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Hope nobody minds, but I'm going to start up a Quick Reference Guide for common parts/fluids/bulbs for the T1 HD trucks. I'll try to keep it updated if anything changes. If a mod wants to sticky it, I'm down for that too. Owners Manuals Chevrolet: https://my.chevrolet.com/content/dam/gmownercenter/gmna/dynamic/manuals/2020/chevrolet/silverado-2500-3500/2020-chevrolet-silverado-owners-manual.pdf GMC: https://my.gmc.com/content/dam/gmownercenter/gmna/dynamic/manuals/2020/gmc/sierra-2500-3500/2020-gmc-sierra-owners-manual.pdf Diesel Supplement: https://my.chevrolet.com/content/dam/gmownercenter/gmna/dynamic/manuals/2020/chevrolet/multimodel/2020-6.6-duramax-diesel-supplement.pdf Oil Changes 6.6 gas L8T (VIN code "7") Capacity: 8 Quarts AC Delco Oil Filter: PF63E / 19383806 Drain Plug Size: 12X1.75X18.15 6.6 Diesel L5P (VIN code "Y") Capacity: 10 Quarts AC Delco Oil Filter: PF26 / 89017527 Drain Plug Size: 12X1.75X18.15 Engine Air Filters 6.6 Gas: A3244C / 84121219 6.6 Diesel: A3248C / 84554703 Engine Fuel Filter 6.6 Diesel L5P: TP1015 / 23304096 Interior Filters Passenger Compartment Air Filter: CF185 / 13508023 Wiper Blades Drivers & Passenger Sides: 23387857 Spark Plugs 6.6 Gas L8T: 41-114 / 12622441 Glow Plugs 6.6 Diesel L5P: 68G / 12690238 Fuel Tank Sizes 6.6 Gas L8T, All Box/Cab Configurations: 36 Gallons 6.6 Diesel L5P Double Cab Long Box/Crew Cab Standard and Long Box Configurations: 36 Gallons. 6.6 Diesel L5P Double Cab Standard Box Configuration: 29 Gallons. 6.6 Diesel L5P Regular Cab Long Box Configuration: 28 Gallons. Diesel Exhaust Fluid Tank Capacity: 7 gallons Automatic Transmission Fluid 6L90 6 Speed MYD (Gas engine): DEXRON-VI Automatic Transmission Fluid 10L1000 10 Speed MGM/MGU (Diesel engine): DEXRON ULV Automatic Transmission Fluid. Transmission Capacities (Approximate): 6L90 6 Speed MYD (Gas engine) Pan Drop: 6.0 quarts Overhaul: 10.5 quarts Complete System: 12.4 quarts 10L1000 10 Speed MGM/MGU (Diesel engine) Overhual: 20.6 quarts Complete System: 22.08 quarts Transfer Case Fluid Electronic Shift Non-Autotrac MP 1625/1626–NQF: Dexron VI Electronic Shift Autotrac MP 3025–NQH: Dexron VI Transfer Case Fluid Capacities Electronic Shift Non-Autotrac MP 1625/1626–NQF: 2.4 Quarts Electronic Shift Autotrac MP 3025–NQH: 1.6 Quarts Brake System Hydraulic Brake System (Vehicles with DOT 3 brake fluid): DOT 3 Hydraulic Brake Fluid Hydraulic Brake System (Vehicles with DOT 4 brake fluid): DOT 4 Hydraulic Brake Fluid Wheel Lug Nut Torque All Models: 140 lb-ft / 190 N-m Front Axle 9.25" Axle Lubricant: 75w85 Synthetic High Efficiency Lubricant, 10-4091 / 19300457 Capacity: 1.9 Quarts Rear Axle 11.5" Axle Lubricant:75w90 Synthetic Lubricant, 10-4016 / 88900401 Capacity: 3.17 Quarts Rear Axle 12.0" Axle Lubricant:75w90 Synthetic Lubricant, 10-4016 / 88900401 Capacity: 3.17 Quarts- 24 replies
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Has anyone else used the AMSOIL OE ATF over the Signature Series in their 8 Speed? Any issues? Looking to get a flush done soon and want to make sure the fluid is compatible. I'd rather not shell out $300 CAD for the signature series when the OE will do. Thanks. -
I had purchased AMSOIL Signature Series ATF for my 18 Silverado - 6 speed. After having it sit for a while and never getting to a transmission flush on my own time, I called a local, honest, reputable transmission shop near me that has always treated my dad very well. They’re a no-bull, honest shop, and the owner is down to earth and knowledgeable regarding transmissions, as he should be. I informed him I had AMSOIL and wanted it switched with that, and he advised that for the 6L80E, it wasn’t a great idea. He has nothing against a better fluid, but he advised that AMSOIL doesn’t treat the electronics nicely, and it’s a common issue. I’m an AMSOIL guy, and do want him to use the AMSOIL fluid, but has anyone else heard of this or advise to simply use DEXRON VI and NOT AMSOIL? -
I bought two slippery Pete pumps on amazon, one for quarts one for gallons and neither fit! can someone point me to a pump that fits AC Delco gallon jugs? They have a huge cap and I don’t want to randomly buy another. thank you. -
I bought a gallon of Dexron VI from amazon because of price. Was going to do my transfer case and noticed the gallon pump I have is too small for it. The jig has a huge lid! Anyone know a pump that works on these?
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I had my transmission fluid flushed and changed by a non-dealer mechanic about 2 weeks ago at 55k miles and 4.5 years on my 2014 Sierra. This was the 1st transmission maintenance ever done. After the the service, I now feel hard shifts at times if I'm in stop and go traffic while rolling and just giving the pedal a little touch after being fully off the accelerator. I'm getting these hard shifts in other situations too. I've also experienced a situation when still cold where from a dead stop I'll start accelerating and have the transmission kind of all of a sudden kick, enough to squeal the rear wheels. Its kind of like there's some hesitation in acceleration and then it kicks in hard, but I don't see or feel the RPM's climb like I think I would if it was slipping. I don't notice any transmission slipping, but I've always felt like the throttle on this model has been so unresponsive, it could be slipping and I might not know it. So, I called my mechanic today and asked him to check what ATF he used. He checked and called me back saying it was a universal type fluid that says its good for Dexron VI (manual calls for Dexron VI). I trust this mechanic, and he's been fair in the past. He told me to bring it in and he would replace the fluid with ACDelco tomorrow at no charge. I'll give everyone an update on if that solves the problem, but I also wonder if doing the flush could have uncovered a worn transmission. I'm coming up on the 60k powertrain warranty, so I don't have too much time to wait and see. So, my questions are 1) could a universal type ATF fluid that's labeled for Dexron VI be causing these problems? 2) Without feeling transmission slip, would these symptoms indicate a worn transmission? 3) Could this be a computer control issue where I should disconnect the battery to force a re-learn? Hopefully this resolves itself, but if not I guess I'll have to be ready to take it to the dealer and have them diagnose it. I'm not even sure how good they'd bee at diagnosing this since I could see them saying hard shifts are normal like they often like to tell everyone. Oh, one other thing to note. The fluid level looks right on to me, and when the fluid was changed, I was told the the old oil looked good. -
Hello, I have a 98 S-10 ZR2. 60k miles, owned since new. Last few years it has seen very little service, 1000 miles per year roughly. It has always run, and in particular shifted, perfectly. Transmission properly serviced every 20k or so with correct spec Dexron fluids. We use the truck seldomly. We used it in September on a 100 mile trip and it operated and shifted absolutely perfect, as it always has. I used it a bunch at Thanksgiving, and it started to shift really early into what I guess is OD, as it would take the engine down to 500 RPM, lugging, then shift back and forth. "shifting" through manually would make it work fine. I found a thread here: http://www.gmtruckclub.com/forum/showthread.php/75572-4l60e-trans-problems that said that early upshifts can be due to confusion in 4wd status, and even a shorted wire on a 2wd can cause it to think it is in 4lo. I had pulled fuse #8, which made the 4x4 pushbutton selector deactivated when I was checking for parasitic draws (my battery drops voltage a bit faster than Id like, so I was checking it out). When I replaced the fuse, the truck went back to working like it always had. Perfect smooth shifting and no early shifts. The amount of mileage I put on with this "issue" was maybe 50 miles at most. After fixing that issue, Ive put maybe 50 more miles on the truck, all local, and it shifted and worked great, as it ever has. That is, until this morning. I decided to take it on a 40 mile interstate drive. I know my truck spins right at 2000rpm at 70 MPH. I noticed when driving that it was more liek 2300 RPM. I figure that the TC is not locking up. But what makes it very odd is that after doing the interstate mileage, when I was back on normal roads, the truck has started to do a very hard 1-2 shift, which it has never done before. So, any insight into this? All of this has happened in like four days of using the truck since last September, and all within even the same tank of gas - its not like Im driving the truck high mileage. Rodents are a possibility (chew a wire?), but I have never had a CEL, no indicator lights, etc. 4wd engages and operates, all is well. Any thoughts or suggestions? Recommendations on what to check or do? Thanks!
