the subject is an FAQ within the Allante section
here and the subject at hand (trani) is not N* specific
but applies to the 4100,4500 and 4600 (N*) drive trains. it may also apply to other year models,
someone else can research that.
the GM / Cadillac Drive Train Engineer in question posted the following in approx 5 websites.
before we hit the wall in controversy, let us all keep in mind that this quote is in relation to
the '87 to '93 Allantes, and the requirements for newer cars may be different. i dont know. the car subject
in this thread is a 2001 N*, built 8 years after the last Allante with a totally different design trani?
also, keep in mind that some of the transmissions for these Allantes have obsolete parts that can render
the car a total loss since the only parts source may be another Allante. the cost of taking a risk with
an Allante may be greater than with other Cadillac models. it may ....
here is a partial ...
by name witheld by request
It is entirely adequate to drain the trans fluid from the bottom pan and refill with fresh Dex3. Replace the filter when the bottom pan is off for the fluid drain. Forget about the idea of a flush. You don't need junk flushed into your transmission from the flushing equipment that is misplumbed/misrouted/not cleaned/full of old oil/etc.
for those that dont know, part of his job is inspection of Cadillac drive train warranty returns -
he gets to see what comes back and determines why it came back. i wonder, do any Cadillac
transmissions get flushed during the warranty? is that part of the 60,000 service for newer cars?
i really dont know, i'm asking!
in several postings he made direct reference to the lack of maint of the equip used by
many shops and the risk of contaminating perfectly good transmissions.
is that under control
again, to avoid confussion - we are not talking about the same thing,
there are good flushings and there are bad flushings,
there are older cars, there are newer cars,
there are old requirements, there are new requirements..
- IF you are 100% sure the equip is CLEAN & free of contamination
as required by the equip makers, the risk is small or none.
- IF you have no idea about the equip status, DONT DO IT or go where
equip condition is w/o a doubt, clean!
My question is, how does one know if a buddget trani shop or a dealer has a clean machine?
the last question is "when is a flush needed?"