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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

Thanks to all that contribute to the forums - I’ve found so much info in here that has helped. I’m about to install a CST 4.5” lift and I need a few torque specs. CST doesn’t provide hardly any and when I compared torque specs from similar BDS or ReadyLift kits they seemed to be way off from the OEM torques I found. I did my best to find most of the torque values but wanted to have someone verify them for me. ive verified some of the front suspension torques from other parts of this forum but here’s the ones I want to double check. - Steering Rack Mounting Bolts: 162 ft/lbs (drivers side), 74 ft/lbs (passenger side) - Front Diff mounting: 75 ft/lbs - front driveshaft yoke retaining bolts: 18 ft/lbs - front axle nut: 188 ft/lbs (seems like a lot!) - Sway bar bushing bracket: 37 ft/lbs - swat bar end links: 17 ft/lbs - tie rod spindle: 26 ft/lbs + 85*-100* - front brake caliper bracket: 170 ft/lbs not sure what yall have torqued the lower subframe crossmembers to but I think BDS does 125 ft/lbs so that’s what I was probably gonna do. thanks everyone!

Exactly as the title states, RunVSE has released emissions compliant tuning for the LM2 Duramax in the Sierra and Silverado platform (pre-refresh). https://runvse.com/2020-2022-3-0l-lm2-duramax-emissions-compliant/ https://youtu.be/lGBM54eJ1Vw

Hopefully someone can help me, I made a dumb mistake of loosening the clutch lever pivot pin on my Sierra 1500 transfer case. Transfer case is a np246. I kid you not I have looked online for hours looking for the torque spec of that clutch lever pivot pin. Just want to torque it back to where is was. If anyone knows the torque spec for it I would greatly appreciate it. Below is a diagram of transfer case, #13 is the clutch lever pivot pin

Hello! I have taken my truck to a couple shops but no one can seem to find what wrong with it. When I come to a stop, my truck acts like it wants to stall out. It doesn't happen all the time but it is becoming more frequent. When stopping, the rpms die, all my gauges drop to zero and all my warning lights flash at me and turn back off. I don't have a check engine light on and when my truck is scanned, there are no codes that come up. I have been told that it is possibly bad torque converter solenoids but I have a weird feeling that I might have some electrical gremlins somewhere. There have been times where I am driving down the road and I go to make sure my windows are rolled up and the gauges due while rolling and my electrics cut out for a second and come back on. There was also once where a truck pulled out down the road from me so I applied the brake to give them room and my truck downshifted hard and jumped to 3500 rpm and felt incredibly sluggish to get back on gas and up to speed. Any help or any direction to a fix is greatly appreciated. Please help me find out what's wrong with my truck! Thank you!

Hey guys, new to the forum. I have a 2016 Silverado 1500 with the dreaded whine that seems to be the torque converter. I am almost certain that is what it is. The only video I’ve found that has the same exact sound is here How hard is it to pull the transmission just to swap out a nee TC? Does that sound like the TC or the pump? Anything I need to be sure I do? Truck is still driving fine, but not sure for how long. Any tips would be appreciated. Also looking for the best TC that will last.

By Zane Merva Executive Editor, GM-Trucks.com 6/18/2014 General Motors has released the final engine power figures for the up coming 2015 Chevrolet Colorado and GMC Canyon. The standard 2.5L four-cylinder engine will produce 200-horsepower and 191 ft-lb of torque while the optional 3.6L six-cylinder engine will be rated at 305-horsepower and 269 ft-lb. Properly equipped, the mid-size truck duo will be rated to tow up to 7,000lbs when it goes on sale later this year. No further information on the optional 2016 2.8L Duramax diesel engine was released at this time. Chevrolet/GMC Press Release Chevrolet Colorado and GMC Canyon Top Segment in Power DETROIT – The 2015 Chevrolet Colorado and GMC Canyon will have the most horsepower in the midsized truck segment when they go on sale this fall. The Colorado and Canyon’s available engines provide customers choices to fit their varied lifestyles. The 2.5L I-4 has been rated at 200 horsepower and 191 lb-ft of torque, while the 3.6L V-6 is rated at 305 horsepower and 269 lb-ft of torque. The Colorado and Canyon will also provide class-leading maximum trailering capabilities, with the capacity to tow up to 7,000 pounds when properly equipped. That’s more than enough to take a truck full of friends, gear in the bed, and a trailer full of toys to your favorite weekend adventure. Each engine features direct injection and variable valve timing to make the most of power and efficiency. Both engines are based on proven engine designs found throughout the General Motors’ family, but are optimized for the demands of truck use with the latest technology for improving performance and efficiency. This includes torque at lower RPMs for better towing power and a more confident feeling while pulling a trailer. Both engines are matched to a six-speed automatic transmission; a six-speed manual is available on select extended cab 2WD models. The six-speed automatic is tuned specifically for the truck engines, offering features like auto grade braking and tow/haul mode. “Every decision we made considered the wants and needs of midsize truck customers. The 2015 Chevrolet Colorado and GMC Canyon are engineered to deliver class leading horsepower,” said Anita Burke, vehicle chief engineer for Midsize Trucks. “Not everyone needs the size or the capability of a full-sized pickup. Now customers have a viable option in a smaller package.” Class-leading horsepower also comes with efficiency, courtesy of dual-overhead camshafts with variable valve timing, direct injection, and jet-spray piston cooling, while aluminum blocks and forged-steel crankshafts ensure a long-life cycle. The Colorado and Canyon will be assembled at GM’s Wentzville, Mo., assembly plant with start of production in fall 2014. Attached Images: Click here to view the article