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I have a 2017 Chevy Silverado 4x4 5.3l V8 with the 8 speed transmission. I already flushed out my transmission and filled it back up with the Mobil 1™ Synthetic LV ATF HP blue label. The question is, do i also use the HP fluid for my transfer case? Or do i need to use just a standard ATF fluid instead. I cant seem to find a straight answer on this. The owners manual states to use DEXRON®-VI Automatic Transmission Fluid. Would using regular ATF in the transfer case and HP ATF in the transmission cause any issues? Thanks in advance!
So I have a 2017 GMC Sierra 1500 with the 5.3 at 35k miles and I got a flashing CEL for about 30 seconds a few weeks ago on the highway and took it it to auto parts store but it had no codes present. About a week and a half ago the CEL came on constant and it came up with the P50D Rough Idle and so I got oil changed and ran some fuel system cleaner through and after a couple days the light started flashing and ran rough for a few min, I parked it and started it 10 min later and it was a solid CEL again but I was able to pull a P300 General misfire code. Today it did the same thing but ran worse than ever and I thought it was going to die on me, shut it down for 10 min and it ran ok. Before I start throwing money at this where should I start, spark plugs, coil packs, injectors? I'm at a loss with only 35k and just passed the 3yr warranty. Thanks for any advice.
I have an 06 Silverado with 215k miles. Has the L33 Aluminum Block 5.3 in it. It runs great, has good power, but has an odd ticking/knocking noise. It doesn’t make the noise until it’s been running for about a minute so I don’t think it’s exhaust. I also do not think it’s a lifter because it sounds more lower end towards the rear of the engine. Has anyone had any experience with these L33s knocking? It has been making this noise for a while now and it’s very annoying/embarrassing. I’m not sure if oil has anything to do with it but I use penzoil 5w30 full syn. Let me know if you have any ideas, thanks.
Hello im new to this forum. I have been searching for silimar sounds my truck is making on here but i can't seem to find one. So my truck is a 2020 silverado rst 5.3 8 speed crewcab 4x4 and has 1,600 miles. It makes this clicking sound similar to a clock. I went underneath the truck to listen for the sound and it appears to be coming from transmission area. Any thoughts of what the sound is? Ill attach a sound clip. Its a cold start but it also does it when its warmed up.
Long time lurker who finally created an account. Y'all have been a wealth of info and I really appreciate it.
I have a 2001 Tahoe LT Autoride with the 5.3. My father-in-law bought it new and I bought it from him when he upgraded to a 2019 Tahoe Premier. I've been going through the Tahoe since buying it from him. It was always maintained at the dealer and serviced at every interval.
The issue I am having now is a hard start when cold. It takes at least 2 cranks to get it started in the morning or after a long period of not driving.
I have searched the forums and found some help but no threads with results. Here is what I have done so far to remedy the issue.
-New fuel filter
-New fuel pump
-Techron in tank (one bottle so far)
I have a new fuel pressure regulator coming and will swap that next but the telltale signs of failure aren't there (gas leaking through vacuum line).
The truck had one other issue that has since been fixed. It would overheat (on the gauge) on hot days mainly at low speeds and belch coolant when turned off. I ended up replacing the fan clutch, coolant temp sensor, expansion tank, thermostat, and expansion tank cap.
Any advice would be hugely appreciated!
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