Can I Buy GM parts online, instead of going to dealer?

#41

"GaWd" <samroza@hotmail*NOSPAM*.com> wrote

Quote:

"Gary Glaenzer" <nobulltrans (AT) mchsi (DOT) com> wrote in message
news:%ktKa.21173$Ab2.43500 (AT) sccrnsc01 (DOT) ..

"DJ Hatt" <djhatt (AT) lycosSPAM (DOT) com> wrote in message
news:3efa5f48_1 (AT) corp (DOT) newsgroups.com...

"Gary Glaenzer" <nobulltrans (AT) mchsi (DOT) com> wrote in message
news:uUqKa.20289$Ab2.40896 (AT) sccrnsc01 (DOT) ..

"DJ Hatt" <djhatt (AT) lycosSPAM (DOT) com> wrote in message
news:3efa29e7_1 (AT) corp (DOT) newsgroups.com...

I'd be interested to know where I could get some quick
understanding,
[a laymans understanding], of the role electricity plays as
far as
resistence
and these low voltages go, and why a butt connector creates
too
much
resistence,
how that may affect the voltage capacity and why.

a properly installed crimp-typer (read : Crimped with the
proper
tool)
butt-connector or end-connector (spade lug, ring lug) will
have
negligible
resistance

it's a non-issue, else the airliners wouldn't be full of them

What is "resistence" defined as for our purposes here Gary?

Since there is very little current flowing in the TPS circuit,
resistance
could actually be up to several tens of ohms without being a
problem

My GM
repair manual says that
the TPS should be adjusted to read .45 volts + or - .06 volts.

OK, that sounds reasonable, I've always used 0.50 as a standard,
but
whatever the booksays............

Thinking in
machinist's terms, thats a pretty relatively small unit of
measurement. I'm just using a laymans reasoning here but to my
way of
thinking
then, it wouldn't take much resistence to impede that flow, [of
electricity].?

as I said above, the amount of current flowing in that circuit is
very,
very
small.....the ECM is supplying 5V to the 'top' of the TPS,
'bottom' is
ground potential, and the 'wiper' or variable terminal feeds a
voltage
back
to the ECM

since most sensor inputs show a very high (25,000 ohms or greater)
'input
impedance', any resistance up to 100 or so ohms anywhere in the
TPS feed
or
return circuit would make very little difference

resistance in the GROUND side could conceivably raise the minimum
past
acceptable levels, however.

I do admit however, my logic
may not apply to electronics, [voltages, wire sizes, insulation
thicknesses, resistence, etc.], and how they work together. So
I'd
like an understanding of that if someone can give
it without too much effort.

without trying to sound 'preachy', I'd suggest you find a good
text on
basic
DC circuits and go thru it...........you need to bone up on the
basics of
voltage, current, and resistance, which will make understanding
all your
above questions pretty simple.

try the public library, 'The Radio Amateur's Handbook', the late
50's to
early 70's editions had a really good chapter on 'Basic Electrical
Circuits'
(the armed forces used this part of the Handbook as basic training
material
for all radio operators and repairmen during WW-2)

Hatt

DJ, I agree with Gary. I think you need to do a quick read on "Ohm's
law".
It is the basis for the relationship between Voltage, Resistance and
Amperage(and much more, really).

Sam

P.S.- Just crimp the sucker :-]

I agree myself. Once a guy finds the graciousness to get started, as
you
guys have provided, and with the sure circumstance of time and money
being against
me, I realize I should have studied this when I had the chance, in
high school.
Our teacher then was only 21 years old, and he couldn't very well
control an
all boy class only 3-4 years younger than he, so he just went with the
flow instead
of flunking us all.

I have already started to re-do all connections again. Soldering.
Its a pain in the ass
and I hardly have time to sleep, much less eat, before I have to be
back at work for
the man in the morning, but I've already spent almost 3K with numerous
mechanics
on a truck I paid 28 hundred for and it still ain't right. When I
replaced the injectors
myself, it cured a lot of problem, and especially the black smoke that
bothered me
so much. I'm beginning to figure out that what is wrong with my truck
is a combination
of maybe dozens of problems. Possibley compounded one little thing
over another.
I can't stand a poorly running machine. I'm not going to buy a
crimper just yet, I used
the end of a higher end stripper, it looked like it was made for it,
but I had to stand on
the SOB to crimp that connector. While I realized perfectionism can
sometimes be a
curse, and have had to take an engineer or two, down, on my floor, to
show them what
would not work in actual practice, I'm seeing the significance of both
sides of the arguement.
I'll surely let you know what soldering these has done for me and my
truck. Just one more
thing. I can tell you if I open the tape around the splices where
those pigtails for those injector
leads that go to the injectors is, and find them loose, or improperly
crimped, or not closed
from corrosion or moisture, there is going to be one more sore
"mechanic," in these parts,
cause I'll kick his hillbilly ass all the way back to Missouri.

Hatt

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#42

"Joshua Phillips" <phillijp (AT) nospam (DOT) cinci.rr.com> wrote

Quote:

Kevin wrote:
Hmmmm, the same shop that put the wrong speaker in my Yukon when
it
died.....

I can't expound on the sales or service end of the dealership but I
have
to say I was impressed with the parts guys. Holman GMC is where I've
bought both of my trucks and I couldn't be happier with the service
dept
or the sales dept. Too bad they are an hour (each way) for us west
siders. I can tell you that I went to Sweeney GMC in Queensgate for
my
sticking throttle body and was not at all happy with their work.

Joshua

Sticking throttle body?

Hatt

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#43

DJ Hatt wrote:

Quote:

Sticking throttle body?

From the same people who invented plastic that rusts, trucks that
automatically shift into 4wd and a host of other cutting edge "must
haves" it's the sticking throttle body or gas pedal (you choose the
terminology). Essentially every 10-15k the throttle body needs to be
cleaned out because the tolerances between the throttle plate and
throttle body are too damn tight and the buildup of carbon in this area
causes the throttle plate to bind. Some people here find this
acceptable, I do not. If you go to Holman they swap out the entire unit
with an improved design that also begins to bind after the prescribed
amount of time. If you go to Sweeney they clean it out and then tell you
you should be grateful they (Sweeney) aren't charging you for this. I
was too tired to engage this "person" in a conversation so I praised the
good Lord right then and there and wet about my way. Also Sweeney
doesn't tighten the hose clamp where the tube mounts the throttle body.
Boy I sure was lucky that day woohoo!

Joshua

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Can I Buy GM parts online, instead of going to dealer?

4x4 Chevy/GMC Trucks 4x4 Chevy/GMC Trucks Discussions (alt.autos.4x4.chevy-trucks)

Re: Can I Buy GM parts online, instead of going to dealer? - 06-26-2003 , 06:50 PM

Re: Can I Buy GM parts online, instead of going to dealer? - 06-27-2003 , 09:02 PM

Re: Can I Buy GM parts online, instead of going to dealer? - 06-27-2003 , 11:55 PM