By David Abla
my transmission when I disconnect the cooler tube on the top of the radiator to go to the transmission no transmission fluid comes out and it's showing a code P O 894 I just recently had the transmission rebuilt it's got about a hundred sixty thousand miles on it when I had the transmission rebuilt it had 130000
I'm trying to buy a 2004 Silverado 1500hd with the 6.0 and 4l80e. When test driving the transmission would shift through all the gears fine but if you let off the gas as soon as the rpms hit 2000 they would drop to 1500 to 1000 and there would be a loud grind/whine until you tapped the gas again. I'm assuming it's the transmission, maybe the torque converter. Any help would be great so I can figure out if the transmission would have to be rebuilt or if it's something simpler to fix
Hi, I have an 03' Yukon XL AWD with a 4L60E transmission. Does anyone know the torque specs for the transmission mount? From what I have found. the bolts that attach the mount to the transmission get tightened to 18 ft/lbs. However, I cannot find the torque for the nuts for the studs that go through the crossmember. The mount part # is 15113134 and here's a photo of it. Thanks!
Beating a dead horse here...
Have a Denali 6.2 that I just purchased from CarMax (with an extended warranty/Thank God!)
Tapping sound from the start.
Ran two tanks of 91 octane to eliminate possible octane knock.
Took me past the 7 day return policy and 30 day standard warranty with CarMax. Didn't really bother me because of the factory warranty.
Truck looked brand new. Even had the wrapping on the DVD player.
Popped the hood and started looking for an exhaust leak. I found a donut/flange laying on the crossmember.
Took it to the dealership. Found that the truck had two new fuel injectors and a new Catalytic Converter. Someone was searching for the cause of the sound.
Dealership tightened some gaskets and said the truck was good to go.
It made the deafening tapping noise on the way home.
I returned the truck to the dealership. Even though I have purchased 4 vehicles from them in the past to include a current 2019 Arcadia -- they had no loaner for me.
They kept the vehicle for two more days. Could not find the cause of the noise.
I went back to speak with the service manager. He was not happy.
He went on a ride with me and heard the noise. Claimed it was the transmission searching for the proper gear.
Weird because the noise happens constantly -- to include start up and idle.
Told me his 6.2 made same noises and it was normal.
Finally took it back to CarMax. They sent it back to same dealer with a promise to pay for diagnostics.
Miraculously, dealer finds lifters to be the issue.
I'll keep updated on status of cam, etc.
I think I'll trade this lemon in on a diesel or anything without AFM.
Will also not be purchasing from Bob Howard GMC in Oklahoma City.
New to the forum and need some help! I purchased a 2019 Silverado LT 5.3l 4x4 (new body style) about two months ago. I recently put on some bigger tires, rims and a 2" RC leveling kit. Shortly after installation, the engine light came on and the truck would not sift out of Auto to 2wd or 4hi. I'm also feeling some wonkiness in the back tires and transfer case...feels like it is stuck in 4hi on dry pavement. I had the codes pulled and something is causing a P189A and P1899 (transmission) errors to trigger. I did some research and found the issues could be a result of a speedometer calibration issue caused by the bigger tires. I was told a speedometer calibration unit should resolve the issue. I purchased an inline speedometer calibration unit from Hypertech, set the parameters and installed it. Unfortunately, the problem is still occurring. Any suggestions from anyone? Has anyone else experienced this? Thanks in advance for the help!
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