Need help, 2021 Tahoe high country will not start.

[Smileyguy1]

I am at a loss, went to change the oil in my 2021 Tahoe high country With the 6.2.. backed it out of the driveway let it warm up for about five minutes. Drained the oil changed the filter refilled the oil. And it will absolutely not start. it won’t even turn over. So I pulled the battery went to get it tested. They say it passed brought it back installed it. I decided I was going to jump it just to make sure it had enough juice and it does absolutely nothing. All I get is a clicking sound , I can hear the fuel pump load up, all the dash lights come on everything else comes on But the engine will not turn over. Can’t get it into neutral… I’m at a loss, I put a code reader on it. It has zero codes… I disconnected the battery and let it sit for 20 minutes, I jumped out the terminals.. honestly don’t know what else to do I have never had an issue with this car at all so I am completely lost so any input or directions you could give me would be greatly appreciated.

 

[Rick Fazz]

Oops, stuff happens.

Might have bumped a wire near the starter. Does the battery voltage drop when turning the key to start? it should. If not then the starter is not being loaded up.
Then I think go to the starter relay does it click when the key is turned to start? If not swap it with another one of the same type.

 

[Smileyguy1]

Oops, stuff happens.

Might have bumped a wire near the starter. Does the battery voltage drop when turning the key to start? it should. If not then the starter is not being loaded up.
Then I think go to the starter relay does it click when the key is turned to start? If not swap it with another one of the same type.

I did check the wiring by the starter and it seems fine. Definitely clicks but that’s all I get.

 

[blanchard7684]

I am at a loss, went to change the oil in my 2021 Tahoe high country With the 6.2.. backed it out of the driveway let it warm up for about five minutes. Drained the oil changed the filter refilled the oil. And it will absolutely not start. it won’t even turn over. So I pulled the battery went to get it tested. They say it passed brought it back installed it. I decided I was going to jump it just to make sure it had enough juice and it does absolutely nothing. All I get is a clicking sound , I can hear the fuel pump load up, all the dash lights come on everything else comes on But the engine will not turn over. Can’t get it into neutral… I’m at a loss, I put a code reader on it. It has zero codes… I disconnected the battery and let it sit for 20 minutes, I jumped out the terminals.. honestly don’t know what else to do I have never had an issue with this car at all so I am completely lost so any input or directions you could give me would be greatly appreciated.

Put a breaker bar on crank pulley to see if you can even budge the engine.

 

[Smileyguy1]

Put a breaker bar on crank pulley to see if you can even budge the engine.

I will try that and I hope it moves

 

[Smileyguy1]

It moves, I’m at a loss

 

[viven44]

Bad starter relay ? Maybe pull the relay and test it with a multimeter ?

Apply the following to the Terminals
86 - 12V battery
85 - Ground

Test for resistance between terminal 87 and 30

Also, do you still have any warranty left ?

 

[blanchard7684]

Next is to get a test light and see if you are getting power to starter

 

[Silverado4x4]

One thing to try is get a hammer and tap on the starter not to hard then try to start it. Back in the day when a starter was going bad wrapping on it with a hammers it would get it to start, if it starts then the starter is bad,. It happens.

 

[viven44]

Can’t get it into neutral

Assuming you are in park ? If you are not in park or neutral the starter will not crank as there is a neutral safety mechanism.

 

[Smileyguy1]

Assuming you are in park ? If you are not in park or neutral the starter will not crank as there is a neutral safety mechanism.

Yes park for sure

 

[Smileyguy1]

One thing to try is get a hammer and tap on the starter not to hard then try to start it. Back in the day when a starter was going bad wrapping on it with a hammers it would get it to start, if it starts then the starter is bad,. It happens.

I’ll give it a shot, used to do that on my square body

 

[Smileyguy1]

Bad starter relay ? Maybe pull the relay and test it with a multimeter ?

Apply the following to the Terminals
86 - 12V battery
85 - Ground

Test for resistance between terminal 87 and 30

Also, do you still have any warranty left ?

No warranty on this, bought it used. I’m not super versed on using one but I have a buddy who is.

 

[dkad260]

While you were changing the oil, did you have the radio on, anything to pull the battery down? I know you said it checked out, but just curious.

The clicking you are hearing, is it the starter solenoid clicking, or just a faint click of a relay?

Do you have any signs of rodents, like leaves or acorns?

I've had starters go bad in the driveway . No hints whatsoever of it going bad then out of nowhere I was very lucky to have it happen at the house.

What do the battery terminals look like? Any corrosion that could hinder current flow?

 

[Smileyguy1]

While you were changing the oil, did you have the radio on, anything to pull the battery down? I know you said it checked out, but just curious.

The clicking you are hearing, is it the starter solenoid clicking, or just a faint click of a relay?

Do you have any signs of rodents, like leaves or acorns?

I've had starters go bad in the driveway . No hints whatsoever of it going bad then out of nowhere I was very lucky to have it happen at the house.

What do the battery terminals look like? Any corrosion that could hinder current flow?

No rodents, no corrosion on the cables, it’s a pretty decent click but perhaps could just be the relay

 

[viven44]

Where is the click sound coming from ? Under the vehicle, if so, it's the starter solenoid that's mounted on the starter itself.

If/when that solenoid clicks that can point to a couple of problems
- Poor ground or power - check battery terminals and make sure they are tight
- Bad starter - try the whack test as suggested above

 

[Smileyguy1]

Where is the click sound coming from ? Under the vehicle, if so, it's the starter solenoid that's mounted on the starter itself.

If/when that solenoid clicks that can point to a couple of problems
- Poor ground or power - check battery terminals and make sure they are tight
- Bad starter - try the whack test as suggested above

Definitely underneath.. it’s raining like crazy right now but I will try the whack test as soon as it stops

 

[Seapro]

Definitely underneath.. it’s raining like crazy right now but I will try the whack test as soon as it stops

Don't know if your Tahoe has remote start if so you should check the remote start relay in the fuse box. My Yukon did the same thing way back when.

 

[blanchard7684]

any updates on this?

 

[Smileyguy1]

UPDATE: I tried all these things with zero luck, got it towed to the dealer today. They just got back to me, engine is seized .. they are covering it under the massive 6.2L recall, will be several weeks before we get it back.