Factory auxiliary fuel tanks ? Surely not................

[RSRXION]

Ok guys, I can't stand it anymore. When I bought my hauler I noticed that it had a fuel tank switch mounted just under the edge of the drivers side seat. I just asumed that it was an add on that somebody had installed and since my hauler only had one massive tank under the bed, I removed the switch and threw it away.

Then last week I sold my GMC parts truck to a friend of mine who had a twin GMC with the exception that his truck is a 3/4 ton. As I was looking his GMC over I noticed that it had a pair of aluminum fuel doors on the bedsides and that same funny looking little switch in the same location as my car hauler . Hmmmmmmmmmmm............................

Then today I go pick up my 71 1/2 ton parts truck and to my surprise I notice a pair of little aluminum doors on the bedsides , a couple of tanks visible just under the edges of the bed and that same little switch in the same location !

What gives ? Surely this isn't a factory install................... IS IT ?

Thanks, Dean

[Brad]

I'm not sure if that was a factory option or dealer installed- others more enlightened will chime in shortly. However, I want to install one of these down the road and would certainly appreciate it if you could take some detailed pics of how and where it's located. I have the switch, but have never seen it installed on a truck.

[Longhorn Man]

dealer installeds.

[rage'nrat638]

mine has them and the switch

[RSRXION]

RagenRats bedside openings are much lower on the bedside than mine or my friends' trucks. I'll slide under my parts truck and get you some pics later on this week. Thanks, Dean

[special-K]

Those tanks,usually there`s two,are dealer-installed/aftermarket.GM did start offering a single driver-side auxilary tank in`71.It would have a filler out of the bed near the top and front of the bedside.There will be a matching knob to the left of the instrument panel on a switch that controls the gaude.There`s a little label stuck there that says,"Main/Aux".The valve/switch would be located in the same location or similar to the others described.
Here`s a shot of a factory filler location:

[CPNE]

How's that brake booster setup on that 71 1/2 ton? We spoke about it last week. Also, I'd like to discuss that plastic indicator bezel that is under that tank switch if you're parting this beauty. PM me. Thanks

[RSRXION]

CPNE , I sent you an email on the brake booster . I am sorry to say that this 71 IS NOT a power brake truck as I originally thought. There were several 67-72's being sold and I guess I got them mixed up. I picked this red 71 up this week and found that I was mistaken. Sorry if I got your hopes up. With respect to the switch plate, I am going to part this truck out but I don't know yet if I'll try to sell the whole tank and switch system or sell the pieces. Thanks and sorry, Dean

[dave666693]

It was a dealer option. I just removed mine and filled in the doors in the bed. If anyone is looking for the tanks, doors or valve let me know.

[396muncie]

Originally Posted by dave666693

It was a dealer option. I just removed mine and filled in the doors in the bed. If anyone is looking for the tanks, doors or valve let me know.

Hi, I'm new to the boards, but have been loving the 67-72 trucks for 15 years. I'm parting out a 72 Cheyenne Super with the above mentioned tanks. Inside the one gas lid door is a sticker that says Traveling Tanks out of CA I believe. I was wondering if they were dealer installed. Thanks for verifying!! I would be interested in some parts if you still have your setup. I would need about everything, but with shipping the actual tanks might get expensive. Any idea how much you would want for the setup or everything minus the tanks and how much shipping would be to PA? If you'd rather PM me that's fine. Thanks

[special-K]

Why does everyone call these dealer installed?How do we know that?I say aftermarket.They aren`t part of the accessory program and RV shops installed most.Would you have a dealer do aftermarket mods to your truck?I installed my own on a couple and know of many others that did.No biggy,call them what you like.I call`em aftermarket.

[Rod]

Well how about a picture or two. Note factory option NL2.
I had one with the knob like the radios and such..still have the switch and the wiring actually.

[BLACK AND BLUE 67-72]

Anyone else got dual tanks that have the filler necks under the rear fenders?

[badpeanut]

Originally Posted by BLACK AND BLUE 67-72

Anyone else got dual tanks that have the filler necks under the rear fenders?

I have an aftermarket driver's side tank that fills through the wheel well that I'm getting ready to install on my '72.

[jrb71c20]

Originally Posted by badpeanut

I have an aftermarket driver's side tank that fills through the wheel well that I'm getting ready to install on my '72.

Thats what I found under my right rear wheel well, the cap is rested on the filler neck. I thought I might replace it one day if I can figure out what to replace it with.

[srvivor71]

Originally Posted by BLACK AND BLUE 67-72

Anyone else got dual tanks that have the filler necks under the rear fenders?

Yes, I have filler necks in both left and right wheel wells, with the same floor switch as in the pictures above. I never switched over to either auxiliary tank because the gas in them is probably varnish now. Besides, it costs too much just to fill just the one tank now.

[al's71gmc]

Originally Posted by special-K

Why does everyone call these dealer installed?How do we know that?I say aftermarket.

I thought you ordered them from the dealer when you ordered your truck. When the truck gets to the lot, they installed the tank/tanks, spotlight, or other dealer installed options. ???
Of the 4 londbeds that I have, 2 have dual aux tanks, 1 has single aux, and the other has none.

[402Bowtie]

Does anybody know if they reproduce this sticker? My 72 K20 has this same exact sticker.

If they don't reproduce the sticker, is it possible to peel the sticker off somehow and then remount it after the cab has been blasted and painted....or should the original sticker be taped off while the rest of the cab is blasted and painted?

[jocko]

Originally Posted by 402Bowtie

Does anybody know if they reproduce this sticker? My 72 K20 has this same exact sticker.

If they don't reproduce the sticker, is it possible to peel the sticker off somehow and then remount it after the cab has been blasted and painted....or should the original sticker be taped off while the rest of the cab is blasted and painted?

Check with Pete (DeadheadNM), he repro'ed these awhile back, I've purchased a few, they are perfect.

As all have mentioned above, the only factory installed extra tank setup for trucks was RPO NL2, it came with the fuel gauge selector switch and sticker just above where the left a/c outlet is on the dash and it came with the switch for physically switching the fuel flow on the driver's side door sill so the driver could reach it while driving, and the filler neck and fuel cap coming thru the upper bedside as Tim mentioned.

The aftermarket tanks could be single or dual, dealer installed or owner installed, doors thru the bedside or filler neck inside the rear wheelwell just in front of the tire. I have two in my back yard from my 71 that the guy I sold it to didn't want! They were made by companies like Travel Tanks and there was one named camel tanks or something like that... Here are some factory NL2 tank ref docs:

[jocko]

and here are some aftermarket dual tank instruction manual pics for ref:

[jocko]

and a few additional ones of aftermarket switching arrangements

[Lemield]

Originally Posted by jocko

Check with Pete (DeadheadNM), he repro'ed these awhile back, I've purchased a few, they are perfect.

As all have mentioned above, the only factory installed extra tank setup for trucks was RPO NL2, it came with the fuel gauge selector switch and sticker just above where the left a/c outlet is on the dash and it came with the switch for physically switching the fuel flow on the driver's side door sill so the driver could reach it while driving, and the filler neck and fuel cap coming thru the upper bedside as Tim mentioned.

The aftermarket tanks could be single or dual, dealer installed or owner installed, doors thru the bedside or filler neck inside the rear wheelwell just in front of the tire. I have two in my back yard from my 71 that the guy I sold it to didn't want! They were made by companies like Travel Tanks and there was one named camel tanks or something like that... Here are some factory NL2 tank ref docs:

I have to respectfully disagree that the only aux tank from the factory was RPO NL2.....my 1970 C20 Custom Camper has the 1970 only rear factory aux tank. There are several threads that discuss this...but this one has pictures of mine including the manual switch and dash switch and the option on the spid.

http://67-72chevytrucks.com/vboard/s...d.php?t=330636

Another thread that discusses the option....

http://67-72chevytrucks.com/vboard/s....php?p=2979585

[special-K]

The dealer could have installed them.But no more likely than anywhere else.They aren`t in the GM Accessory program.
The Main/Aux sticker is not reproduced,as far as I know.It would not be hard to have them done,though.It`s hangin`me up when it comes to when I restore mine and want to re-paint the interior.

[396muncie]

Well, like I said, mine is like the very first picture and on the inside of the fuel door it says, "Traveling Tanks" and a city and CA. It's like people took them somewhere to get them installed. Kind of like Zeibart undercoating or Rusty Jones or something. If it was dealer installed I'd be surprised if a GM dealer would put the Traveling Tanks sticker on and help sell them. But maybe GM got a cut of the profits. Who knows?

[Lemield]

My 70 C20 has a factory installed second tank...it's listed on the glove box sticker.