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By Shawn Dutton
Sorry if this seems long winded but I want to provide as much info as possible.
Just picked up a 2019 Silverado 1500 custom. Has the 4.3 V6 with the 6 speed transmission (6L80 I believe)
The truck had 99 miles on it. Currently around 2500.
No issues out of the gate, after about a week of driving I noticed a very delayed shift I think it was from 1-2 or 2-3. The engine revved 1-2k high RPM than normal before shifting.
a few days later while on the highway (cruise set at 75mph) out of no where the RPM’s spiked as if it had downshifted. There was no additional load on the engine to cause this, like going up or down a hill. This happened a few times.
I called the dealership immediately and brought the truck to them a few hours later. Got a loaner for a few days while they looked over it.
They called me to come pick it up, said the tech noticed a little bit of rough shifting and said they “re-set” the shifting points. Since it was an intermittent problem for me I don’t think it arose for them.
So I took the truck home, no problems. My wife drove it to work that same night and the same problem happened again. This time the engine light came on.
I scanned the codes this morning and the ECM showed P0700 (transmission control system
the TCM showed P2714 pressure control solenoid D performance/stuck off.
So back to the dealer it goes, waiting for them to bring me a loaner this time.
I was was told by a dealer technician that GM has been having them put a different type of transmission fluid in some of these trucks due to issues with the torque converter. But I guess if a solenoid is stuck it could be due to a fluid issue as well? Just speculating.
I’m curious if anyone else has had similar issues. I haven’t had much luck finding anyone else online with the same problem. Which is guess is more of the reason I’m posting this, in case there’s someone else lost like myself. I will keep this updated when I get further down the road with the dealership.
I get that there are fluke problems that can arise, but this is a bit irritating considering it’s a brand new vehicle. I will say that the dealership I’m working with has been extremely supportive and not trying down play anything I’m complaining about.
Contributing Writer, GM-Trucks.com
General Motors has announced that NHTSA is mandating a safety recall for the following vehicles:
2014-2018 Chevrolet Silverado and GMC Sierra Pickups (1500 / 2500 / 3500) 2015-2018 Chevrolet Suburban, Tahoe, GMC Yukon vehicles 2015-2017 Cadillac Escalade
NHTSA reports that the amount of vacuum created by the vacuum pump may decrease over time. The group says that as the vacuum level drops, the brake assist decreases, and that this increasing braking effort, extending the distance required to stop the vehicle, thereby increasing the risk of a crash. This new recall covers 3.4 million vehicles.
The Problem: The brake pump uses engine oil to lubricate itself. If the pump becomes clogged with engine oil sludge the units ability to create vaccum is diminished over time. As a result, braking force and ability also drops. The issue is usually accompanied by a "Service Brake Assist" warning message in the dash.
The Fix: GM will reprogram the computer that controls the secondary brake assist pump. The secondary pump will now activate at lower speeds and different situations quicker to compensate for any lost output from the main pump. Since the pumps are not failing, GM has decided not to replace them.
GM's number for this recall is N192268490. In compliance with federal law, GM will notify owners, typically by snail mail. GM says that its dealers will reprogram the Electronic Brake Control Module. However, GM has not yet provided a notification schedule. Owners may contact Chevrolet customer service at 1-800-630-2438, Cadillac customer service at 1-800-458-8006 or GMC customer service at 1-800-462-8782.
If you own one of these vehicles and wish to check to see if your vehicle is included (or not) you can do so at this link immediately.
As with every safety recall, customers will not be charged by GM for the needed repairs or modifications.
NHTSA's public information on this issue indicates that many accidents have been reported to NHTSA including some with injuries. This recall is the result of a NHTSA investigation that lasted nearly a year. In its investigation report, NHTSA noted the following details about the problem:
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.
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 Standard Box Double and Crew Cab: 29.4 gallons 6.6 Diesel L5P Long Box Regular/Double/Crew Cab: 28.0 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
By Eroc K!llz
So i been having a issue, first off i am a mechanic seeking advice for more experienced with ac. the system is charged full and the ac fan comes on when it wants to some time i start up its blowing but shit off truck and then ac will not come back on for another couple days i first thought was ac clutch fan or resistor... just need some input if any
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