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Transmission Service

maje16

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maje16 Enthusiast

maje16

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Who does their own transmission servicing/maintenance? I used to do my own years ago but in recent years I've taken it to the dealer. Is there anything complicated in doing the 4L60 on my 99 Sierra, or is it just filter and fluid? I would rather do it myself as the rest of the fluids/oil changes on the truck are fairly straight forward. For those service techs that work at the dealerships and do them daily are there any special procedures that are used on 99 and newer trucks with the 4L60...(computer/electronic stuff)??

For the DIYer what has been the best filter kits to use and why? Is your standard NAPA kit ok? Or is there a better GM filter kit available thru parts dept. at the GM dealer? What type of dexron do you guys use, the dexron III or the newer dexron?

thearborbarber Enthusiast

thearborbarber

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I use a wix filter kit from amazon.com. They run about $20. Dont bother trying to use the drain plug because it is probably stuck. I just drop the pan and change the filter and top it off. I use the new Dexron VI. I can get valvoline for about $5 a quart. You may need to a torx bit to loosen the shifter bracket to get to a bolt under neither it.

jro909 Senior Enthusiast

jro909

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as far as i know dropping the pan and changing the filter and some of the fluid is quite easy, the pain the cheeks is making sure you don't pinch the seal and or tear it putting it back up onto the unit, if your talking like flushing a transmission or something major take it to the dealer(don't do a flush if you got alot of miles its bad news for the clutches) uhh besides that the majority of stuff needed to be taken care of on GMTs is front yard business, if you don't feel comfortable just take it to the dealer, i think i payed 125 for my filter and fluid change

bredbidsimon New Member

bredbidsimon

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toyota has told its North American dealerships to attach driver’s side floor mats to metal seat rails with self-locking wire ties, better known as zip ties, as what the automaker calls a “semi-permanent” fix.jimmy-rigging, baby! But hey, if it works, it's a lot better than crashing. You may even be tempted to zip-tie it yourself at home.

  • 2 months later...
03chevyburblt New Member

03chevyburblt

Posted
Posted
Who does their own transmission servicing/maintenance? I used to do my own years ago but in recent years I've taken it to the dealer. Is there anything complicated in doing the 4L60 on my 99 Sierra, or is it just filter and fluid? I would rather do it myself as the rest of the fluids/oil changes on the truck are fairly straight forward. For those service techs that work at the dealerships and do them daily are there any special procedures that are used on 99 and newer trucks with the 4L60...(computer/electronic stuff)??

For the DIYer what has been the best filter kits to use and why? Is your standard NAPA kit ok? Or is there a better GM filter kit available thru parts dept. at the GM dealer? What type of dexron do you guys use, the dexron III or the newer dexron?

I flush all of my transmissions via the upper cooler line, just off of the radiator. Simply, disconnect the line, connect a 6 foot plus, peice of clear tubing (Lowes/Home depot). On some transmissions the fluid comes directly out of the cooler line itself. However, I am almost certain, that the fluid would flow directly out of the radiator itself on these particular vehicles. So you would find the right size clear tubing, and sort of lodge it into the radiator/cooler line connection (place some clean rags just under connection for light spillage). You would then run the other end of this clear tubing into a 12-14 qt bucket, with one gallon increments. Basically run the engine (do not accelerate the engine), until 2-4 qts flow out, cut the engine, refil via filler/funnel equally what was extracted and so forth. You would continue with this until the fluid flow depicted a clear, dark red, grit free fluid. You would then add one bottle of lubeguard (very good product) to your fluid, thus concluding your pressure flush, and simply re-attach the line, in addition to checking for leaks. Transmission filters, if they are of the paper element could be changed every 30-40,000 miles, and or if they consists of the metal screen element, then one would almost never replaced them, as long as the filter didn't appear to be clogged up. However, I would check every 50-60,000 miles, by dropping the pan, to look for metal shavings, and clean the pan, thats about it. Budget wise, it all depends on fluid type, meaning synthetic or regualr ATF. Valvoline Max-Life is good choice for the money, but the lubeguard additive adds additional protection to the tranny. Synthetic should be the ultimate choice though, it is overall better protection for the transmission in the long run, especially if you do prolong hwy driving, as I do, I generally haven't towed anything though. Expect to use 12-14 qts of transmission fluid. www.lubeguard.com (has a vast selection of transmission additives).

 

Best Regards

Chris03Silver Enthusiast

Chris03Silver

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so i just did this last weekend. The bolt has thread lock on it from the factory and either a the guy who owned this truck before me never changed it or he just dropped the pan. my 03 z71 i had to use a Torx 30 i think it was and the bolts are 13 mill and the drain plug is 15mm. :D i took the shif linkage off all the way just got in the way. the plug will drain most the fluid but not all of it! so dont pour it down your arm like i did.... and... for the exhaust i didnt undo that didnt wanna take the chance of exhaust leak.. i undid the two 15mm bolts for the trans lifted teh rear of the transmission enuff to clear the exhaust and ta-da... was down .. i guess some of the trucks have shallow pans, mine was deep and i just bought both since i wasnt sure at the time.. hope i helped otu some...

 

Chris

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