The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 05-15-2014, 04:40 PM   #1
Edahall
Registered User
 
Join Date: May 2011
Location: Goliad, TX
Posts: 672
Hood raises while driving

The hood on both of my Suburbans raise slightly (in the front part of the hood) when driven down the highway. It's noticeable because the front part of the hood becomes higher than the fender gap. Anyone else notice this? Is this normal or is there a fix?
__________________
1990 ¾ ton 4x4 Chevy Suburban
-Cummins Diesel - 12 valve - factory rebuilt
-6 speed bullet proof manual transmission - NV5600
-Gear Vendors Overdrive - HX35 Holset Turbo
-NP205 iron transfer case
-3.73 gears -2" Lift
Edahall is offline   Reply With Quote
Old 05-15-2014, 05:30 PM   #2
Jonboy
Slots go on anything!
 
Join Date: May 2003
Location: Richardson, TX
Posts: 5,957
Re: Hood raises while driving

See if you can pull the latch down and raise the side bumpers.
__________________
1974 Jimmy- 5.3/4L80e/NP241
Jonboy is offline   Reply With Quote
Old 05-15-2014, 09:34 PM   #3
Edahall
Registered User
 
Join Date: May 2011
Location: Goliad, TX
Posts: 672
Re: Hood raises while driving

Quote:
Originally Posted by Jonboy View Post
See if you can pull the latch down and raise the side bumpers.
I've already adjusted the latch down as far as possible.
__________________
1990 ¾ ton 4x4 Chevy Suburban
-Cummins Diesel - 12 valve - factory rebuilt
-6 speed bullet proof manual transmission - NV5600
-Gear Vendors Overdrive - HX35 Holset Turbo
-NP205 iron transfer case
-3.73 gears -2" Lift
Edahall is offline   Reply With Quote
Old 05-15-2014, 10:49 PM   #4
Edahall
Registered User
 
Join Date: May 2011
Location: Goliad, TX
Posts: 672
Re: Hood raises while driving

Anyone else notice this issue or is it just my vehicles?
__________________
1990 ¾ ton 4x4 Chevy Suburban
-Cummins Diesel - 12 valve - factory rebuilt
-6 speed bullet proof manual transmission - NV5600
-Gear Vendors Overdrive - HX35 Holset Turbo
-NP205 iron transfer case
-3.73 gears -2" Lift
Edahall is offline   Reply With Quote
Old 05-16-2014, 09:04 AM   #5
Chevy3+3
Registered User
 
Join Date: Oct 2013
Location: Winfield KS
Posts: 489
Re: Hood raises while driving

Its a normal thing for the two squares I've had. I could be wrong but I think its more common on 81-up. The hoods were weaker in the front center and allow them the outer edges to rise at highway speeds and flap like bird, lol. Both my trucks eventually cracked the metal on the very center of hood from the stress of flapping. In my opinion the front hood structure wasn't built heavy enough

So to answer your question.......Its not just you, lol
__________________
88' Chevy V30 3+3 4x4 Dually 454 TBI/NV4500/NP205
Chevy3+3 is offline   Reply With Quote
Old 05-16-2014, 12:35 PM   #6
84chevyguyid
Registered User
 
Join Date: Feb 2012
Location: Mud Lake, Idaho
Posts: 346
Re: Hood raises while driving

My 87 does that too, sometimes it scares me cause i think my hood is unlatched.
84chevyguyid is offline   Reply With Quote
Old 05-16-2014, 04:09 PM   #7
Rich84
Registered User
 
Rich84's Avatar
 
Join Date: Mar 2012
Location: Woodbury, Ct.
Posts: 1,692
Re: Hood raises while driving

My 70 hood wiggled like a bowl of jello.. but 84 doesn't.
Rich84 is offline   Reply With Quote
Old 05-16-2014, 04:33 PM   #8
willett
Another Day, Another Dollar
 
willett's Avatar
 
Join Date: Nov 2008
Location: North Vancouver, BC
Posts: 1,316
Re: Hood raises while driving

Considered the high speed warning. Mine starts going ape above about 140km/h
__________________
-78 K20 Cheyenne 454 long box, 4" lift, 35" MT's, '84 cab, '80 box

"its hip to be square"
willett is offline   Reply With Quote
Old 05-16-2014, 05:00 PM   #9
MalibuSSwagon
Registered User
 
Join Date: Sep 2009
Location: Weare,NH
Posts: 1,592
Re: Hood raises while driving

thats weird, never noticed the hood flapping on my 86. And I'm not one to miss details like a loose hood!
MalibuSSwagon is offline   Reply With Quote
Old 05-16-2014, 05:28 PM   #10
cam.man67
Registered User
 
cam.man67's Avatar
 
Join Date: Jun 2010
Location: Jefferson, MD
Posts: 2,397
Re: Hood raises while driving

I thought that was a feature on this era truck.
__________________
'68 Dodge Dart 270, 225, 904, 2.76--"Lucy"
1996 Gmc 1500 Z71, 350, 4l60e, 3.73s
1995 Jeep Wrangler Rio Grande 2.5, AX5, 4.10s
1989 Toyota Pickup 22re, auto, 3.73
cam.man67 is offline   Reply With Quote
Old 05-16-2014, 08:02 PM   #11
Greenlee
Registered User
 
Greenlee's Avatar
 
Join Date: Jun 2004
Location: El Lago, TX
Posts: 1,668
Re: Hood raises while driving

Mine moves a little also. I've owned several of these trucks and this is the first one I've noticed it. I assumed I had something adjusted wrong when I put the hood on after paint. I replaces all of the little rubber stops and had the latch off. To tell the truth I don't remember any adjustment in the latch, but the rubber stops are adjustable.
Greenlee is offline   Reply With Quote
Old 05-17-2014, 04:41 AM   #12
Burmanater
Registered User
 
Join Date: Mar 2014
Location: Pandora, Ohio
Posts: 56
Re: Hood raises while driving

I've got mine adjusted to a spot that's just right and the hood sits even and it still comes up. Gotta remember we got the aerodynamics of a brick so your front end bluntly forces a lot of air around. A lot of it comes in between the hood and grill panel and the airflow raises the hood.

A buddy of mine made a rubber strip that was like a t and sandwiched it in between the hood and grille every time he closed the hood. You could hardly tell it was there but man did it make a difference with hood flop. Check all your gaps and stuff too.
Burmanater is offline   Reply With Quote
Old 05-17-2014, 05:52 AM   #13
ont_guy_38
Registered User
 
ont_guy_38's Avatar
 
Join Date: Jul 2007
Location: Ontario Canada
Posts: 1,006
Re: Hood raises while driving

I would be checking for cracks around the latch on the hood just to make sure. Is it a aftermarket hood by any chance maybe? If adjusted properly, it shouldn't do this, if you have adjusted the latch properly you also have to have tension on the bumpers as stated earlier or it will just rock in the middle.
__________________

1985 C10
2004 Avalanche
ont_guy_38 is offline   Reply With Quote
Reply

Bookmarks


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 -4. The time now is 05:29 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com