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 02-26-2020, 10:45 AM   #1
72c20customcamper
Registered User
 
72c20customcamper's Avatar
 
Join Date: Jul 2018
Location: Napanoch new york
Posts: 1,988
What is the function of this piece?

My 77 burban. This is on the cowl, strap with what looks like saw teeth.
Attached Images
 
__________________
Mark
72 c20 custom camper Husky edition,66 SS396 Chevelle 1964 Hawk, 63 Avanti,62 lark
1969 AMX ,02 Springer. 03 anniversary Fatboy.
81 Honda automatic 1600 miles
2012 Road Glide Ultra 2015 Honda Goldwing
1968 c20 stepside 1977 Suburban
72c20customcamper is offline   Reply With Quote
Old 02-26-2020, 10:48 AM   #2
rodstored-72
chevy truck fan
 
rodstored-72's Avatar
 
Join Date: Mar 2005
Location: Gilbert, arizona 85298
Posts: 1,439
Re: What is the function of this piece?

not sure.. but it looks like near the same place that on my truck is the "straps" to hold the washer fluid lines from the pump???

good luck!
rodstored-72 is offline   Reply With Quote
Old 02-26-2020, 10:52 AM   #3
72c20customcamper
Registered User
 
72c20customcamper's Avatar
 
Join Date: Jul 2018
Location: Napanoch new york
Posts: 1,988
Re: What is the function of this piece?

Didn't delve any deeper than taking the photo. I'll pull the cowl screens to look closer . Need to wax under there anyway
__________________
Mark
72 c20 custom camper Husky edition,66 SS396 Chevelle 1964 Hawk, 63 Avanti,62 lark
1969 AMX ,02 Springer. 03 anniversary Fatboy.
81 Honda automatic 1600 miles
2012 Road Glide Ultra 2015 Honda Goldwing
1968 c20 stepside 1977 Suburban
72c20customcamper is offline   Reply With Quote
Old 02-26-2020, 11:19 AM   #4
demian5
Registered User
 
demian5's Avatar
 
Join Date: Aug 2016
Location: Lake Forest, CA
Posts: 2,165
Re: What is the function of this piece?

It touches the hood and is a goofy ground I believe.
__________________
"Work hard, use your vacation days."
1970 C15 GMC Long Bed
1986 C20 Scottsdale
1983 K2500 Sierra Classic Suburban 6.2
Instagram: C10sofOC
demian5 is offline   Reply With Quote
Old 02-26-2020, 11:25 AM   #5
Redneck Rydes
Registered User
 
Redneck Rydes's Avatar
 
Join Date: Feb 2016
Location: Trenton,Ontario & South Carolina
Posts: 455
Re: What is the function of this piece?

I am also thinking some kind of ground
Redneck Rydes is offline   Reply With Quote
Old 02-26-2020, 12:42 PM   #6
72c20customcamper
Registered User
 
72c20customcamper's Avatar
 
Join Date: Jul 2018
Location: Napanoch new york
Posts: 1,988
Re: What is the function of this piece?

Quote:
Originally Posted by demian5 View Post
It touches the hood and is a goofy ground I believe.
Quote:
Originally Posted by Redneck Rydes View Post
I am also thinking some kind of ground
Thought that could be too. But what needs to be grounded on the hood? And there is a very strong ground on the hinges . Spring makes a good ground from hood to fender.
__________________
Mark
72 c20 custom camper Husky edition,66 SS396 Chevelle 1964 Hawk, 63 Avanti,62 lark
1969 AMX ,02 Springer. 03 anniversary Fatboy.
81 Honda automatic 1600 miles
2012 Road Glide Ultra 2015 Honda Goldwing
1968 c20 stepside 1977 Suburban
72c20customcamper is offline   Reply With Quote
Old 02-26-2020, 02:49 PM   #7
77 ChevySport
Registered User
 
Join Date: Oct 2010
Location: Central, IL
Posts: 194
Re: What is the function of this piece?

Yes it is a ground strap. Chevy used this on Corvettes that grounded the Air
Cleaner base and the Ignition Shielding. See Picture Below. Larry


Name:  077.jpg
Views: 562
Size:  56.2 KB
77 ChevySport is offline   Reply With Quote
Old 02-26-2020, 02:52 PM   #8
rpmerf
Registered User
 
rpmerf's Avatar
 
Join Date: Feb 2011
Location: Parkville, MD
Posts: 986
Re: What is the function of this piece?

Quote:
Originally Posted by 72c20customcamper View Post
Thought that could be too. But what needs to be grounded on the hood? And there is a very strong ground on the hinges . Spring makes a good ground from hood to fender.
Light mounted on the hood? Pretty sure on my 97, there was a ground strap for the light.
__________________
1970 C20 Custom Camper - 350, TH350
1997 GMC Suburban
1994 Acura Integra GSR
1987 Dodge Daytona Shelby Z
rpmerf is offline   Reply With Quote
Old 02-27-2020, 10:22 AM   #9
72c20customcamper
Registered User
 
72c20customcamper's Avatar
 
Join Date: Jul 2018
Location: Napanoch new york
Posts: 1,988
Re: What is the function of this piece?

Quote:
Originally Posted by rpmerf View Post
Light mounted on the hood? Pretty sure on my 97, there was a ground strap for the light.
No light but when you lift the hood the ground would be cut as it only hits when its closed.
__________________
Mark
72 c20 custom camper Husky edition,66 SS396 Chevelle 1964 Hawk, 63 Avanti,62 lark
1969 AMX ,02 Springer. 03 anniversary Fatboy.
81 Honda automatic 1600 miles
2012 Road Glide Ultra 2015 Honda Goldwing
1968 c20 stepside 1977 Suburban
72c20customcamper is offline   Reply With Quote
Old 02-27-2020, 11:10 AM   #10
mongocanfly
Post Whore
 
mongocanfly's Avatar
 
Join Date: May 2015
Location: Alabama
Posts: 11,028
Re: What is the function of this piece?

Wheres Keith?.....he'll have the answer
I dont think I've ever seen one on a truck before
__________________
Mongo...aka Greg

1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598
Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334
Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563
2013 GMC Z71..daily driver

Last edited by mongocanfly; 02-27-2020 at 11:15 AM.
mongocanfly is offline   Reply With Quote
Old 02-27-2020, 01:07 PM   #11
Keith Seymore
Registered User
 
Keith Seymore's Avatar
 
Join Date: May 2009
Location: Motor City
Posts: 7,957
Re: What is the function of this piece?

Quote:
Originally Posted by mongocanfly View Post
Wheres Keith?.....he'll have the answer
I dont think I've ever seen one on a truck before
It's a ground strap.

It helps with radio function (reduced static as a result of the hood functioning as an antenna).

K
__________________
Chevrolet Flint Assembly
1979-1986
GM Full Size Truck Engineering
1986 - Feb 2019
Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926
My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524
Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/
Keith Seymore is offline   Reply With Quote
Old 02-28-2020, 04:57 PM   #12
rodstored-72
chevy truck fan
 
rodstored-72's Avatar
 
Join Date: Mar 2005
Location: Gilbert, arizona 85298
Posts: 1,439
Re: What is the function of this piece?

Quote:
Originally Posted by Keith Seymore View Post
It's a ground strap.

It helps with radio function (reduced static as a result of the hood functioning as an antenna).

K
KEITH,
Do you know if this is specific to burbs? or is it on all models (trucks) with glass antenna? I don't believe my truck has one...
rodstored-72 is offline   Reply With Quote
Old 02-29-2020, 12:24 AM   #13
mongocanfly
Post Whore
 
mongocanfly's Avatar
 
Join Date: May 2015
Location: Alabama
Posts: 11,028
Re: What is the function of this piece?

Never would have guessed the hood as a antenna..you the man Keith..
__________________
Mongo...aka Greg

1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598
Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334
Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563
2013 GMC Z71..daily driver
mongocanfly is offline   Reply With Quote
Old 02-29-2020, 10:17 AM   #14
Big Chip
Registered User
 
Big Chip's Avatar
 
Join Date: Oct 2017
Location: Roscommon, Michigan
Posts: 38
Re: What is the function of this piece?

Quote:
Originally Posted by rodstored-72 View Post
KEITH,
Do you know if this is specific to burbs? or is it on all models (trucks) with glass antenna? I don't believe my truck has one...

My 79 C35 has it. Antenna is in the glass on mine.
Big Chip is offline   Reply With Quote
Old 02-29-2020, 10:24 AM   #15
mongocanfly
Post Whore
 
mongocanfly's Avatar
 
Join Date: May 2015
Location: Alabama
Posts: 11,028
Re: What is the function of this piece?

My 81 C30 doesnt have one...antenna in glass on mine..
__________________
Mongo...aka Greg

1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598
Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334
Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563
2013 GMC Z71..daily driver
mongocanfly is offline   Reply With Quote
Old 02-29-2020, 10:46 AM   #16
72c20customcamper
Registered User
 
72c20customcamper's Avatar
 
Join Date: Jul 2018
Location: Napanoch new york
Posts: 1,988
Re: What is the function of this piece?

Quote:
Originally Posted by Keith Seymore View Post
It's a ground strap.

It helps with radio function (reduced static as a result of the hood functioning as an antenna).

K
Okay so now I know. Mine has the stupid glass antenna. Great in the flat lands works for **** in the mountains. But it's the original glass .
__________________
Mark
72 c20 custom camper Husky edition,66 SS396 Chevelle 1964 Hawk, 63 Avanti,62 lark
1969 AMX ,02 Springer. 03 anniversary Fatboy.
81 Honda automatic 1600 miles
2012 Road Glide Ultra 2015 Honda Goldwing
1968 c20 stepside 1977 Suburban
72c20customcamper is offline   Reply With Quote
Old 03-01-2020, 09:37 PM   #17
mongocanfly
Post Whore
 
mongocanfly's Avatar
 
Join Date: May 2015
Location: Alabama
Posts: 11,028
Re: What is the function of this piece?

another thing I noticed Mark ..is your hood seal is on the cowl on your 77...my 81 the cowl seal is on the hood...but mine has a hole in the firewall cowl area that looks like its where your strap is mounted..
__________________
Mongo...aka Greg

1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598
Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334
Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563
2013 GMC Z71..daily driver
mongocanfly is offline   Reply With Quote
Old 03-02-2020, 08:15 PM   #18
LTZMAN
Registered User
 
LTZMAN's Avatar
 
Join Date: Nov 2019
Location: Greenville SC
Posts: 52
Re: What is the function of this piece?

1980 and 1981 z28 has it to ground the air induction. my guess a ground for the hood light.
LTZMAN is offline   Reply With Quote
Old 03-09-2020, 11:00 AM   #19
Axle
Registered User
 
Axle's Avatar
 
Join Date: Jul 2011
Location: SW Ontario
Posts: 840
Re: What is the function of this piece?

Quote:
Originally Posted by mongocanfly View Post
Never would have guessed the hood as a antenna..you the man Keith..
The hood is part of the ground plane, if its floating with respect to the other body parts the radio reception will get funky in one way or another as you travel. Think CB antennas, best spot for the antenna is dead center of the roof, provides the best reception/transmission for the antenna to radiate in all directions, vs mirror mounted antenas, or bumper mounted antennas where the ground plane only exists in one direction, rx/dx will favor a specific direction based on where the ground plane is.
Axle is offline   Reply With Quote
Old 03-09-2020, 06:14 PM   #20
hatzie
Moderator

 
hatzie's Avatar
 
Join Date: Oct 2008
Location: Wentworth, NH
Posts: 3,958
Re: What is the function of this piece?

Quote:
Originally Posted by Axle View Post
The hood is part of the ground plane, if its floating with respect to the other body parts the radio reception will get funky in one way or another as you travel. Think CB antennas, best spot for the antenna is dead center of the roof, provides the best reception/transmission for the antenna to radiate in all directions, vs mirror mounted antenas, or bumper mounted antennas where the ground plane only exists in one direction, rx/dx will favor a specific direction based on where the ground plane is.
Thank you.

You can likely attach a braided ground strap from the firewall to a hinge bolt on both sides and get the same result.
__________________
1959 M35A2 LDT465-1D SOLD
1967 Dodge W200 B383, NP420/NP201 SOLD
1969 Dodge Polara 500 B383, A833 SOLD
1972 Ford F250 FE390, NP435/NP205 SOLD
1976 Chevy K20, 6.5L, NV4500/NP208 SOLD
1986 M1008 CUCV SOLD
2000 GMC C2500, TD6.5L, NV4500
2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263
2009 Impala SS LS4 V8


RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...Please include at least the year and model in your threads. It'll be easier to answer your questions.
And please let us know if and how your repairs were successful.
hatzie is offline   Reply With Quote
Reply

Bookmarks

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 -4. The time now is 06:42 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
Copyright 1997-2013 67-72chevytrucks.com