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Posted

Did a pan drop today and replaced the filter and pan gasket. Also took care of the transfer case while under there. Filled both them up with the good stuff.

 

I don't think it's supposed to be brown and black [emoji53]

 

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Nice and clean!

 

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That's not red...

 

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Yeah man that's the good stuff (Kenny Chesney song)

 

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Did the old fluid smell burned? if not, you're fine. If so, you're screwed. Even with the "good" stuff.

Posted

Wow, pretty dark!

 

When I did the Silverado's tranny back in '10 with 40k on the clock, it was still cherry red. Used Amsoil, but it wasn't called "Signature Series" then. Same ATF though. Been through some heavy towing the past 45k miles, and it's still nice and red, although on light throttle 1-2 shifts I'm starting to notice a slip. That was a 100% fluid change then. I pulled the tranny line, and let the engine pump it into a bucket, dropped pan, changed filter, filled with new, then fired it up. I poured fresh stuff in until it came out the cooler line the same color as the new stuff. Went through 5 gallons of Amsoil - was pricey, but worth it. I can probably still get another couple years out of it.

 

I did a fluid flush on the Volvo last summer, and that fluid looked the same as CJ's, even after a flush. Went through 2 cases of ATF (didn't use Amsoil - just the NAPA Premium brand). Never had an issue with the tranny in that. It definitely shifts alot better now, however. Couldn't figure out why it was so black, but the car is 24 years old - who knows how the previous owner's handled maintenance ...

 

Noticed my fuel pump is getting loud in the Silverado, when I was checking my left rear tire pressure. Used to be dead silent. Great! :nonod:

  • Like 1
Posted

From what I remember it didn't smell burnt. I'm just wondering how it got so dark considering I swapped the stock fluid and filter around 15k so only 60k on this fluid, maybe from towing so much?

 

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Posted

Just received an other Youtuber cluster out of a Tahoe. At least this guy stopped after ruining the first motor islands. May be able to save this one. Sheesh!!! Normally I would charge extra but I think he learnt his lesson.

Posted

From what I remember it didn't smell burnt. I'm just wondering how it got so dark considering I swapped the stock fluid and filter around 15k so only 60k on this fluid, maybe from towing so much?

 

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Probably just the clutches that were used, or the heat the transmission was subjected to. When they get hot, the fluid always ends up dark.

 

That's the one benefit of living up here. On my last run to NY, 400 miles one-way, my transmission never got over 115° with 6,300 lbs. behind it. It was 4° ambient at times.

 

One thing I've always done is stuff the biggest tranny cooler I could find in front of the condenser. With the Silverado, since I spent so much on the initial purchase, and the performance bolt-ons, I never bothered with the trans cooler. The factory actually did a pretty good job on the one that's in there. My truck does have the tow package with the RPO code KNP (heavy duty trans cooler).

Posted

From what I remember it didn't smell burnt. I'm just wondering how it got so dark considering I swapped the stock fluid and filter around 15k so only 60k on this fluid, maybe from towing so much?

 

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My friend, 60,000 miles is WAY too long for fluid. You need to do the tranny fluid changes every 30k in normal driving conditions. Your tranny will thank you. Same thing for the front and rear diff and transfer case. regardless of how much use they get.

  • Like 1
Posted

My friend, 60,000 miles is WAY too long for fluid. You need to do the tranny fluid changes every 30k in normal driving conditions. Your tranny will thank you. Same thing for the front and rear diff and transfer case. regardless of how much use they get.

According to the owners manual changing the transmission fluid isn't even listed in the maintenance/service schedule. On the flip side under the serve schedule it does show changing it every 45,000 miles.

 

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Posted

Rule of thumb is 50k miles. With Amsoil you can double that interval, especially if you're not towing.

Posted

Rule of thumb is 50k miles. With Amsoil you can double that interval, especially if you're not towing.

I was really shocked that GM doesn't recommend changing the fluid on the normal schedule. Seems very odd.

 

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Posted

A week ago Friday, got my oil/all changed. Tuesday, got new tires on it. Friday, drove about 50 miles out on some desert dirt roads, north of Barstow, and went camping. Sunday, drove back on the same roads, down to Ontario & Montclaire, and then home. And today, I was going to rinse all of the dust/dirt off, but the brief storm that came through did it for me.

  • Like 1
Posted (edited)

Today so far in the shop, I sold and programmed a ( 22733524 ) FOB to a 2008 G6.

 

Then revived a dead 2004 HD cluster first repaired both supplies for the displays.

 

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Then changed all the bulbs to LEDs, this guy wanted cool white.

 

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Then all new motors...

 

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And voilà!

 

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Edited by Coby7
Posted

According to GM the life of the fluid is 100k miles under normal driving, 50k for severe service. Obviously I overshot it by about 10k miles. The tcase is the same as well.

 

The differentials are a "fill for life" aka 100k miles so when they grenade on you it's out of warranty, those will be done this week.

 

And after having it in there a few days the truck seems to shift smoother.

 

And JSDirt, these new trucks have a built in trans thermostat which fully opens around 192 or so, and I've never had it over 220 to my knowledge, I always keep it on the trans temp readout while towing

 

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  • Like 2
Posted (edited)

According to GM the life of the fluid is 100k miles under normal driving, 50k for severe service. Obviously I overshot it by about 10k miles. The tcase is the same as well.

 

The differentials are a "fill for life" aka 100k miles so when they grenade on you it's out of warranty, those will be done this week.

 

And after having it in there a few days the truck seems to shift smoother.

 

And JSDirt, these new trucks have a built in trans thermostat which fully opens around 192 or so, and I've never had it over 220 to my knowledge, I always keep it on the trans temp readout while towing

 

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In the 2017 silverado owners manual I downloaded earlier it didn't list changing it for normal. But specified 45k for severe. Seems very strange to not list it at all.

 

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Edited by crafferty
Posted

In the 2017 silverado owners manual I downloaded earlier it didn't list changing it for normal. But specified 45k for severe. Seems very strange to not list it at all.

 

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I'm gonna keep an eye on it a lot more closer for now on and once that nice red color wears away I'll do another pan drop. Wish I had enough to pump the torque converter full of this stuff too without the old stuff being in there, like JSDirt did

 

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Posted

Ahhh, I see what they (GM) did there ...

 

Transmission thermostat: so, in cold weather, the trans will never benefit from extended cold running. Less transmission life.

 

No service data in owners manual & no dipstick: in other words, they don't want owners maintaining ANYTHING on this vehicle (like Ford and Fiat/Chrysler). No dip stick, so everyone will think it's a miracle transmission that never needs servicing ... as it grenades at 100k, well out of warranty. Less transmission life.

 

 

 

Starting to think the big 3, since they jointly designed the new transmissions, are each getting a cut from new transmission sales. I bet they'll build a ton of them price them high, knowing that 98% of owners will never touch them, and the clutches will be turned to sawdust in 100k or less. Nice racket. :nonod:

 

Surprised the '17 mentioned anything about servicing it at all, severe or not. Maybe they've got enough complaints from buyers and are finally going to listen to them? Wouldn't that be a miracle ... :lol:

 

As far as I know, Ford and Dodge consider them completely unserviceable - when there's a problem, you replace the entire transmission. I've noticed every new vehicle I've looked under the hood on has no tranny dipstick.

 

Next automotive brainstorm: no engine oil dipstick ... :uhoh: Mark my words!

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