Power steering

[Gary2500LTZ]

Has anyone noticed their power steering making a moaning noise when hard over either direction? Wondering if this is normal. I have never had a vehicle make so much noise when having wheel cranked. Almost like fluid not flowing correctly. I have not checked power steering fluid level if there is such a check.

[newdude]

1 hour ago, Gary2500LTZ said:

Has anyone noticed their power steering making a moaning noise when hard over either direction? Wondering if this is normal. I have never had a vehicle make so much noise when having wheel cranked. Almost like fluid not flowing correctly. I have not checked power steering fluid level if there is such a check.

 

 

Normal especially if it has the digital assist which pretty much every crew cab HD this gen 2020-2026 has.  

[Crazy Canuck]

Wouldn't hurt to check it though.  

[Capt Bob]

19 hours ago, newdude said:

 

 

Normal especially if it has the digital assist which pretty much every crew cab HD this gen 2020-2026 has.  

Mine always has. I just back off a bit and it stops.

[Dunn]

had 5 of these trucks since 2020 and yeah its just the nature of them when at hard lock, I dont even pay attn to it anymore

[Pryme]

On 9/17/2025 at 8:17 PM, newdude said:

 

 

Normal especially if it has the digital assist which pretty much every crew cab HD this gen 2020-2026 has.  

How would I check if my wt has that? Hopefully not I don’t like options. 

[OS RR]

1 hour ago, Pryme said:

How would I check if my wt has that? Hopefully not I don’t like options. 

 

I'm under the impression WT/Custom doesn't get it.

[EXSlider400]

Yeah, my power steering flow sounds like it has air or rocks in it from day one… any pressure on the steering wheel in either direction it hisses and bubbles…sounds like this L8T is an L5P. I need to bring it to the dealer before the warranty runs out. From reading other responses though I’m afraid that’s just normal…. I guess the other option would just be to go test drive a comparable truck and see if it makes the same noise… but that still doesn’t fix it. I assume it is like others have said and related to the digital steering assist  (RPO code NV8). 
 

Did find this though:

 

https://static.nhtsa.gov/odi/tsbs/2025/MC-11013018-0001.pdf

Edited October 3, 2025 by EXSlider400

[Epsilon Plus]

For the 2020-2023 only the LTZ and above trim got the digital. Don't know about the 24+ but it's probably the same.

 

Use only PS fluid, not ATF. The system can be bled although it's potentially messy and doesn't look super easy. PS fluid expands so there is a cold and hot check mark just like the transmission. Check with engine running. 

 

You want to really hear it groan? Strap a stabilizer and some 35psi 37" tires to it and do a slow speed full lock turn  

[GMCustomerService]

On 10/2/2025 at 10:59 PM, EXSlider400 said:

Yeah, my power steering flow sounds like it has air or rocks in it from day one… any pressure on the steering wheel in either direction it hisses and bubbles…sounds like this L8T is an L5P. I need to bring it to the dealer before the warranty runs out. From reading other responses though I’m afraid that’s just normal…. I guess the other option would just be to go test drive a comparable truck and see if it makes the same noise… but that still doesn’t fix it. I assume it is like others have said and related to the digital steering assist  (RPO code NV8). 
 

Did find this though:

 

https://static.nhtsa.gov/odi/tsbs/2025/MC-11013018-0001.pdf

Our team would like to work alongside you during this process, to act as an extra layer of assistance between yourself and your dealership. So that we may learn more, we ask that you email us at [email protected] with "GM Trucks-EXSlider400". By sending us a message, you consent to the information you provide being monitored and recorded by GM or those acting on GM’s behalf, subject to the GM Privacy Statement:  https://www.gm.com/privacy-statement.

[Dunn]

correct it is LTZ and above that get digital....had a 2020 and 2022 LT and it hissed and bubbled at full lock and only had std standard steering, owned a 23 HC and currently a 24 SLT both with the digital and don't notice it as much and or maybe just dont use full lock......could be I am just used to it though, the steering is definitely noticeable at slow speeds between the 2.... like a 1500 with digital..

[Pryme]

9 hours ago, Dunn said:

correct it is LTZ and above that get digital....had a 2020 and 2022 LT and it hissed and bubbled at full lock and only had std standard steering, owned a 23 HC and currently a 24 SLT both with the digital and don't notice it as much and or maybe just dont use full lock......could be I am just used to it though, the steering is definitely noticeable at slow speeds between the 2.... like a 1500 with digital..

I don’t recall ever needing to crank the wheel to full lock. Ever. So I’ve never heard anything out of the ordinary. 

[Dunn]

On 10/10/2025 at 6:43 AM, Pryme said:

I don’t recall ever needing to crank the wheel to full lock. Ever. So I’ve never heard anything out of the ordinary. 

not that often but I have had to do it, streets are really tight where I live.....like the whole town was built for compact car, lol

[newdude]

Updating this topic a bit as I just noticed OP has in his signature that they drive a 2025 LTZ Trail Boss, so it would have the NV8 digital steering.

 

PIT5544H: Normal Characteristic - Hydraulic Rush Noise from Power Steering Gear - (Jan 24, 2025)

 

- LINK TO THIS PI - MC-11013473-0001.pdf

 

On 9/17/2025 at 8:07 PM, Gary2500LTZ said:

Has anyone noticed their power steering making a moaning noise when hard over either direction? Wondering if this is normal. I have never had a vehicle make so much noise when having wheel cranked. Almost like fluid not flowing correctly. I have not checked power steering fluid level if there is such a check.

 

[Gary2500LTZ]

On 10/16/2025 at 8:40 AM, newdude said:

Updating this topic a bit as I just noticed OP has in his signature that they drive a 2025 LTZ Trail Boss, so it would have the NV8 digital steering.

 

PIT5544H: Normal Characteristic - Hydraulic Rush Noise from Power Steering Gear - (Jan 24, 2025)

 

- LINK TO THIS PI - MC-11013473-0001.pdf

 

 

Thanks for the info....