 1LT (new Jan 2011): Summit White / 3.0 L V6 / FWD / Pioneer Stereo / 18" Wheels / 131.6k miles [14-JUN-2019]

2002 Impala 1LT (new Jun 2002): Summit White / 3.4 L V6 / FWD / Cassette-CD Combo /222.5k miles [13-JUN-2019]
Colt Hero is offline  
post #9 of 17 (permalink) Old 07-21-2019, 08:11 PM
Theta GOD!
 
Join Date: Jan 2010
Posts: 9,480
My thoughts exactly, Colt.

2018 Equinox LT1 1.5 L 4 cyl, AWD, S/R Cajun Red Tintcoat/Black

2010 Equinox LTZ 2.4 L 4 cyl, FWD, S/R Cardinal Red/Black
RIT333 is offline  
post #10 of 17 (permalink) Old 07-21-2019, 10:25 PM Thread Starter
Jr. Member
 
Join Date: Jul 2018
Posts: 61
I can push fluid from MC to wheel. How do I push fluid from wheel back thru hose if pistons are basically fully seated? As pads are new?
cavell is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the TerrainForum.net: GMC Terrain Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome