Transmission Flush
Moderator: F9K9
Transmission Flush
Would anyone have a problem with Aamco Transmissions doing a transmission flush on their truck vs. a Chevy dealer? Aamco's full system flush is $69.95. The dealer wants $135.00. Both are flush only, a filter change is extra. Your thoughts?
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killian96ss
- Crew K Elite
- Posts: 2669
- Joined: Tue Sep 09, 2003 11:53 am
- Location: Sacramento, California
If you have AAMCO do it make sure you watch them to verify that they actually hook it up to an exchanger and don't just drain and refill by taking the pan off. 
I have had bad luck with AAMCO in the past (very dishonest).
How many miles do you have on your tranny?
I would replace the filter if you have more than 30k miles.
Steve
I have had bad luck with AAMCO in the past (very dishonest).
How many miles do you have on your tranny?
I would replace the filter if you have more than 30k miles.
Steve
WHOOPS! Just noticed the date of the post above. OH WHAT THE HELL!............Why not just do it yourself.
I learned this method on a F*#D
forum a few years ago when I had a AOD-E 
behind a 300-6. It's cheaper than having a shop do it and you KNOW ALL the Fluid is changed.
Get a hose barb fitting to go on the upper tranny cooler line fitting for the radiator. And about 20 qts(5GALLONS) of ATF.
Remove the upper line from the radiator and install the hose barb and hose (about 6ft of 3/8 or whatever size clear hose fits the barb, from Lowes). put the end in a drain pan.
Have a helper cycle the engine on and off.
1.) Turn on engine and run until you see air starting to come out of the hose, shut off engine, and fill with 1 gallon of ATF.
2.) Repeat #1 until ATF runs bright red and shut down when you see air again. (Usually 12-15 qts or 3-4 gallons)
3.) Pull pan, which will be empty, and change filter. Install a drain plug if you so choose. Or even a sending unit for a temp gauge.
4.) Re-install pan with new gasket.
5.) Fill trans to cold mark.
6.) Start and check for leaks.
7.) While running doublecheck level and add ATF as necessary.
Dad's 96 Jimmy was getting sloppy with it's shifts (80,000 mi) and this is how we did it. Changed out ALL of the ATF and the filter. Runs as well as it did new. Shifts are crisper, and the TCC doesn't slip or hunt as much. AND YOU DON'T get as DIRTY!!!!
Larry
I learned this method on a F*#D
forum a few years ago when I had a AOD-E behind a 300-6. It's cheaper than having a shop do it and you KNOW ALL the Fluid is changed. Get a hose barb fitting to go on the upper tranny cooler line fitting for the radiator. And about 20 qts(5GALLONS) of ATF.
Remove the upper line from the radiator and install the hose barb and hose (about 6ft of 3/8 or whatever size clear hose fits the barb, from Lowes). put the end in a drain pan.
Have a helper cycle the engine on and off.
1.) Turn on engine and run until you see air starting to come out of the hose, shut off engine, and fill with 1 gallon of ATF.
2.) Repeat #1 until ATF runs bright red and shut down when you see air again. (Usually 12-15 qts or 3-4 gallons)
3.) Pull pan, which will be empty, and change filter. Install a drain plug if you so choose. Or even a sending unit for a temp gauge.
4.) Re-install pan with new gasket.
5.) Fill trans to cold mark.
6.) Start and check for leaks.
7.) While running doublecheck level and add ATF as necessary.
Dad's 96 Jimmy was getting sloppy with it's shifts (80,000 mi) and this is how we did it. Changed out ALL of the ATF and the filter. Runs as well as it did new. Shifts are crisper, and the TCC doesn't slip or hunt as much. AND YOU DON'T get as DIRTY!!!!
Larry
2002 S-10 ZR-5 Quad-CAB
1995 GMC Jimmy 4Dr. SLT
1995 GMC Jimmy 4Dr. SLT