spare tire, cabinets,bed,couch,refer
http://www.gmcmhphotos.com/photos/showgallery.php?cat=3931 counter, couch

http://www.gmcmhphotos.com/photos/showgallery.php?cat=4373 sliders

rear cabinet

http://www.gmcmhphotos.com/photos/showgallery.php?cat=3159 tool  box, under dinette

counter, spread
all over the coach
http://www.california.com/%7Eeagle/list.html#projects grass mat, driver seats, etc
OEM special cabinets
under refer
tool box, cabinets.

battery tray
battery tray template



battery tray
cabinet end caps


Here are modifications to an existing barn to make head room for a GMC

Dimentions for a GMC  Garage
1. Since I want this structure to add value to my home when the time comes to move on.  What length coach is common in modern class A's? So that someone less enlightened (someone with an SOB) would be attracted to purchasing my home at some future date? What would be a reasonable dimension so that there was still some room to walk in front of and in back of an SOB in the neighborhood of $100K?

Majority of the Bigger Class A coaches today are 34' to 40' size.  And if you had the 44' style you be living in it so I think we would rule that size out.  So that makes your length say about 45' deep.  As for the width it depends on how much stuff, oops treasure that you want to put in it.  Remember the amount of treasure will fill the available space at some future time.  I would do 40' wide for myself.

2. "Pickles The '77 Palm Beach" has both a roof air and a pod.  What size of roll up door should I spec. 12'?  Again some consideration must be given to the unenlightened.

The best door that would fit all sized would be a 12 X 12 door.  This would mean that you would require at least 13' side walls.

3. I would really like to have a pit.  I know some of you have them. What are reasonable width, length and depth dimensions?  I don't think the pit needs to be too long because one can back in if working on the rear.  I am primarily interested in access to the front-end components underneath.  Engine, Transmission and such.

I have seen 2 pits personally at GMC owners homes.  One was 3' wide by 5' deep by 24' long and the other was 3' 6" wide by 5' deep by 25' long.  Remember that the position in the garage will determine  how you will use it.  Both had steps the were at the back of the garage.  GMC Netter Heinz Wittenbecher commented that he didn't think that he would need a pit more that 16' but in the end constructed a longer one.  His comments were:
"The original thought during construction was that it would not be a hassle to turn the coach around as needed. As it turned out it's more of a hassle in real life.
I have to navigate into the garage via my regular driveway in front of the house. Didn't want to cut any trees to get a straight shot in from the street. It's real easy to back it in but sure takes some wiggling around to get back out when nosing it in. Hence the partially out when the weather is nice." You can go to his sit at:

I will have to build this in stages.  Starting with concrete.  My brother the contractor suggests a short wall that runs around the perimeter of the cement floor and the walls will rise up off of that wall.  Something about keeping moisture out. Keep smiling, Mark

What ever the building codes in your area and zoning will determine the construction methods that will be required.  If your brother is a contractor then you have a leg up and should not have any problems. 
Good Luck! J.R. Wright


Almost nothing harms our GMCs' more that leaving them out in the weather.  I went looking for a Barn to put over my GMC.  I don't say cover because that could be a canvas bag to an articulated roof on the garage.  I found that there are more  configurations that you could imagine.  They stand alone, lean on the house, have multiple stalls, fully inclosed, one sided and roofs of all sorts of materials.

I found that the least expensive and most common were covers made from EMT  conduit with metal roofing.  The most competitive  were the 12 X 20 X 7 covers made for cars and they were priced from $500 to$800 dollars.  When this same style was built large enough for the GMC, the price went up to about $2,000.

I came up with the following method of making the cheaper shelter fit the GMC.  The secret is that 2" EMT conduit has a 2" interior diameter (ID) and that 2" automobile exhaust pipe has a 2" Outer Diameter (OD) Short sections of exhaust pipe can be used for interior couplings to connect EMT together.  Now it is possible to make the cover , longer, higher,shorter,wider, etc using EMT that costs about $1 per foot.

The following pictures show a Marlene's commercial cover that protects Jim. (don't confuse Jim the coach with Bud the husband) and shows  how the finished product should look.  The second picture is a low cost cover that I am stretching to cover my GMC.  If you look carefully, you will see the commercial cover is very modular with joints in all dimensions so that it is possible to stretch the cover in any direction.

The completed cover can be hooked to the ground with spikes, cement, or tied to a building.  The base of the cover can be made from Unistrut and the clips that are used to hold the "2 EMT.  The whole structure can be torn down and removed if you want to change it or move it, since it is screwed together with self-drilling bolts.   The entire cover could be built form parts from the building supply if you have a way to bend the rafters, or want a 45 degree roof.

I hope someone finds this useful, it took me a long time to find the matching parts, but I think I am on the road now...gene


Charles Alumbaugh
More Products

I have two types of hitches available. One comes through the center of the rear bumper and the other through the rear of the bumper at the bottom. These hitches can be made to be flush or extend out the rear a few inches which mine does on my 76 Royale. They bolt on at the rear cross member and foward of the rear cross member to the frame. The second hitch which I mentioned also comes with a plate which takes the place of  the plate which holds the center part of the rear bumper and is bolted there also.

 The price for either one of these hitches is  $250.00 and I will pay all shipping charges.If more info is needed please e-mail me or call. Wayne

 Wayne Alumbaugh
 7000 Glen Hills Rd
 Forth Worth, Tx 76118

So you think nothing remains to add to or change on your GMC (fat chance of that). GMC owners have implemented some clever ideas, shown in the following pictures. I am sorry I do not have the names of all the coach owners. If you know the owners please E-mail me and I will update the article. We saw most of these upgrades at the Las Vegas and Petaluma conventions.

click on thumbnails for larger pictures

Justin Hill's Dinette to Double Bed Conversion

Justin Hill's Engine Compartment Fire Supression System

Click for detail If you look close at this picture, you can see the water hose inside the hubcap of the spare tire. Chuck Aulgur is a very clever innovator and the pictures show how he implemented the next three features.
Click for detail The spare tire is reversed on the bracket so there is a space for the hose reel. When the hubcap is removed, the reel slides out on a shaft and the hose is easily deployed. Chuck often camps in the forest and needed a long hose for water.
Click for detail The reel bracket attaches to the spare tire support.

Click for detail This storage is designed for the artificial-grass mat. The picture does not show it well but this space is just in front of the door between the frame and the side of the coach.
Click for detail The aluminum door drops down to open a space large enough to carry a grass mat for use in front of the coach door. The mat looked to be about 10 feet by 10 feet. The door is held up with GMC twist connectors.

Click for detail Two jacks in the front and one jack on each side of the GMC are for boondocking. With these jacks he can level the coach anywhere and take the load off the air bags. The jacks are controlled from inside the coach. They are strong enough the lift up the front of the GMC

Click for detail This  picture shows the damage a blowout will do the flairs and side of the coach. Note the flares that are becoming very popular.

Click for detail Two of these units were at the Las Vegas convention.. Note that the ladder had to be shortened and the bumper had to be extended away from the coach.

  Bumper coversand these storage units are manufactured by:Frank Jenkins

Click for detail I have seen these under both seats

Click for detail The picture shows insulating ceramic paper attached to the under side of the motor cover. The claim is that the paper will stop the heat entering the coach. The paper will also reduce road noise. This product is advertised in Motorhome Marketplace. The paper is applied inside the entire engine area.

Click for Detail This electric step swings from the front of the coach to the extended position.  The step is wired so that when the ignition is turned on, the step retracts if the door is closed.  When the coach is parked a switch inside selects the automatic mode where the step opens and closes with the door or the extended mode where the step stays out until the engine is started.   The motor is electric and appears to be a wiper mechanism.  I do not believe this is the Rose unit.

  Here is a pictorial of the step