Hi. Just picked up a very nice 2005 Dodge Grand Caravan SXT with 108K miles.

To the best of my knowledge, the only maintenance performed to date has been routine engine oil and filter changes - the engine seems to run very well.

I'm wondering if it would be a good idea to change the transmission fluid now? We obtained a quote from a trusted garage for $190 to do this - does that sound right for the fluid and labor involved? Although I like to do my own wrenching, I've never worked on an auto tranny before - is it really as simple as dropping the pan, draining the fluid, replacing the filter and then resealing the pan and filling? If so, I will probably do it myself.

I do see some people mentioning a "flush" - which I believe is some sort of pressurized introduction of fresh fluid to force out the old. It seems to have many detractors and would be something I can't DIY, so I'm inclined to avoid this.

Also - what would recommend as the best source for a service/repair manual? Is the Haynes for this vehicle any good or is there a better option with diagrams etc...?

Many thanks!

 

Never done a tranny fluid/filter change on a 4th gen van but it can't be much different then others. Yes, it's that simple. Easily doable. To avoid any possible fluid spill I like to pump the fluid out the dipstick before knocking the pan loose. Some swear by using RTV sealant and others use a gasket. I believe Mopar even makes a multiple use gasket for a few extra bucks. The pros recommend no flushes on higher mileage vehicles. Yours is borderline. Use ATF+4 fluid and only ATF+4. As a reminder - only use ATF+4 fluid.

The factory manuals are best. Might find them cheaper on Ebay. Chilton/Haynes are fine for many jobs but can lack detail. For better wiring diagrams you can subscribe to Alldata.com. If you like free stuff (who doesn't) the EBSCO/ARRC data base available at home via your local library is packed with good info on just about any make and model out there.

 

Thanks! My main concern, not being familiar with auto trannys, was whether I could possibly do any harm by dropping the pan and changing the fluid - that does not seem to be the case.

I was surprised when I learned you had to drop the pan to drain the fluid - is there any reason they don't have a drain bung like on the engine's oil sump?

I think I will pick up the Haynes manual for the time being.

 

Why no plug? I would guess to encourage you to take it to the dealership to have it done. Dorman sells a pan with a plug for around $25.

 

Why do you say that?

 

Some will see there's no plug and realize the job just got the potential to be a real PITA so they take it to a dealership to avoid the headache. The potential PITA being dealing with a stuck pan, banging on it to get it to come loose and when it does the fluid goes all over the place. That's why I suck the fluid out the dipstick with a pump before I knock the pan loose.

 

Thanks - the pump idea sounds like a good one. Which type/model do you use?

 

I use one of those mechanical rotary pumps you put on a drill. Takes a bit to get it going though and I had to get additional tubing to fit the pump and the dip stick. Ideally I'd like a pump you can connect to the battery.