Sign up for FREE! Become a GM-Trucks.com Member Today!
In 20 seconds you can become part of the worlds largest and oldest community discussing General Motors, Chevrolet and GMC branded pickups, crossovers, and SUVs. From buying research to owner support, join 1.5 MILLION GM Truck Enthusiasts every month who use GM-Trucks.com as a daily part of their ownership experience.
By Big R ED
Patient - 2019 1500 LD, 5.3, 6 sp, 7200 miles old, Covid-19 negative. Symptoms - 2-3 second shutter / shake / rumble, during light acceleration, 30-40 MPH and low RPM. Happens while both in V4 mode and while in v8 (manual w/ transmission set to L5). I thinks its the torque converter, but surfing the forum I see this issue mainly referenced to 2015+/- K2s and I'm not sure if they changed the trans in the final years. I'd appreciate either a TSB # or a link to another posting were I could find the TSB. I'd like to be able to take to my dealer and say "HERE....READ....FIX" (politely). Many thanks!
By Mallery O'Hara
After many many hours of forum reading and trying to find a answer for a problem like mine I've finally given up and decided to just ask.
I've got a 2001 Silverado 1500 LS 2wd with the 5.3L. We were driving down a back road the other day and to simply say that it was muddy would be a huge understatement. Had I not know better I wouldn't have believed it was an actual road and not a trail. The mud was so deep that it reached clay in spots and we basically snowplowed mud with the front bumper. After making it back to the highway we went to go accelerate only to be bounced around wildly and were unable to go much faster than 80km/h due to a random and sudden lack of 3rd gear and overdrive. Limped the truck home and did a transmission fluid and filter change the next day. Fluid was filthier than heck, dark dark brown in color sort of like Cola. After that now the truck sometimes finds 3rd but 4th is nowhere to be found and once you get over about 70km/h it shakes so hard it feels like the worst washboard despite doing our best to get all the mud out of the wheels. Reverse still works fine. Looked under the truck and there does appear to be a bent crossmember but the frame still looks fine and straight.
Some backstory; Never had any transmission problems before this or signs of slipping. The tires on the truck are oversized, from a stock 245/75r16 to running 275/70r17. At present there are no rear brakes, had a bolt on the caliper come off one day and long story short ended up disconnecting them and pinching off the lines for the back brakes. We also have kids who like to play driving and occasionally jerk on the shifter, one day our toddler somehow manged to get the truck out of drive without hitting the brake and it started rolling, it didn't go very far before I stopped it but nevertheless was certainly surprising.
So my question is; what could be causing this to happen? Is the transmission completely gone and if so why no warning signs? Could it be the 3/4 clutch pack, the shift cable, transmission mounts or something else? Any input would be appreciated!
2019 Silverado 1500 z71 with 8K miles, 3.23 rear, 8 speed.
Today I have towed about 8000lbs of cattle and trailer. I prior towed an old farmall tractor back.
Both times when towing over 6000lbs, I had the transmission in L6, tow haul mode. Sometimes when taking off from a stop, it almost felt like the truck started in 2nd, not dropping down the first. Would it do that? Or is the torque converter just being floated as RPM's rise, and possibly I am not feeling the shift from 1 to 2. This transmission is crazy smooth compared to my 6 speed.
Truck drives great otherwise. Ran it to town empty later, no issues. Even ran it thru the Low mode gears, and it starts in first normally. Thought maybe this was towhaul mode trying to avoid unnecessary shifting if still rolling. Transmission running cool, never over 180 even with that load at 60-70 mph.
Thanks for sharing your experiences.
By Brizzo Jenkins
I have the 4.3 L V6 Silverado that calls for 6 quarts of oil. However, if I put 6 quarts in the truck it seems to be well past the full “waffle mark“ (crosshatch fill zone)on the dipstick. It actually almost goes up to the point where the dipstick reader and the wire connect. Seems awfully high. However, if I put 5 1/2 quarts in it, it almost reaches the top of the waffle impression.
and yes, I completely emptied the oil and drained it on a flat surface.
in fact, when you read the dipstick with 6 quarts of oil in it, it’s almost hard to tell that the oil is actually going well above the top of the full mark of the dipstick because it tapers off at the top. If you hold it in the perfect light, you can tell that it is well above the waffle mark
Anyone else notice this oddity in the dipstick reading?
Recently Browsing 0 members
No registered users viewing this page.
Most OnlineNewest Member
Who's Online 74 Members, 0 Anonymous, 1,829 Guests (See full list)
- Kaioluhia Hamakua
- Cory Hicks
- Chad Rife
- Kyle's AT4
- Ithan Henry
- Mike Honcho
- Gary Lamborn
- Matthew Ernst