What are the differences in chevy Gmc cabs - The 1947 - Present Chevrolet & GMC Truck Message Board Network

70blackfish · 10-08-2012, 02:24 PM

Mine is a 1969 gmc swb. Are there changes between years and Chevys, 68-72
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Tomahawk30 · 10-08-2012, 02:39 PM

Someone will chime in if I'm wrong, but I'm pretty sure the cabs are identical through the years, with only minor differences for interior features (rear-view mirror mounting, headliner installation slots, small rear window on most 67s, etc...).

ChevLoRay · 10-08-2012, 02:39 PM

Badging is the difference inside and outside of the cab.

Tomahawk30 · 10-08-2012, 02:41 PM

There's also the difference in high-hump versus low-hump, and column versus floor shift. Forgot about that. All of the 4x4s and I think manual transmission 2wd will have a high hump, and the 2wd autos have the low. Not 100% on that though.

Tomahawk30 · 10-08-2012, 02:51 PM

I don't think I answered the original question very well... There are some cab variations for different models and trim packages, but the GMC and Chevy versions of those models are the same. No differences based on MAKE.

mgkgmc · 10-08-2012, 03:04 PM

Man I really like that GMC wish I could have found that one.

CC69Rat · 10-08-2012, 03:18 PM

Minor difference in the 72 doors. There is a small indention in the upper edge for the thing that holds the vent window, and 72 (I think?) the rear view mirror mount changed from the roof mount down to the windshield .. (I think?)

But other than that, just the high hump / low hump differences is all I'm aware of.

**john** · 10-08-2012, 04:06 PM

The 67-70 trucks have a throttle rod and 71-72 trucks have a cable.

cedorris · 10-08-2012, 06:32 PM

Between years there are a few difference as noted above PLUS:

Rear view mirror mounting location - in 72 the mirror was mounted to the windshield. All other years will have mounting holes on the roof.

Fuel lines - There are differences in fuel line holes in the cab for 71-72 for EVAP stuff (I may be a bit off on this. Can anyone verify?)

I know 1972 had a pressure relief valve built into the door jam. Not sure what year this started, but I know it was 1970 or after.

Crash_OK · 10-08-2012, 06:39 PM

Location of parking brake firewall hole is different for 69-72 from 67-68.

black_sheep454 · 10-08-2012, 06:58 PM

Quote:

Originally Posted by Crash_OK

Location of parking brake firewall hole is different for 69-72 from 67-68.

The wiring harness/fuse block is also different for the same reason.
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cleanfreak · 10-09-2012, 06:27 PM

seen a couple threads like this , no one mentions the front windshield surround is different on 67-68 , 69 up is missing the 'indent' at the top where the rubber sits.

ChevLoRay · 10-09-2012, 07:21 PM

But, I think the original question was about differences between GMC and Chevy cabs. Aside from badging, it doesn't matter. VIN's will differentiate whether it is a GMC or a Chevy, but not the sheet metal on the cab. Trim items and options were available, regardless of brand.

There are drivetrain differences and suspensions that differ, but aside from the 305 V-6 in the early GMC's, which Chevy didn't get, there is very little. But, sheet metal is the same as far as the cab (and doors) are concerned.

10-08-2012, 02:24 PM	#1
70blackfish Registered User Join Date: Oct 2012 Location: Newhall CA Posts: 1,195	What are the differences in chevy Gmc cabs Mine is a 1969 gmc swb. Are there changes between years and Chevys, 68-72 Posted via Mobile Device Attached Images

10-08-2012, 02:39 PM	#2
Tomahawk30 Registered User Join Date: Jun 2010 Location: Russellville, KY Posts: 956	Re: What are the differences in chevy Gmc cabs Someone will chime in if I'm wrong, but I'm pretty sure the cabs are identical through the years, with only minor differences for interior features (rear-view mirror mounting, headliner installation slots, small rear window on most 67s, etc...). __________________ 1979 Silverado C10 Shortbox - Photo Album 1977 Silverado K20 Camper Special - Photo Album 1972 C10 Custom Deluxe Highlander - sold 1971 Cheyenne Super Longhorn -sold 1972 Cheyenne Super SWB 4x4 -sold, bought back, sold again... I'm dumb. 1970 Chevy C10 SWB "Sprout" -sold 1972 Cheyenne K20 -sold 1969 GMC Shortbox Stepside 4x4 -sold 1972 GMC Jimmy 4x4 -sold

10-08-2012, 02:39 PM	#3
ChevLoRay Old Skool Club Join Date: Jun 2001 Location: Benton, AR "The Heart of Arkansas" Posts: 10,880	Re: What are the differences in chevy Gmc cabs Badging is the difference inside and outside of the cab. __________________ Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was.

10-08-2012, 02:41 PM	#4
Tomahawk30 Registered User Join Date: Jun 2010 Location: Russellville, KY Posts: 956	Re: What are the differences in chevy Gmc cabs There's also the difference in high-hump versus low-hump, and column versus floor shift. Forgot about that. All of the 4x4s and I think manual transmission 2wd will have a high hump, and the 2wd autos have the low. Not 100% on that though. __________________ 1979 Silverado C10 Shortbox - Photo Album 1977 Silverado K20 Camper Special - Photo Album 1972 C10 Custom Deluxe Highlander - sold 1971 Cheyenne Super Longhorn -sold 1972 Cheyenne Super SWB 4x4 -sold, bought back, sold again... I'm dumb. 1970 Chevy C10 SWB "Sprout" -sold 1972 Cheyenne K20 -sold 1969 GMC Shortbox Stepside 4x4 -sold 1972 GMC Jimmy 4x4 -sold

10-08-2012, 02:51 PM	#5
Tomahawk30 Registered User Join Date: Jun 2010 Location: Russellville, KY Posts: 956	Re: What are the differences in chevy Gmc cabs I don't think I answered the original question very well... There are some cab variations for different models and trim packages, but the GMC and Chevy versions of those models are the same. No differences based on MAKE. __________________ 1979 Silverado C10 Shortbox - Photo Album 1977 Silverado K20 Camper Special - Photo Album 1972 C10 Custom Deluxe Highlander - sold 1971 Cheyenne Super Longhorn -sold 1972 Cheyenne Super SWB 4x4 -sold, bought back, sold again... I'm dumb. 1970 Chevy C10 SWB "Sprout" -sold 1972 Cheyenne K20 -sold 1969 GMC Shortbox Stepside 4x4 -sold 1972 GMC Jimmy 4x4 -sold

10-08-2012, 03:04 PM	#6
mgkgmc Registered User Join Date: Dec 2007 Location: Glendale Arizona Posts: 1,354	Re: What are the differences in chevy Gmc cabs Man I really like that GMC wish I could have found that one.

10-08-2012, 03:18 PM	#7
CC69Rat Registered User Join Date: Jan 2011 Location: Chattanooga TN Posts: 6,209	Re: What are the differences in chevy Gmc cabs Minor difference in the 72 doors. There is a small indention in the upper edge for the thing that holds the vent window, and 72 (I think?) the rear view mirror mount changed from the roof mount down to the windshield .. (I think?) But other than that, just the high hump / low hump differences is all I'm aware of. __________________ Chad 1967 C10 SWB - Project Savannah - 6.0/4L80 Currently underway 1968 C10 SWB - TOTY 2018, 50th Anniversary Tribute Project * Sold * Pride and Joy 1986 Silverado Short Fleet - Scarlet Sold 1985 Silverado Short Fleet Sold 2022 Jeep Gladiator Mojave 2001 Jeep Cherokee XJ 4x4 - Lifted, Built 1992 Jeep Cherokee XJ 4x4 - Lifted 2013 Honda Accord EX-L v6 Coupe 6spd (wife's ride)

10-08-2012, 04:06 PM	#8
john member #16 Join Date: Dec 1999 Location: Yuba City Ca. Posts: 3,618	Re: What are the differences in chevy Gmc cabs The 67-70 trucks have a throttle rod and 71-72 trucks have a cable. __________________ john http://67-72chevytrucks.com/vboard/showgroups.php board vendors http://www.flickr.com/photos/1745471...7602865984234/

10-08-2012, 06:32 PM	#9
cedorris 1972 Chevy Cheyenne Super Join Date: Feb 2009 Location: Oklahoma City, OK Posts: 302	Re: What are the differences in chevy Gmc cabs Between years there are a few difference as noted above PLUS: Rear view mirror mounting location - in 72 the mirror was mounted to the windshield. All other years will have mounting holes on the roof. Fuel lines - There are differences in fuel line holes in the cab for 71-72 for EVAP stuff (I may be a bit off on this. Can anyone verify?) I know 1972 had a pressure relief valve built into the door jam. Not sure what year this started, but I know it was 1970 or after. __________________ -Clayton 1972 Cheyenne Super LWB 350 - farm truck restore project - twitter @oldgreen

10-08-2012, 06:39 PM	#10
Crash_OK Registered User Join Date: Nov 2011 Location: Edmond, OK. Posts: 1,362	Re: What are the differences in chevy Gmc cabs Location of parking brake firewall hole is different for 69-72 from 67-68. __________________ Mark ----------------------- Crash's 69 4x4 SWB Crash's Roof over Lake Home Crash's 1988 Land Cruiser Build

10-09-2012, 06:27 PM	#12
cleanfreak Registered User Join Date: Oct 2009 Location: port robinson ontario canada Posts: 400	Re: What are the differences in chevy Gmc cabs seen a couple threads like this , no one mentions the front windshield surround is different on 67-68 , 69 up is missing the 'indent' at the top where the rubber sits.

10-09-2012, 07:21 PM	#13
ChevLoRay Old Skool Club Join Date: Jun 2001 Location: Benton, AR "The Heart of Arkansas" Posts: 10,880	Re: What are the differences in chevy Gmc cabs But, I think the original question was about differences between GMC and Chevy cabs. Aside from badging, it doesn't matter. VIN's will differentiate whether it is a GMC or a Chevy, but not the sheet metal on the cab. Trim items and options were available, regardless of brand. There are drivetrain differences and suspensions that differ, but aside from the 305 V-6 in the early GMC's, which Chevy didn't get, there is very little. But, sheet metal is the same as far as the cab (and doors) are concerned. __________________ Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was.

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