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01 gmc jimmy
02-02-2014, 04:17 AM
Post: #1
01 gmc jimmy
Recently had transmission rebuilt and found out that the upper transmission line was also bad so went to parts store and bought a new quick connect line and also a fitting..... I was wondering where the line connects to trans if it was on top trans or on the side and if you all knew any tricks to make the job easier and faster..

trans is the 4l60e with 4.3 lt motor
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02-02-2014, 05:08 AM
Post: #2
RE: 01 gmc jimmy
Both cooler lines go to the passenger side of the transmission. Usually; if you get the drag light positioned just right by sticking it up on top of the transmission, you can almost see them. Then you will need to figure out how to wedge your hands up in there above the exhaust pipe. Once your hands are in the right position you will know because you won’t be able to see anything anymore and the light will be burning a hole through one of your hands. You can use a regular clip release tool or fashion a small hook to pull the retaining clip out. Or; since you bought the whole fitting, you can use a wrench and screw the old fitting out with the line still attached. It doesn’t matter, none of those 3 ways are easy. Once you finally do get it loose the final insult will likely be a face full of transmission oil. Now you can go wipe the oil out of your eye, bandage your blistered hand, and start to put it back together.

I think that there are one or two small bolts up toward the starter that anchor the lines in place that are nearly as much fun.

The only thing I can think of to make the job any easier is to find someone with hands the size of a 5 year old girl and arms with 3 elbows & let them do it for you. Other than that it is just one of those jobs that you’re glad you don’t have to do often. Be patient, wear safety glasses, and you’ll do fine.

Let us know how it goes for you.

Thanks for using the forum,

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02-02-2014, 11:45 AM (This post was last modified: 02-02-2014 11:53 AM by Rupe.)
Post: #3
RE: 01 gmc jimmy
Just did 2 sets of lines on that trany last week, although in an Astro van 4.3 Ltr. To give you a better picture of where the lines go into the trany, it's maybe 2-3 inches rearward of the dip stick tube on the side. There may be a heat shield blocking your view. The shield is held in place with 2 bolts (10 mm head) just above the pan gasket area plus a clip that secures to the tube itself. That one pops off. The retaining clips on the fittings will give you fits if your eyes are like mine. They are VERY small and hard to see. Look at the new fitting to see how they work.... and save the old clips because you may need it if one flies away! Those new fittings have a pipe thread so use a little pipe dope to get a good seal.

BTW, if space is too tight for your hands you may want to unbolt the crossmember and lower the rear of the trany a few inches with a floor jack. You might gain 2-3 inches without pulling the torsion bars if you use a crow bar and a block of wood.

I bought new OEM lines for around $33 each so had to wiggle everything in from one end. Including removal of the fan and shroud (Astro vans are tight up front) the job took about 3 hours on a lift.

Another pointer (not sure if it applies to the S-10 Jimmy) is the lines are secured to the right side of the aluminum oil pan. Over the years that bracket will chafe a hole in the line, which is why mine needed replacement. I made a chafe guard using short pieces of vac hose split in the side to install them, then reinstalled the bracket.
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