About a month ago I was quoted for a power steering pump?

[iboughtatahoe23]

Steering feels fine, I can feel little tiny vibrations in the steering when I turn and hear a groan like whine that seems to go with the engine as a I accelerate and or turn the wheel
Video here of me turning

 

[iboughtatahoe23]

When I say fine I mean the power steering definitely isn’t out but could be on way out.

 

[OR VietVet]

By the thread title, I assume you took it to a shop and they gave you a quote based off of the noise, correct? Sure would help to know the vehicle details but I know you have a rack and pinion. Does the quote include a p/s flush? If the power steering works ok and is just noisey, then a possible flush could fix the noise, but for how long? You could even try an additive and quiet the noise. Does it make the same noise when moving. Turning when sitting still at idle, is when it is the hardest on the p/s system.

 

[iboughtatahoe23]

By the thread title, I assume you took it to a shop and they gave you a quote based off of the noise, correct? Sure would help to know the vehicle details but I know you have a rack and pinion. Does the quote include a p/s flush? If the power steering works ok and is just noisey, then a possible flush could fix the noise, but for how long? You could even try an additive and quiet the noise. Does it make the same noise when moving. Turning when sitting still at idle, is when it is the hardest on the p/s system.

Noise seems to intensify as I turn at idle. But I can’t speak for driving and turning. Did the video load for you? The quote was $500

 

[OR VietVet]

Any rig will have more p/s noise turning at idle. How loud it is and what kind of noise says whether it has a problem. What are you getting for the $500? Please don't say they did not give you documentation and it was all verbal. You should always always always get documented what you are getting for the money. Also, is it a new part or reman?

 

[petethepug]

Before you go down this road take the truck to a jiffylube type place that’ll swap out your p/s fluid. There is a known issue occurring with p/s fluid, the OE GM fluids in particular that pisses off the p/s pump and causes cavitation.

BYOF. Bring your own fluid to the bay for your service. Purchase a replacement fluid that will cost more because it’s loaded with conditioners. After my new p/s pump was installed in my 08 Denali, it was not happy. Another reman GM pump was installed and it was the same. After the Indi contacted a dealer tech, he got the info to swap the GM fluid out and …. fixed.

 

[iboughtatahoe23]

Before you go down this road take the truck to a jiffylube type place that’ll swap out your p/s fluid. There is a known issue occurring with p/s fluid, the OE GM fluids in particular that pisses off the p/s pump and causes cavitation.

BYOF. Bring your own fluid to the bay for your service. Purchase a replacement fluid that will cost more because it’s loaded with conditioners. After my new p/s pump was installed in my 08 Denali, it was not happy. Another reman GM pump was installed and it was the same. After the Indi contacted a dealer tech, he got the info to swap the GM fluid out and …. fixed.

Thanks I will look into that. Maybe the mechanic was right about my ps pump and or pulley, the noise I was having in v4 mode while DRIVING stopped once I got AFM disabler The plug in… but I noticed this morning (it’s getting colder outside too) that when I stand in front of the car I heard the same grinding noise every few seconds come and go and then it just stopped altogether. I’m sure it will get worse as it gets colder. I’m pretty sure it’s the power steering pump?

I’ll link the noise that I think/thought was the AFM related but I guess could be the power steering pump

Video for grinding noise here:
Grinding noise

 

[iboughtatahoe23]

What’s the worse case scenario? Just no power steering?

 

[Joseph Garcia]

What’s the worse case scenario? Just no power steering?

Been there and done that (not by choice). These trucks are absolute monsters to operate without power steering.

 

[iboughtatahoe23]

Been there and done that (not by choice). These trucks are absolute monsters to operate without power steering.

I bet! 6000lb…

 

[petethepug]

Truck is absolutely inoperable without power steering. I lost an accessory belt at 65 exiting a highway coming up to a 4 way signal changing to a red light and 5 teens in the YXL Denali.

No brakes, no steering, steam pouring out of hood as there’s no coolant circulation either. I could only get a 1/4 turn on the wheel, hammered the E brake on and both feet on the brake going downhill. I wasn’t stopping.

Fortunately I got through the light right after it went red. The intersection was huuggge because it was under a train trestle, so my wide turn didn’t cause the 3T behemoth to plant into anyone or anything.

I rolled into a parking lot across the street from a “stripe club” where AAA towing abandoned us for 3 hours. THIS is the reason GM quietly went to electric power steering in 2015. If it goes, you might not make it out to talk about it. You’re just talking about the p/s not the entire accessory belt but no steering is just as exciting.

 

[me51]

...There is a known issue occurring with p/s fluid, the OE GM fluids in particular that pisses off the p/s pump and causes cavitation. ...

Which fluid is better? I replaced my power steering fluid some time ago and thought that the pump is still a bit noisy even with new oil in the system. I used Amsoil Multi-Vehicle Synthetic Power Steering Fluid which is compatible with GM 89021184.

 

[strutaeng]

I once lost power steering (hydroboost brake setup) on my old K3500 CCLB. I left my house loaded with like 3,000 lbs of busted concrete and rock headed to the landfill. I did hear a whine pulling out of my driveway but didn't think much of it.

At my first my red light stopped the brake pedal went to the floor and when I took off I discovered I lost power steering assist. I was about 2 miles down the road. I popped the hood and nothing seemed wrong. I decided to limp back home. Good thing is there was a 20 MPH school speed zone. I literally rode on my brakes with my foot on them and used the e-brakes as extra braking power at the red light. It was pretty scary but I had to just keep calm and thank God there was very little traffic at that time. It was like 2:30 pm.

What had happened is the PS pump pulley shaft sheared off inside and the pulley was just freewheeling. When I tried the pulley puller the thing just slid out!

 

[petethepug]

I’m not sure what the Indi replaced the OE p/s fluid with but he said it was 3x as much as OE. It took about 2-3 weeks of driving, working the p/s system. That made it quiet down. It eventually got all the air out of the system.

Which fluid is better? I replaced my power steering fluid some time ago and thought that the pump is still a bit noisy even with new oil in the system. I used Amsoil Multi-Vehicle Synthetic Power Steering Fluid which is compatible with GM 89021184.

There is a known issue occurring with p/s fluid, the OE GM fluids in particular that pisses off the p/s pump and causes cavitation.

 

[iboughtatahoe23]

Truck is absolutely inoperable without power steering. I lost an accessory belt at 65 exiting a highway coming up to a 4 way signal changing to a red light and 5 teens in the YXL Denali.

No brakes, no steering, steam pouring out of hood as there’s no coolant circulation either. I could only get a 1/4 turn on the wheel, hammered the E brake on and both feet on the brake going downhill. I wasn’t stopping.

Fortunately I got through the light right after it went red. The intersection was huuggge because it was under a train trestle, so my wide turn didn’t cause the 3T behemoth to plant into anyone or anything.

I rolled into a parking lot across the street from a “stripe club” where AAA towing abandoned us for 3 hours. THIS is the reason GM quietly went to electric power steering in 2015. If it goes, you might not make it out to talk about it. You’re just talking about the p/s not the entire accessory belt but no steering is just as exciting.

Of course… when one thing fails on these it all fails.