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Question:

transmission flush and filter?

and transmission fluid what is the cost 1999 chevy silverado 1500 four wheel drive

Answer:

Contrary to the opinions listed here, transmissions can be flushed without any problems. We had a Caravan at work with shifting problems . They company was going to replace he transmission. I talked them into flush. FOUR YEARS later the transmission still works perfectly. Flushing removes all the old fluid and contaminants which otherwise would ruin the new fluid. As long as a reputable garage does the work, you should have no problem. Of course, it will not fix mechanical problems not associated with fluid.
in a nutshell. Don't do it. if the tranny fluid has never been changed. 1. the dealer WILL NOT give you any warranty on a tranny flush. you can ask my neighbor about that. He now is paying for a new Toyota SUV where as before the tranny flush He had a paid for Honda mini van. 2. once the tranny fluid gets old as in never changed the oil has degraded to the point it no longer conditions the rubber parts from inside the transmission. now, laws of physics dictated that the tranny will wear out little by little, this means, that sediment will deposit at every place there is tear and wear. once you remove the old thicker fluid and add new fresh thinner fluid it will clean away all that sediment at the seals, clutches are you getting where I'm going with this? pressure will be lost(leak through those worn out places where sediment was deposited and ironically sealing) and tranny begins to slip gears. the tranny will not work well and if it does it will for a short period of time, who knows it can last 1 or 10 years, no body knows but statistics shows that it won't last long. gl
Transmission flushes are very risky procedures that should never be performed unless the service manual calls for it or unless the transmission was contaminated by coolant or other contaminants. Do only what the service schedule in the owner's manual calls for. There are lots of shops that will do it because it is a very profitable procedure, but I do not know of any car or truck that calls for transmission flushes. As a post in the source says, I only know a few people who have had the transmission flush, and every one of them said it never shifted right again. I've never heard of any problem from draining by pan removal. I agree completely. EDIT - for your GM truck, GM specifically warns against it. From their TSB #04-06-01-029G: .many of your service departments merchandise supplemental services and fluids to customers indicating that these “flushes” have a positive effect on durability of the component part. It should be noted that analyses of returned parts that have been exposed to these aftermarket “flushes” show indications of potential damaged and shortened durability. And: The use of external transmission fluid exchange or flush machines is not recommended for the automatic or manual transmission. Use of external machines to replace the fluid may affect the operation and durability of the transmission. Transmission fluid should only be replaced by draining and refilling following procedures in Service Information. See the second source.

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