I need a GM part # Identified - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Joesjunk** · 11-02-2005, 07:36 PM

Here is the number, 3927088. It says its a gas cap 67-72. I was wanting to know what it fits and if it is chrome.

Thanks in advance, Joe

4tiresngas · 11-02-2005, 09:57 PM

It's my understanding that the 72 tank is slightly different and the gas cap is different also.

HOTFUN · 11-02-2005, 10:27 PM

Joe
My 1972 dated and printed parts book lists a 3927086 cap but no reference to a 3927088#. The cap I found lists for a 70-72, 20 and 30 series and cab and sub with bodyside mld.
That would mean chrome and a non EEC style as found on the 72 10 series.
sorry, Mark

**Joesjunk** · 11-02-2005, 10:44 PM

Mark, Part # 3927086, what exactly does it fit? I have found one of those also. I want one for a 1970 or 1971 1 ton. I also want one for a 72 Blazer 4x4.
Just need to know what #'s I need to look for.

Thanks, Joe

HOTFUN · 11-03-2005, 08:18 AM

Joe
I am at work today but cap #3927086 is the correct chrome cap for a 70, 71, and 72 3/4 and 1 ton cabs and suburbans. I will have to look up that number for the Blazer but all 1972 10 series models used the EEC style cap and there is only one number for those. I have found that one is the hardest to find and the last one I sawon eBay sold about $75 for NOS.
I'll look it up tonight.
Mark

**Joesjunk** · 11-03-2005, 11:01 AM

Thanks for the info Mark!!

ChevLoRay · 11-03-2005, 11:32 AM

Ain't it weird?? I mean, a simple gas cap is one of those things that are not being reproduced and that we want one. Custom Classic Truck magazine did a feature 2-3 years back, on a well-equipped CST. One picture was of the original gas cap, in chrome, and they added that the caps are rare. Boy, do I feel lucky!!! My truck still has the original gas cap, which I boxed up and replaced on 9/11/01, when the gas lines at the stations grew long and there seemed to be "a degree of uncertainty" in the air. Still got the original cap and it is securely stored away.

....think I'll get it rechromed and replace the gasket then use it just for shows.....yeah, right!!

HOTFUN · 11-03-2005, 11:26 PM

Joe
This is right out of the GM parts book printed & revised 9/72.

Chrome cap #3936556 is for: 1970 series 10-30 cab with C.S. w/o
E.E.C. 71-72 Ser. 20-30 cab and series 20-30 fleetside with C.S.

Chrome cap # 3927086 is for: 1970 71 suburban 20 series., 72 ser. 20-30 cab.

Chrome cap #6263474 is for all 72 series 10 models and 72 aux tanks.

This group is very hard to decifer but I believe this is correct for the chrome based on the Custom Sport listing.

Hope this helps.
Mark

**Joesjunk** · 11-03-2005, 11:53 PM

Thanks for all the info Mark.

11-02-2005, 07:36 PM	#1
Joesjunk Senior Member Join Date: May 2001 Location: Independence MO. Posts: 7,702	I need a GM part # Identified Here is the number, 3927088. It says its a gas cap 67-72. I was wanting to know what it fits and if it is chrome. Thanks in advance, Joe __________________ 72 3/4t Custom Deluxe 402/auto 66k Original paint 71 3/4t 4x4 Custom Deluxe 10k original miles Original paint 71 3/4t Cheyenne 402 70k original paint 72 3/4t 4x4 Custom deluxe 72 3/4t 4x4 Custom deluxe 91k original paint 72 Cheyenne/30 Dually 69 Camaro SS396 4-speed 13 GMC 2500HD Duramax I bought new 05 Jeep Wrangler "Willys Edition" 12k miles (I bought new) 85 3/4 ton 4x4 Scottsdale 33k miles original paint 86 1 ton 4x4 SRW Silverado 454 restored 80 1 ton 4x4 SRW Silverado 9,434 original miles!! original paint 95 GMC 1 ton dually 4x4 my dad bought new 95 GMC 3/4 ton 4x4, regular cab 454, 31k original miles 2002 2500HD 4x4 regular cab 6.0L 67k miles 2002 2500HD 4x4 regular cab 8.1L 28k miles 2003 GMC 2500HD 4x4 regular cab Diesel 93k miles 67-72 Parts for sale

11-02-2005, 09:57 PM	#2
4tiresngas An American Soldier Join Date: Feb 2005 Location: Grumolo D' Abadessee, Italy Posts: 503	Re: I need a GM part # Identified It's my understanding that the 72 tank is slightly different and the gas cap is different also. __________________ Dan dan.brue@us.army.mil

11-02-2005, 10:44 PM	#4
Joesjunk Senior Member Join Date: May 2001 Location: Independence MO. Posts: 7,702	Re: I need a GM part # Identified Mark, Part # 3927086, what exactly does it fit? I have found one of those also. I want one for a 1970 or 1971 1 ton. I also want one for a 72 Blazer 4x4. Just need to know what #'s I need to look for. Thanks, Joe __________________ 72 3/4t Custom Deluxe 402/auto 66k Original paint 71 3/4t 4x4 Custom Deluxe 10k original miles Original paint 71 3/4t Cheyenne 402 70k original paint 72 3/4t 4x4 Custom deluxe 72 3/4t 4x4 Custom deluxe 91k original paint 72 Cheyenne/30 Dually 69 Camaro SS396 4-speed 13 GMC 2500HD Duramax I bought new 05 Jeep Wrangler "Willys Edition" 12k miles (I bought new) 85 3/4 ton 4x4 Scottsdale 33k miles original paint 86 1 ton 4x4 SRW Silverado 454 restored 80 1 ton 4x4 SRW Silverado 9,434 original miles!! original paint 95 GMC 1 ton dually 4x4 my dad bought new 95 GMC 3/4 ton 4x4, regular cab 454, 31k original miles 2002 2500HD 4x4 regular cab 6.0L 67k miles 2002 2500HD 4x4 regular cab 8.1L 28k miles 2003 GMC 2500HD 4x4 regular cab Diesel 93k miles 67-72 Parts for sale

11-03-2005, 08:18 AM	#5
HOTFUN Registered User Join Date: Jan 2001 Location: Lincoln, Nebraska Posts: 2,145	Re: I need a GM part # Identified Joe I am at work today but cap #3927086 is the correct chrome cap for a 70, 71, and 72 3/4 and 1 ton cabs and suburbans. I will have to look up that number for the Blazer but all 1972 10 series models used the EEC style cap and there is only one number for those. I have found that one is the hardest to find and the last one I sawon eBay sold about $75 for NOS. I'll look it up tonight. Mark __________________ '66 CST BBW swb fleet 327 fac ac '67 CST 4x4 swb 327 stepside project '72 Cheyenne K20 50k original '72 Cheyenne Super K20 project '73 Sierra swb 4x4 frame off in paint stage '74 Cheyenne Super swb w/16k actual '71 & 72 Cheyenne K10 4x4 swb's '70 426 HEMICUDA conv SHAKER 4 sp Dana 60 '60 Impala conv 327 PG fac ac loaded 3rd owner '72 GMC K2500 4x4 '59 Apache CST BBW fleetside swb 283 '73 ElCamino SS LS1 T56 true SS bucket tach '76 ElCamino SS 52k survivor '87 Grand National 41k True 2nd to last built in 1987. '86 K30 454 SRW fleetside CA since new '88 Trans Am GTA 39k bought new 2018 DEMON plum crazy @ 840HP! "Need for speed"

11-03-2005, 11:32 AM	#7
ChevLoRay Old Skool Club Join Date: Jun 2001 Location: Benton, AR "The Heart of Arkansas" Posts: 10,880	Re: I need a GM part # Identified Ain't it weird?? I mean, a simple gas cap is one of those things that are not being reproduced and that we want one. Custom Classic Truck magazine did a feature 2-3 years back, on a well-equipped CST. One picture was of the original gas cap, in chrome, and they added that the caps are rare. Boy, do I feel lucky!!! My truck still has the original gas cap, which I boxed up and replaced on 9/11/01, when the gas lines at the stations grew long and there seemed to be "a degree of uncertainty" in the air. Still got the original cap and it is securely stored away. ....think I'll get it rechromed and replace the gasket then use it just for shows.....yeah, right!! __________________ 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.

11-02-2005, 10:27 PM	#3
HOTFUN Registered User Join Date: Jan 2001 Location: Lincoln, Nebraska Posts: 2,145	Re: I need a GM part # Identified Joe My 1972 dated and printed parts book lists a 3927086 cap but no reference to a 3927088#. The cap I found lists for a 70-72, 20 and 30 series and cab and sub with bodyside mld. That would mean chrome and a non EEC style as found on the 72 10 series. sorry, Mark __________________ '66 CST BBW swb fleet 327 fac ac '67 CST 4x4 swb 327 stepside project '72 Cheyenne K20 50k original '72 Cheyenne Super K20 project '73 Sierra swb 4x4 frame off in paint stage '74 Cheyenne Super swb w/16k actual '71 & 72 Cheyenne K10 4x4 swb's '70 426 HEMICUDA conv SHAKER 4 sp Dana 60 '60 Impala conv 327 PG fac ac loaded 3rd owner '72 GMC K2500 4x4 '59 Apache CST BBW fleetside swb 283 '73 ElCamino SS LS1 T56 true SS bucket tach '76 ElCamino SS 52k survivor '87 Grand National 41k True 2nd to last built in 1987. '86 K30 454 SRW fleetside CA since new '88 Trans Am GTA 39k bought new 2018 DEMON plum crazy @ 840HP! "Need for speed"

11-03-2005, 11:01 AM	#6
Joesjunk Senior Member Join Date: May 2001 Location: Independence MO. Posts: 7,702	Re: I need a GM part # Identified Thanks for the info Mark!! __________________ 72 3/4t Custom Deluxe 402/auto 66k Original paint 71 3/4t 4x4 Custom Deluxe 10k original miles Original paint 71 3/4t Cheyenne 402 70k original paint 72 3/4t 4x4 Custom deluxe 72 3/4t 4x4 Custom deluxe 91k original paint 72 Cheyenne/30 Dually 69 Camaro SS396 4-speed 13 GMC 2500HD Duramax I bought new 05 Jeep Wrangler "Willys Edition" 12k miles (I bought new) 85 3/4 ton 4x4 Scottsdale 33k miles original paint 86 1 ton 4x4 SRW Silverado 454 restored 80 1 ton 4x4 SRW Silverado 9,434 original miles!! original paint 95 GMC 1 ton dually 4x4 my dad bought new 95 GMC 3/4 ton 4x4, regular cab 454, 31k original miles 2002 2500HD 4x4 regular cab 6.0L 67k miles 2002 2500HD 4x4 regular cab 8.1L 28k miles 2003 GMC 2500HD 4x4 regular cab Diesel 93k miles 67-72 Parts for sale

11-03-2005, 11:26 PM	#8
HOTFUN Registered User Join Date: Jan 2001 Location: Lincoln, Nebraska Posts: 2,145	Re: I need a GM part # Identified Joe This is right out of the GM parts book printed & revised 9/72. Chrome cap #3936556 is for: 1970 series 10-30 cab with C.S. w/o E.E.C. 71-72 Ser. 20-30 cab and series 20-30 fleetside with C.S. Chrome cap # 3927086 is for: 1970 71 suburban 20 series., 72 ser. 20-30 cab. Chrome cap #6263474 is for all 72 series 10 models and 72 aux tanks. This group is very hard to decifer but I believe this is correct for the chrome based on the Custom Sport listing. Hope this helps. Mark __________________ '66 CST BBW swb fleet 327 fac ac '67 CST 4x4 swb 327 stepside project '72 Cheyenne K20 50k original '72 Cheyenne Super K20 project '73 Sierra swb 4x4 frame off in paint stage '74 Cheyenne Super swb w/16k actual '71 & 72 Cheyenne K10 4x4 swb's '70 426 HEMICUDA conv SHAKER 4 sp Dana 60 '60 Impala conv 327 PG fac ac loaded 3rd owner '72 GMC K2500 4x4 '59 Apache CST BBW fleetside swb 283 '73 ElCamino SS LS1 T56 true SS bucket tach '76 ElCamino SS 52k survivor '87 Grand National 41k True 2nd to last built in 1987. '86 K30 454 SRW fleetside CA since new '88 Trans Am GTA 39k bought new 2018 DEMON plum crazy @ 840HP! "Need for speed" Last edited by HOTFUN; 11-03-2005 at 11:27 PM.

11-03-2005, 11:53 PM	#9
Joesjunk Senior Member Join Date: May 2001 Location: Independence MO. Posts: 7,702	Re: I need a GM part # Identified Thanks for all the info Mark. __________________ 72 3/4t Custom Deluxe 402/auto 66k Original paint 71 3/4t 4x4 Custom Deluxe 10k original miles Original paint 71 3/4t Cheyenne 402 70k original paint 72 3/4t 4x4 Custom deluxe 72 3/4t 4x4 Custom deluxe 91k original paint 72 Cheyenne/30 Dually 69 Camaro SS396 4-speed 13 GMC 2500HD Duramax I bought new 05 Jeep Wrangler "Willys Edition" 12k miles (I bought new) 85 3/4 ton 4x4 Scottsdale 33k miles original paint 86 1 ton 4x4 SRW Silverado 454 restored 80 1 ton 4x4 SRW Silverado 9,434 original miles!! original paint 95 GMC 1 ton dually 4x4 my dad bought new 95 GMC 3/4 ton 4x4, regular cab 454, 31k original miles 2002 2500HD 4x4 regular cab 6.0L 67k miles 2002 2500HD 4x4 regular cab 8.1L 28k miles 2003 GMC 2500HD 4x4 regular cab Diesel 93k miles 67-72 Parts for sale



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