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Bob Many of us have the same electrical box in the same place. It is in the hallway outside the bathroom so that an electric razor, hair dryer, etc can be used in the bathroom without having an outlet in the bathroom which could have a problem with running water from the shower. Probably all...

Hi Fay It probably does NOT need a ground wire. Use a test light. Attach one lead to the carb and the other lead to the battery positive terminal. If it lights then it is finding a ground through the carb. Our carbs are metal and the bolts holding the carb to the manifold should ground it to the...

I think examination would show that the welds failed due to corrosion. Emery Stora > > Just like the welds cracked with time. :-) > > Regards, > Rob M. > The Pedantic Mechanic > Sydney, Australia > AUS '75 Avion - The Blue Streak TZE365V100428 > USA '75 Avion - Double Trouble TZE365V100426...

Several years back I replaced my single original Duotherm air conditioner with a 15,000 btu one. It was the high efficiency one and draws about 12 amps versus the 15 amps of the old 13,500 BYU. The old one was noisy and didn’t circulate the air as well as the new one. My 77 is well insulated as...

A couple of tacks with a welder will not cause warpage of the brake drum and will hold much better than JB Weld. The drums are thick and tack welding is no going to produce much heat to te drums. It not like you are going to penetrate much into the drum to cause a lot of heat. I did this 20...

The black pipe is called ABS. It uses a different solvent than the PVC to glue pieces together. My local Home Depot carries it and even sells shirt pieces such as 2 foot which is handy fo RV work. The normal size they sell is 10 foot. Emery Stora 77 Kingsley Frederick, CO > > The black...

If you leave the valve open on your 3” hose you run the risk of the liquid running off but the solids piling up in the tank and drying in a pile and then they don’t dissolve and drain out. I posted once that some have dumped in a couple of bags of ice cubes and drove on a bumpy road to break...

One of the problems with putting a large amount of sealant on a gasket and tightening it until it squeezes out is that it is also squeezing out on the inside of the case. Sometimes beads of it will break loose and get lodged into transmission parts where it shouldn’t be and that can cause a...

You have to pull it apart. Emery Stora > > So my black tank valve doesn't completely close. I can't get the retaining clips to snap over the handle. I'd say its less than 1/4" open, although > it doesn't seem to leak. I'm thinking there is some crud built-up in the end slot where the blade...

Sully, unfortunately that is not a ground cable but a live cable which can carry lots of 12 volt current from the rear battery to the front battery when the boost switch is on. Emery Stora 77 Kingsley Frederick, CO > > Johnny, > > Remember that where it disappears to is into the flammable...

I replaced my original 80 amp alternator with an Autolite 7157 100 amp alternator many years ago. I had no problems with the existing wiring but some have suggested replacing the wire from the alternator that goes to the center terminal of the isolator with a heavier gauge wire. Normally you...

No, you don’t have to join FMCA to join some GMC clubs. GMCMI will allow you to join but you cannot vote or attend its conventions because FMCA provides the liability insurance coverage for the conventions and won’t cover you unless you are a FMCA member. Emery Stora 77 Kingsley Frederick, CO...

You say that GM calls for 91 octane. You must have read that in a 1973-1978 manual. The method of setting octane today is quite different. They take the average of two methods. So, today’s 86 octane is equivalent to that eras 91 octane. You can burn 86-87 octane fuel in a 455 or 403 GMC engine...

What are you putting under the modules when you install them? Unless you put the proper heat conductive grease under it they will quickly fail. Don’t just use dielectric grease which many auto parts stores will tell you it what to use (including an ignorant clerk at a local NAPA store). New...

I see that no one has mentioned the old bag of ice trick. If feces and toilet paper are mounded on the bottom of the tank and perhaps dried and hard, dump in a bag or two of ice cubes and drive the GMC. A bumpy road might help. The problem sometimes occurs when people are parked and leave...

This happened to me about 2000 or 2001 when I was on a trip to San Jose Calif to visit my daughter. I was driving in the evening when I started to smell smoke from the dash in front of the passenger seat. My turn signals and brake lights also failed to work. I was close to my daughter’s...

It sounds like you are under the misconception that the Onan runs hotter when it is pushed in. Actually the way the fan is designed when the Onan is pushed in air will be drawn around and over the Onan so it will actually run cooler when it is pushed in and the door closed. Emery Stora 77...

> > Why isn’t Grandview on the “Blacklist”. > Probably because the Black List is a list of owners who have ofered to assist other GMCers in trouble at no charge. Grandview Motorhomes is a “dealer” or service location that gets paid for their service when they work on your motorhome. Emery...

Jim - some additional information. Erv Troyer posted this about 10 years ago but its still a good place to buy a replacement unit: ————————————————————————— Occasionally questions crop up here about rebuilt cooling units (C/U) for our refrigerators, and the name of National RV Refrigeration...

First of all there is no compressor in your Norcold 3 way fridge. I don’t know what you are hearing but its not a compressor. It has gas or a 12 volt DC heater or a 120 volt AC heater. You have now learned that you cannot operate it parked off level on a hill. The refrigerator operates by...