(2009) GMC Sierra 1500 ATF Drain?

GTR312 · January 4, 2012

I have a (2009) GMC Sierra 1500 SL Nevada edition. I'm currently in the process of trying to replace my AT filter and fluid. I noticed the AT drop pan does not have a drain plug. I was told a lot of different way of changing ATF on my truck. 1. Drop the AT pan, let ATF flow out. Only 40 % of ATF will flow out. Replace filter and gasket. Same as 1. but also disconnect ATF line from the AT pan, let the remaining ATF flow out. This method was the most interested one I could find: http://www.ehow.com/how_4519918_change-automatic-transmission-fluid-gmc.html the break down of the link is basically you need to find the fluid line the runs from the AT to the radiator (cannot find) disconnect it and run the engine in order for the ATF to flow into a oil pan. Re-connect it and continue with procedure with changing the filter. Any suggestion, help and advice will be much appreciated, thanks.

gmtech4 · January 4, 2012

drop the pan ,most importantly ,be smarter than the truck !!! big drain pan and tools, technique or spend an hr labour and book an appt ,,some jobs are best to farm out ,this is one if ya have to ask how !!,no offence please

i remove all bolts except one on the side and lower the other side obviously loosening the last bolt slowly,it controls the flow better

keep receipts as its under warranty if you do it or not

GTR312 · January 4, 2012

drop the pan ,most importantly ,be smarter than the truck !!! big drain pan and tools, technique or spend an hr labour and book an appt ,,some jobs are best to farm out ,this is one if ya have to ask how !!,no offence please

i remove all bolts except one on the side and lower the other side obviously loosening the last bolt slowly,it controls the flow better

keep receipts as its under warranty if you do it or not

I appreciate your advice. I'm very interested in getting familiar with my truck and the procedures of maintaining it therefore I'm trying to learn and maintain my own truck. I have all the tools etc. but lack the expertise. Your post on the procedure does not seem that difficult. My question will that procedure drain all the fluid (most of it) or is another step required? None the less, thanks.

gmtech4 · January 4, 2012

that is all that is required ,there are various opinions on it but listen to Rob and all is good otay??

yvw

Z45 · January 4, 2012

ATF and Transmission Filter Change Procedures (45k PDF)

GTR312 · January 5, 2012

ATF and Transmission Filter Change Procedures (45k PDF)

Awesome, I've been looking for something similar to that. For the past two hours I been trying to locate a diagram or picture of the ATF input line into the cooler on the internet, cannot find it. I seemed to find it on my truck but I wont to be extra sure. Any help regarding this?

I can describe what I think I see as the ATF line. There are two lines which are connected to the left bottom side of the cooler, I figure these are input lines. Right side of the cooler there are three lines connected, two of the lines re-connect to each other beside the engine and run parallel to the rear of the engine (I assume these are return ATF line since one line seemed to have a drop of translucent red color on the line) the third line runs toward the engine. Also there are two big hoses the run through the cooler which I'm pretty sure is the engine coolant.

Here are some picture I took. (Can't figure out how to embed the pictures) Here are the links.

Right side of the cooler.

http://imageshack.us.../img0103gs.jpg/

Left side of the cooler.

http://imageshack.us.../img0097vb.jpg/

Thanks for the help in advance.