Alex Sirum GMC Motorhomes, Inc.
1800 Hwy 70 East
Okeechobee, FL 34972
Phone (863)763-1121 
Fax (863)763-1124
sirum@gmcmh.com   www.gmcmh.com
 
   
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  Feature Items          

In this section we list some of the more popular items  we sell and/or Install.

         

New Replacement Letters

These GMC front and rear replacement letters are the exact same size and shape as the originals, but they are cut from .020" thick high polished stainless steel for a more modern look.  $45.00 per set. For More Info

    















 
  Now in stock- Front Hub Extenders  Kit  $395.00
These are solid aluminum
 
One of the common problems with the GMC is the front end stability. The extenders go on the front hubs and will bring the front tires out to almost the same width as the back wheels. This simple installations is one the most cost effective upgrades you can do for your GMC. The wider stance of the front  improves stability and reduces the tendency to hunt in road ruts.
 

 
             
  Now in stock Alcoa Aluminum wheel center caps.
These are the solid aluminum center hub caps with the letters GMC engraved.
These are still selling for
$19.95 each, price may go up soon. 
 
  New Item- Bathroom sink faucet with shower control       $35.00 Each

These are like the original with the shower connected below the counter. Chromed plastic easy to install.

     

 
 

Fuel Vapor Separator  this is the small plastic device that is in the left rear wheel opening and allows the air to go in and out of the fuel tanks as you fill the tanks. Often it is either leaking of plugged up. Replacing this will most likely allow you to fill faster and not have a leak back by the rear wheel.

In Stock    $89.00 each

 
We also have solid Stainless Steel bolts (includes: bolt nut washer and lock washer) to finish off the complete new look. $1.00 each. (8 bolts per bumper half.)
 

             
  Now in stock: Complete GMC  shop manual, and  77-78 Supplement manual,  Onan "power drawer " generator  manuals and  owner manuals. plus all tech bulletins and complete wiring schematics  all on a 3 CD set. (PDF) only $35.00 a set          

New rear brake drums
 
we still have plenty of rear brake drum and don't foresee any problem with re-supply for many years to come.  Also due to increased popularity of rear disc brakes, we often have several very good used rear drums at a substantial savings.
 

 

Now in stock: Complete GMC shop manual (over 650 pages), and  77-78 Supplement manual,  call for prices and shipping info. We also have Onan "power drawer " generator  manuals and reprints of original owner manuals. (reprints)
 

             


 New shift cables, throttle cable, and emergency brake replacement cables are now available!  Call For Prices.
 

             

Alcoa Aluminum Wheels:

One of our best selling items has been aluminum wheels.

Most people say that changing over to aluminum wheels has been the  single most effective improvement they have made to the ride and   performance of their  GMC.   This is mostly due to the improved feel and balance of the Alcoa wheels.  The original steel wheels are now from 28 to 33 years old!  Most of them are bent, out of round and just not easy to balance. The Aluminum wheel are very easy to balance and true the wheels. This give you the smoothest ride you may have ever had in your GMC.  Just ask an owner with Alcoa wheels.  

Our classic wheels are $289.00 Each

A Complete set of 6 wheels and all the mounting hardware plus GMC center caps for $Call  plus shipping or installation

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New Leather Captain's Chairs
Replace your old seats with new style custom leather reclining captain's chairs.  These seats will be a definite plus in your GMC.
We often have these colors in stock: Lt. Gray, Gray, Taupe. Seats are genuine leather and can be custom ordered in one of 20 custom colors.  Prices starting at
$550.00 each. For available options and colors go to Captain's Chair
 

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New Roof top AC units

We also have in stock several new roof air-conditioners.  We sell Carrier, Duo-Therm and Coleman brands. Offered in low profile and standard heights, with or without heat pump.  Also available with the climate control thermostat center.

These new units all have a much quieter compressor and will greatly increase your level of camping comfort. 
 

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In stock super Heavy Duty  front sway bars!
Upgrading your front sway bar is very easy and may have a substantial effect on the handling and stability of your GMC.   The original sway bar is about 1" in diameter. These super heavy duty bars are a full 1 -1/4" thick.  They also come with new mounts and links.
Complete Kit   
$249.00
 

             

Also in stock Rear Sway Bar kits!
Several GMC owners feel that the rear suspension of the motor home has too much sway and swag. Another fact is that the rear wheel width is greater than the front wheels, this will also contribute to difficult handling especially on narrow roads with truck ruts! A rear sway bar kit will greatly improve these problems.

Complete Kit    $438.00   All 4 rear wheels, plus labor or shipping

  (or $219.00 each rear axel kit)

 

General Information: Sirum@gmcmh.com
Sales: Ask for Jeff or Norma

Alex Sirum GMC Motorhomes, Inc.
1800 Hwy 70 East
Okeechobee, FL 34972
Phone (863)763-1121  Fax (863)763-1124