Tranny issues, would like opinions

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rpjn59
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Tranny issues, would like opinions

Post by rpjn59 » Tue May 19, 2020 1:02 am

Hello, I'm having transmission issues, slippage mostly, I was hoping to get expert opinions and suggestions.

- 2004 2wd, 4.3L passenger van. 130+k.
-Van slips in OD, not all the time, so kind of confusing, but most of the time.
-slips shifting to OD from third if not babied.
-slips from 2-3rd, again if not babied.
-1-2nd seems ok.

~ 2 weeks ago this started, it's been getting just a tiny bit worst every day, I do very little driving daily 10-15 miles.
- check fluid it was at the bottom of the X-hatching.
- added 1/2 bottle (12 oz.) of Lucas tranny anti slip to top off fluid, ah... didn't seem to do anything.
- can only really drive it no surface roads now, as it's almost impossible to say in OD. Plus third slips when under load also.
- Today you could smell the burnt fluid from outside the vehicle,assuming clutch pack is shot, checked and could not see any dripping/leaking fluid.
- Anything I can do my self? change clutch pack, filter, fluid, elec. shift solenoids.
- if it needs full shop rebuild, what should I expect, parts, labor???
- info/education on torque convertor
- currently don't do any towing but is an upgraded cooler recommended?

Thanks in advance, Ray
04 Astro
Passenger

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okie1
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Re: Tranny issues, would like opinions

Post by okie1 » Tue May 19, 2020 11:53 am

Find a transmission shop that gives free diagnostics, nothing to lose. Get a few estimates, shop around. Good luck.

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okie1
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Re: Tranny issues, would like opinions

Post by okie1 » Tue May 19, 2020 11:53 am

Find a transmission shop that gives free diagnostics, nothing to lose. Get a few estimates, shop around. Good luck.

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Herbie
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Re: Tranny issues, would like opinions

Post by Herbie » Tue May 19, 2020 3:47 pm

Yes, it sounds like you've got issues. I recently had to do a rebuild on my tranny too. A lot of weight with too-tall gears and tires during the first years of my ownership didn't do it any favors.

The upside is that 4L60Es are ubiquitous, and lots of folks know how to rebuild them. I opted NOT to consider a junkyard trans because that'd be half the labor costs of a rebuild with a TON of uncertainty on the service life of the replacement. Better to have my own rebuilt, I figured. My trans shop recommended (and I opted for) a full Heavy Duty rebuild that basically brings the 4L60E up to 4L80E specs. Not cheap, but given what I have invested in my van otherwise (camper conversion, axle work, etc.), I figured I wanted the transmission to last at least as long as everything else. My total was just under $3100.
rpjn59 wrote:
Tue May 19, 2020 1:02 am
- currently don't do any towing but is an upgraded cooler recommended?

Yes, a big trans fluid cooler is basically a must for our vans, especially if you spend any amount of time going slow (trail work, or traffic) or hauling a load (my van is always heavy with the camper conversion stuff). There's a stickied post that has the parts and procedure you'll need - very DIY friendly. (But it isn't going to fix your current issues.)
"My minivan is cooler than your bro-truck"
2003 Astro AWD Astrolander/ZMB - GTRV Top Transplant, 4" OLV Lift, NP233 T-case, evolving interior
1995 Safari GTRV Organ donor - gutted and gone.
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rpjn59
I am merely driving my van
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Re: Tranny issues, would like opinions

Post by rpjn59 » Wed May 20, 2020 6:37 pm

Herbie, was is the parts diff. between a normal rebuild and a heavy duty one?

Ray
04 Astro
Passenger

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Herbie
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Re: Tranny issues, would like opinions

Post by Herbie » Wed May 20, 2020 8:40 pm

I'd need to find my build sheet to have the full list, but off the top of my head:

Uprated pump and accumulator, larger sun shell for the planetary, I think an updated sprag for the overdrive, an uprated belt, and servos.
"My minivan is cooler than your bro-truck"
2003 Astro AWD Astrolander/ZMB - GTRV Top Transplant, 4" OLV Lift, NP233 T-case, evolving interior
1995 Safari GTRV Organ donor - gutted and gone.
Image

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