maiden voyage from hell

dick kennedy

New member
Jun 1, 1998
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Bob,

A few weeks ago going across Iowa with outside temp in the 90's, both
roof
AC's running and with a fan to circulate the air the best I could do was
about 98 degrees in the driver's seat. And this was with the
thermometer
placed out of direct sun light. The temperature in the rear was somewhat
cooler but still not as cool as I would like although I didn't actually
measure it. This was the good part. When the generator died the temp
would
only come down to 114 degrees when we were moving and we were 1000 miles
from home.

So I too am looking for answers to the temperature problem. I'm
wondering
if those roof AC's could have lost some coolant and lose effeciency at
high
ambient temperatures. I don't have much experience in this area. Do we
have any AC experts here?

My wife too is convinced that the GMC is a jinxed. Last year we bought
the
coach while passing through texas on vacation and left our Tioga parked
there thinking that all the GMC needed was new tires on the rear. After
a
couple hours of driving I decided that the handling was awful and
stopped at
a local garage. After several stops we had a diagnosis of bad ball
joints.
It took 2 days to get 4 tires and to figure out that the ball joints
weren't
available. There happened to have a copy GMCMM in the GMC so after much
phone work we located ball joints in Colorado so decided to divert our
vacation to there where we spent another three days in a repair shop.
Two
thousand dollars later the handling was only slightly improved. On this
trip I ran out of fuel when I switched tanks going over the pass from
New
Mexico into Colorado and a couple of other times the machine died
without
reason. This was later diagnosed as a marginal fuel pump. Then as we
started home the rectifier in the generator failed so we had no AC for a
thousand miles. Then a little later at one of our gas stops the
ignition
switch failed and we had to call a locksmith to repair it.

Later last year we were headed for Michigan when the engine started
reving
and it just wouldn't go anymore. The transmission had dumped all of it's
fluid due to some bolts vibrating loose. When I had figured out what
had
happened and got everything tightened up and refilled the starter
failed as
I was getting ready to move again. This was on a saturday and I couldn't
locate another starter until Monday.

Then on New Years day we were in South Miami coming back from the Keys
and
the starter failed again. We were in one of these neighborhoods with
chain
link fence and guard dogs but were lucky to find a store that was open
and
had the right starter in stock.

This year I replaced the dash AC compressor then blew a hose the day
after I
had it charged. While going to get the AC charged the gasket under the
heat
riser blew out. The blowby scorched the gasket under the carburetor so I
had
to replace that also. Then when we left on vacation I found that the
gasket
they had sold me wasn't the high temp type. I had to repair it again
when it
burned through about 40 miles from home. Then about the time we got into
Iowa the gasket under the EGR valve blew out necessitating more roadside
repairs. Later that week the exhaust pipe on the generator developed a
hole.
I stopped at a Napa store to get a muffler bandage. When I got that in
place
and the generator up and running again as I pushed the generator back
into
it's compartment it's cast iron starter bracket broke and the starter
fell
off. This shorted out the coach batteries burning the terminal off of
one of
them and killing the generator. This also left the engine alternator
shorted
until I disconnected the wire. Once again I had no AC.

This isn't even counting minor things like the air compressor not
working
and the plastic end on one of the air bags exploding. The list is
endless.

I keep telling the wife that nothing else can happen because everything
already has but then something else dies. I owned a '79 from '83 to
'93
without ever touching anything more involved than an oil change. Then
we
had a Tioga with no mechanical problems and swapped it for the GMC and
have
had catastrophic failures on each of four consecutive trips. These
other
machines had plenty of cosmetic problems but on the GMC I haven't even
looked at anything which is only cosmetic.

I think I'll hold off selling and try one more trip.....

Surely nothing else can happen.

Dick
 
> Date: Tue, 11 Aug 1998 22:01:41 -0400
> To: gmcmotorhome
> From: Dick Kennedy
> Subject: Re: GMC: maiden voyage from hell
> Reply-to: gmcmotorhome

The following seems normal, is there a problem.
Lost any wheels...yet ??
Only kidding................you seem to have had all the bad luck up
front...smooth sailing from here, we hope :)

> Bob,
>
> A few weeks ago going across Iowa with outside temp in the 90's, both
> roof
> AC's running and with a fan to circulate the air the best I could do was
> about 98 degrees in the driver's seat. And this was with the
> thermometer
> placed out of direct sun light. The temperature in the rear was somewhat
> cooler but still not as cool as I would like although I didn't actually
> measure it. This was the good part. When the generator died the temp
> would
> only come down to 114 degrees when we were moving and we were 1000 miles
> from home.
>
> So I too am looking for answers to the temperature problem. I'm
> wondering
> if those roof AC's could have lost some coolant and lose effeciency at
> high
> ambient temperatures. I don't have much experience in this area. Do we
> have any AC experts here?
>
> My wife too is convinced that the GMC is a jinxed. Last year we bought
> the
> coach while passing through texas on vacation and left our Tioga parked
> there thinking that all the GMC needed was new tires on the rear. After
> a
> couple hours of driving I decided that the handling was awful and
> stopped at
> a local garage. After several stops we had a diagnosis of bad ball
> joints.
> It took 2 days to get 4 tires and to figure out that the ball joints
> weren't
> available. There happened to have a copy GMCMM in the GMC so after much
> phone work we located ball joints in Colorado so decided to divert our
> vacation to there where we spent another three days in a repair shop.
> Two
> thousand dollars later the handling was only slightly improved. On this
> trip I ran out of fuel when I switched tanks going over the pass from
> New
> Mexico into Colorado and a couple of other times the machine died
> without
> reason. This was later diagnosed as a marginal fuel pump. Then as we
> started home the rectifier in the generator failed so we had no AC for a
> thousand miles. Then a little later at one of our gas stops the
> ignition
> switch failed and we had to call a locksmith to repair it.
>
> Later last year we were headed for Michigan when the engine started
> reving
> and it just wouldn't go anymore. The transmission had dumped all of it's
> fluid due to some bolts vibrating loose. When I had figured out what
> had
> happened and got everything tightened up and refilled the starter
> failed as
> I was getting ready to move again. This was on a saturday and I couldn't
> locate another starter until Monday.
>
> Then on New Years day we were in South Miami coming back from the Keys
> and
> the starter failed again. We were in one of these neighborhoods with
> chain
> link fence and guard dogs but were lucky to find a store that was open
> and
> had the right starter in stock.
>
> This year I replaced the dash AC compressor then blew a hose the day
> after I
> had it charged. While going to get the AC charged the gasket under the
> heat
> riser blew out. The blowby scorched the gasket under the carburetor so I
> had
> to replace that also. Then when we left on vacation I found that the
> gasket
> they had sold me wasn't the high temp type. I had to repair it again
> when it
> burned through about 40 miles from home. Then about the time we got into
> Iowa the gasket under the EGR valve blew out necessitating more roadside
> repairs. Later that week the exhaust pipe on the generator developed a
> hole.
> I stopped at a Napa store to get a muffler bandage. When I got that in
> place
> and the generator up and running again as I pushed the generator back
> into
> it's compartment it's cast iron starter bracket broke and the starter
> fell
> off. This shorted out the coach batteries burning the terminal off of
> one of
> them and killing the generator. This also left the engine alternator
> shorted
> until I disconnected the wire. Once again I had no AC.
>
> This isn't even counting minor things like the air compressor not
> working
> and the plastic end on one of the air bags exploding. The list is
> endless.
>
> I keep telling the wife that nothing else can happen because everything
> already has but then something else dies. I owned a '79 from '83 to
> '93
> without ever touching anything more involved than an oil change. Then
> we
> had a Tioga with no mechanical problems and swapped it for the GMC and
> have
> had catastrophic failures on each of four consecutive trips. These
> other
> machines had plenty of cosmetic problems but on the GMC I haven't even
> looked at anything which is only cosmetic.
>
> I think I'll hold off selling and try one more trip.....
>
> Surely nothing else can happen.
>
> Dick
>
>
>
 
Dick:

Wait .. you haven't experienced the locust or boils yet. Then there's that
first born thing ...

At least your still smiling.

Larry Miglore
 
.............
>Follows the saddest tale I've heard since my girlfriend left me, I got good
>and drunk, and read the book of Job for my "Bible as Literature" class 30 ears
>ago!

Rick,

I am the oldest son in a line that goes back as far as anybody in the family
has traced it. Maybe I've been selected!!!
>
> What can I say? Bright yellow citrus fruits come from anywhere, even GMC!
>Some suggestions:
>
>1 Join FMCA and GMC Motorhomes International. (A local GMC club would be
>good too.) Spend the bucks to get GMCMI's back issue newsletters back to day
>one, then read 'em.
>For example, the plastic air bag cones are an old and well-known weakness
>written up in various newsletters over the years.

I've been meaning to join these but haven't gotten around to it. I've been
so busy with crisis management that round tuits are in short supply here.
Looking at the long list of things that have gone wrong nothing is GMC
specific they could have happened on any old machine. I've come to the
conclusion that a lot of things on the GMC are under designed or poorly
designed. The front end and drive train is marginal and the way those rear
bogies are done is insane but none of this is the source of my problems. It
sometimees feels like the suspension has too much give to it. I wouldn't
even think of opening the four barrel to climb a mountain this machine isn't
designed to survive that kind of use. These complaints apply to nearly all
of the low end RV's but the commercial grade machines are big bucks so I'll
live with it. The one problem that I can't find a solution for is the front
wheel drive. I pull a boat and Launching it is a marginal operation even
on a good ramp. It puts me near maximum on both traction and torque, not a
good feeling at all. On the other hand the height is only 9'4" which allows
me to go places other people can't go. I like to wonder back roads so it's
not at all uncommon for me to get in a place where I have to back out. A
more sturdy machine would be taller and heavier. It's a tradeoff. The
perfect machine would be a diesel pusher about the size of the GMC but I
haven't seen one and I'm sure I wouldn't like the price.

The air bag blew when I was putting it on Jacks. The pieces only missed my
head by a few inches. These are dangerous so everyone should put aluminum
cones on their list of things to do.
>
>2 You need to find a competent, dependable mechanic if you cannot fix it
>yourself. For example, the blown A/C hose immediately after recharging the
>system is quite possibly due to overcharging. It's hard to see how you could
>spend $2000 on the suspension unless you got all new Bilsteins (a good though
>expensive idea) along with all new ball joints and a few other goodies.

I am a competent, dependable mechanic by necessity because I've never found
another one that will work at a price I can afford. ( Every once in awhile I
have to fire myself for doing something dumb) Like most people I have a
strong aversion to dirt and grease but it's necessary to do what needs done.
I like the sense of accomplishment when I get done. I also have a network
of buddies which can usually get me started in the right direction. For
example the guy who did my AC does cryogenics commercially but doesn't
normally do automotive AC.
The AC hose had been rubbing on the pulley. I tied it up out of harms way
and since it was holding pressure assumed it was ok. An expensive mistake!
The front end got new ball joints and hubs and knuckles. It had the Wallace
bearings in it but they were burned and seized in the hubs. I was probably
close to disaster on the bearings. In retrospect I should have delivered
the GMC home last year and then went on vacation in my Tioga. I still can't
believe that I swapped a perfectly good machine for this mechanical nightmare.
>
>3 Heat gain is a problem on all motorhomes, but the GMC has more and bigger
>windows than any other. Super dark window tint on all the side and maybe the
>rear windows is a start. Pick up a pair of wind-wings from Mo or Jana,
>they'll keep the interior below 100F if you have to go without AC. Be sure
>your dash heater shuts of COMPLETELY when in "recirc" mode (feel the hoses at
>the heater, should be cool - lukewarm, not hot). If it's not, install a
>shutoff valve.

The roof AC's don't seem to me like they're as cool as desired and they seem
to be even worse when it gets very hot. We charged the dash AC with
Autofrost. At highway speeds I can only maintain a duct temperature in the
fifties. It technically meets specs but it's marginal compared to other
vehicles I've had. Particularly when you consider the anemic air flow in
this system. I'm wondering if I may have a bad expansion valve or if the
Autofrost might not be a good substitute in this application. On this
machine the drier canister runs hot while on other machines from this era
the canister runs cold. Something isn't right in all of this but I'm still
waiting for the answer to come across the group. Then the heat gain is
another whole issue that I haven't even begun to look into.

The heater shutoff valve still works so I rerouted some vacuum lines so it
will stay closed all summer.

Meanwhile I'm going out and put all the AC back together then taking my boy
fishing. First grade starts on Monday so this is our last chance for a long
weekend.

Enjoy

Dick

>
>Good luck, you've earned it!
>
>Rick Staples
>
>
 
Dick.........Try hanging garlic around your neck or sacrificing the
neighbor's goat!.........Jim Davis
- -----Original Message-----
From: Larry Miglore
To: gmcmotorhome
Date: Wednesday, August 12, 1998 5:21 AM
Subject: RE: GMC: maiden voyage from hell

>Dick:
>
>Wait .. you haven't experienced the locust or boils yet. Then there's that
>first born thing ...
>
>At least your still smiling.
>
>
>Larry Miglore
>
>