Push on the gas, vehicle will not move.

[glmoore0001]

Any chance it feels brake related, such as a sticky caliper or the ABS pump misbehaving? If not, when related to the transmission, the first thing we do is check the pump and pressure. Who do you know with a good bi-directional scan tool that can check the brake pressure and look around the transmission?

I may have a guy that has a capable scanner. I had a similar situation on my Ram 2500 and had to replace some very expensive wheel bearings that were causing me to loose my power brakes. Pretty common problem on those trucks.

Come to think of it, the Ram was making a buzzing sound when it began failing.

You do not know if that ABS is located on the front left do you?

 

[ks03]

All I was looking for here was if the T\C could cause the car to not move after a traffic stop.

I’ve seen AWD Denali and Escalades have this, but not t/c affecting a non awd vehicle when it’s taking off. Those vehicles would also have braking issues and wheel speed sensor dtcs. They wouldn’t just stay still though, they would rev a little, and creep or surge along until you could get it over about 5mph

 

[glmoore0001]

I’ve seen AWD Denali and Escalades have this, but not t/c affecting a non awd vehicle when it’s taking off. Those vehicles would also have braking issues and wheel speed sensor dtcs. They wouldn’t just stay still though, they would rev a little, and creep or surge along until you could get it over about 5mph

I have no movement at all and no faults. I am thinking now I have two separate issues. ABS and Throttle. Maybe another ground somewhere. I think I should start looking at the ABS now.

 

[swathdiver]

I may have a guy that has a capable scanner. I had a similar situation on my Ram 2500 and had to replace some very expensive wheel bearings that were causing me to loose my power brakes. Pretty common problem on those trucks.

Come to think of it, the Ram was making a buzzing sound when it began failing.

You do not know if that ABS is located on the front left do you?

I believe it's (ABS Pump) in front of the fuel tank on the driver's side. Happen to live in Florida?

 

[glmoore0001]

I believe it's (ABS Pump) in front of the fuel tank on the driver's side. Happen to live in Florida?

No Sir, Northern Illinois near the Wisconsin Border.. Road salt capitol of the world..

 

[afpj]

Here's a WAG, the front wheel noise on take off, traction control turning it off helps, could it be just a hub and ABS sensor?

 

[afpj]

in researching my own dead pedal. ive found theres two grounds on the frame under the driver seat, and another one iirc near the rad support, d/s, they get rusty and quick working. you can try a clean up of them contacts. and ive also seen the tb cause this. bad pig tail from one of the sensors.

you could scan it for codes too, see what you come up with.

i use this app. scans everything https://play.google.com/store/apps/...d2.chevroletsys.chevroletsysscanfree&hl=en_US
just need a odb2 bluetooth reader, 10-20 bucks for that.

Is that Chevy app better than torque?

 

[glmoore0001]

Here's a WAG, the front wheel noise on take off, traction control turning it off helps, could it be just a hub and ABS sensor?

That is what I am leaning towards for that part of my issues (I am also having issues of no forward motion from a dead stop). I guess to check if you have a bad sensor you can stop the car, take off slow and the car will turn to the opposite direction of the bad sensor wheel. So, if the car turns left, the right sensor is bad. If they are both bad, the test does not help.

 

[OR VietVet]

To check for a bad wheel bearing/hub assembly you drive it straight and then you turn from 12 to 2 to load the left front bearing and you turn from 12 to 10 to load the right front bearing. When you load them, because the front weight will push pressure to the opposite side from where you are turning, you will hear a rubbing/grinding/squealing/rattle/etc. noise instead of the normal silence.

 

[glmoore0001]

I have never tried to drive slow from a stop. This time, I stopped in the middle of the street and gave the car gas. Immediately I received a "traction control active" notice on the odometer and the car started turning left. If you go by what Erik says in the "South Main Auto" video below says, that means my right side Wheel Speed Sensor is bad.

You guys probably know about this but just in case.. Rust builds up under the sensor, pushes the sensor away from the tone ring and causes a fault. The solution (if the sensor is not rusted beyond reuse) is to remove the sensor, clean the mounting pad and the sensor itself and reinstall. It figures that I would have the sports car in the garage up on the (recalled) Harbor Freight 6 ton jack stands right now and have no place to work on the Tahoe. It looks like the Tahoe is going to the garage.

And by the way, if you have any Harbor Freight jack stands, 3 models have been recalled and you need to return them and not get under the vehicle until you do.
https://www.usatoday.com/story/money/2020/05/20/harbor-freight-jack-stands-recall-2020/5227291002/

 

[Scottydoggs]

Is that Chevy app better than torque?

as far as reading abs and U codes as well as p codes. the chevrosys app is better, but for scanning i use the t app still, you know for on the fly scans. i got a hptuners that does great scans, but it also fails to read abs codes. so i revert back to the chevrosys free scanner. i was actually amazed how well it worked for a free app.

 

[Cbncanada]

I also have this problem on occasion with my 06 Yukon xl. It is related to traction control. The sound you hear is the same one that happens when traction control kicks in. It comes from the brake controller mounted under the vehicle below the driver. Mine only happens once in a while at a stop sign. It only last for about a second then releases. It is not much but definitely enough to notice the holding back of truck movement. I have not yet bothered to track it down.

 

[glmoore0001]

I also have this problem on occasion with my 06 Yukon xl. It is related to traction control. The sound you hear is the same one that happens when traction control kicks in. It comes from the brake controller mounted under the vehicle below the driver. Mine only happens once in a while at a stop sign. It only last for about a second then releases. It is not much but definitely enough to notice the holding back of truck movement. I have not yet bothered to track it down.

Did you notice if the rpms rose and fell with the pedal while it was not moving?

 

[GreyYukonXL]

I pulled up to a stop sign today, I let off the brake, pushed on the gas and the Tahoe does not move.

No problems at any other time of operation. It may have something to do with the traction control and it doesn't happen very often. I BELIEVE that today I turned of the traction control and then the vehicle moved without problems. I was sitting at a 4 way stop though and was more concerned about the lines of cars on all 4 corners than paying attention to why it went away.

The same thing happened last winter a couple times and I wrote it off to ice, no ice today..
I have had a whirring\grinding noise in the front left for some time, only happening from a dead stop (every time) to about 5mph, the sound then goes away. I get a vibration then it almost sounds like some kind of actuator moving, a noise something like a power window motor would sound.

The sound happens every time you move from 0 mph, the lack of movement about once a month.

Tranny fluid is fine and I just repaired a leak in a power steering hose, but this hesitation \ lack of movement has been going on for a year or so now.

Any ideas for me?
2006 Tahoe ZR1

Could be a speed sensor in the transmission going bad. Do you have it in "2wd" or "auto" on the 4x4 selector? If it's in auto, it could also be a sensor going bad in one of the wheels that tells it that it's slipping, which would make it divert power to a different wheel instead.

 

[glmoore0001]

Could be a speed sensor in the transmission going bad. Do you have it in "2wd" or "auto" on the 4x4 selector? If it's in auto, it could also be a sensor going bad in one of the wheels that tells it that it's slipping, which would make it divert power to a different wheel instead.

I had problems with the grounds in the 4wd, but that was resolved. My problem was while in 2wd and I never used Auto 4wd. I always selected 2 or 4. I have determined I have a problem with the speed sensor on the right wheel, but have not had the opportunity to fix it yet.

 

[afpj]

I Didn't see where you put how many miles you got on the rig, but a 2006 I'm guessing over 100,000 easy, replace the two front hubs and be done with it.

 

[glmoore0001]

Yes sir. That is the wise decision.

 

[select127]

Had issue with my 04 Tahoe. Come to stop light, go to take off and rpms would go up but truck wouldn't move. Always assumed it was tranny going bad. Ended up wrecking truck before trying to fix.