99 GMC Yukon Rear A/C problems

Went to the dealer the other day to find out why my A/C wasn't
working...estimate is for $1700 (Canadian)+ taxes.

ouch.

Yukon was stored winters, but the lines are leaking and the fittings
going into the rear evap are leaking as well.

I got prices from the local GM dealer, parts are for 4 lines (the
replacement ones split in the middle) and the rear evap.

Is this something a backyard mechanic could do over a weekend and then
take the system in go get charged again?

Tony
[email protected]

I just replaced the Compressor and accumulator on my 99 Trail Blazer, I
didn't have any problems. I brought it into the local shop afterwards for a
leak test and refill. I say go for it.





<[email protected]> wrote in message
news:[email protected]...
> Went to the dealer the other day to find out why my A/C wasn't
> working...estimate is for $1700 (Canadian)+ taxes.
>
> ouch.
>
> Yukon was stored winters, but the lines are leaking and the fittings
> going into the rear evap are leaking as well.
>
> I got prices from the local GM dealer, parts are for 4 lines (the
> replacement ones split in the middle) and the rear evap.
>
> Is this something a backyard mechanic could do over a weekend and then
> take the system in go get charged again?
>
> Tony
> [email protected]
>

"wedgeindy" wrote:
>Went to the dealer the other day to find out why my A/C wasn’t
>working...estimate is for 00 (Canadian)+ taxes.
>
>ouch.
>
>Yukon was stored winters, but the lines are leaking and the fittings
>going into the rear evap are leaking as well.
>
>I got prices from the local GM dealer, parts are for 4 lines (the
>replacement ones split in the middle) and the rear evap.
>
>Is this something a backyard mechanic could do over a weekend and
then
>take the system in go get charged again?
>
>Tony
>[email protected]

No problem, you could even rent a pump and gauges to pump it down and
charge it yourself too. Make sure you replace the reciever drier while
you have it apart and add the correct amount of oil to it and for rear
evaporator. I would also suggest you replace orifice valves while you
have it apart. They are less than 10 buck and easy to change when
system is not charged and they have screens in them that sometime plug
up with metal flakes and reduce the orifices effectiveness.

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Sorry to be a total rookie at A/C....

Is the receiver/drier also called an accumulator? The dealer listed
that I needed one of those too and they're $500 Canadian.

Where are the orifice valves? How may are there?

Where do I get the oil? How do I know how much oil to add to the
accumulator?

Tony
[email protected]

1) The receiver/drier is called an accumulator on some cars.

2) Not sure where to find your orifice valves

3) You can get the A/C oil at almost any Autoparts store and you may be able
to ask them how much oil to add 1-4 oz, the more parts your replace the more
oil you will need to add. Otherwise the person topping up the A/C could
possible add the oil for you it can be expensive to buy in small quantities.





If you have a good
<[email protected]> wrote in message
news:[email protected]...
> Went to the dealer the other day to find out why my A/C wasn't
> working...estimate is for $1700 (Canadian)+ taxes.
>
> ouch.
>
> Yukon was stored winters, but the lines are leaking and the fittings
> going into the rear evap are leaking as well.
>
> I got prices from the local GM dealer, parts are for 4 lines (the
> replacement ones split in the middle) and the rear evap.
>
> Is this something a backyard mechanic could do over a weekend and then
> take the system in go get charged again?
>
> Tony
> [email protected]
>

"wedgeindy" wrote:
>Sorry to be a total rookie at A/C....
>
>Is the receiver/drier also called an accumulator? The dealer listed
>that I needed one of those too and they’re 0 Canadian.
>
>Where are the orifice valves? How may are there?
>
>Where do I get the oil? How do I know how much oil to add to the
>accumulator?
>
>Tony
>[email protected]

You need to good to a discount parts store for these parts and not
dealer if you can as here in the states "driers" are 40 to 60 bucks
at them.

The Orifice valve is located right inside the fitting this is the
input to the evaporator ans ir held in place when feed line is
connected to it and is east ro change. The rear unit may have a
Orifice in same place or a thermally controlled unit that generally
does not need replacing unless it is bad.

As far as oil amount when you buy after market parts they usually come
with instructions as to the amount to add for each replaced component.

--
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