2006 LS V8 Seized?

Bigeric23

New LVC Member
Joined
Jul 19, 2021
Messages
7
Reaction score
0
Location
NYC
So I bought the LS for my son in May, 88K on the odometer, clean carfax. Had it inspected, no leaks, no issues. A month later the power steering starts to make a groaning sound. We replaced the PS pump, a week later, the noise came back. Notice the PS fluid level was low, and there is a leak coming from the PS boot (I assume the rack needed to be replaced). Then my son takes it for a spin, with the PS leaking and he hears a rattling sound coming from the engine. He pulls over, and sees these 2 notifications on the dash.. Now the car will not start. Lights come on, makes a clicking sound, but will not crank. Had it towed to a local mechanic, who fears the engine has seized.. Is this the end?

Also, we had a leak in the sunroof, water dripping into the cabin? Maybe the engine is hydrolocked?


end?
IMG_20210719_201234.jpeg
IMG_20210719_201240.jpeg
 

Bigeric23

New LVC Member
Joined
Jul 19, 2021
Messages
7
Reaction score
0
Location
NYC
So I bought the LS for my son in May, 88K on the odometer, clean carfax. Had it inspected, no leaks, no issues. A month later the power steering starts to make a groaning sound. We replaced the PS pump, a week later, the noise came back. Notice the PS fluid level was low, and there is a leak coming from the PS boot (I assume the rack needed to be replaced). Then my son takes it for a spin, with the PS leaking and he hears a rattling sound coming from the engine. He pulls over, and sees these 2 notifications on the dash.. Now the car will not start. Lights come on, makes a clicking sound, but will not crank. Had it towed to a local mechanic, who fears the engine has seized.. Is this the end?

Also, we had a leak in the sunroof, water dripping into the cabin? Maybe the engine is hydrolocked?


end? View attachment 828576300 View attachment 828576301


Also.. we checked the oil about a week prior, it was full, a bit over the max, and now we checked, it is very low.. So something must have caused a pretty bad leak very quickly?
 

JustALs

LVC Member
Joined
Jul 13, 2021
Messages
33
Reaction score
3
Location
Canada
I would start by removing plugs and manually turn the crank and check cylinder compression
 

joegr

Dedicated LVC Member
Joined
Dec 10, 2005
Messages
20,807
Reaction score
1,826
Location
Gulfport
So, I assume that the temperature gauge was ignored?
 

Bigeric23

New LVC Member
Joined
Jul 19, 2021
Messages
7
Reaction score
0
Location
NYC
So, I assume that the temperature gauge was ignored?
As soon as he heard the noise and just before he shifted into neutral and turned off the engine, he checked the temp gauge. It was right in the middle (as it should be.) After coasting to a stop at the side of the road, putting the key into the run position revealed, in addition to these two messages, that the temp gauge was maxed and the temp light was on. Just 15-30 seconds prior, the temperature gauge indicated no problems at all. Is this salvagable? Or a total loss? Common issue? We are bumming right now..
 

joegr

Dedicated LVC Member
Joined
Dec 10, 2005
Messages
20,807
Reaction score
1,826
Location
Gulfport
... Is this salvagable? Or a total loss? Common issue? We are bumming right now..
No, not common. You have not provided enough info to know if this is minor or major. A good next step would be to put a socket wrench on the crank bolt and see if you can manually turn the crankshaft clockwise. If you can't, it probably is toast.
 

Bigeric23

New LVC Member
Joined
Jul 19, 2021
Messages
7
Reaction score
0
Location
NYC
ok thanks.. it's currently at the shop, will await their diagnosis and circle back.. wish us luck, and thanks for your help!
 

04_Sport_LS

Dedicated LVC Member
Joined
Jun 12, 2012
Messages
4,547
Reaction score
625
Location
Somewhere around Lake Erie
somehow lost all oil

or overheated to the point it dropped a valve seat


I don't know if I'd go that far yet.

Oil is sacrificial. It's purpose is to clean, cool, seal, and lubricate. Expose it to extreme temps... and it loses those properties.

By reading what happened to the engine... the oil, (especially if non-synthetic), was probably "cooking off" due to the high cylinder temps... and because of that the engine is most likely toast.
 

04_Sport_LS

Dedicated LVC Member
Joined
Jun 12, 2012
Messages
4,547
Reaction score
625
Location
Somewhere around Lake Erie
No, not common. You have not provided enough info to know if this is minor or major. A good next step would be to put a socket wrench on the crank bolt and see if you can manually turn the crankshaft clockwise. If you can't, it probably is toast.

I doubt it will... and most likely is. The steel cylinder liners are also most likely scored... and are loose in the aluminum block.
 

Bigeric23

New LVC Member
Joined
Jul 19, 2021
Messages
7
Reaction score
0
Location
NYC
So, quick update...

Shop could not determine what was wrong, suspects it is seized, but couldn't confirm.
No codes registered on any scan tools... which is surprising.

We have the car back at the house now..added oil to the engine, no leak after 2 days.

Had a mechanic come to the house, who took a look, but didn't have time to try to crank it manually.

Noticed battery is failing, but since there are no codes, and no evidence of metal in the oil, thinks it may not have seized?

The day before it died, we had a lot of rain, and water leaked in the cabin and all down the front pillar..
One theory is that we have a short somewhere?

He recommended I take the battery to AutoZone, and have them charge it, or try a new battery...other than that I think I'm stuck.
 

04_Sport_LS

Dedicated LVC Member
Joined
Jun 12, 2012
Messages
4,547
Reaction score
625
Location
Somewhere around Lake Erie
The day before it died, we had a lot of rain, and water leaked in the cabin and all down the front pillar..
One theory is that we have a short somewhere?

If the sunroof drain came loose, (which they are known to do), on the passenger side of the car... (IIRC) the water will run down to the ECM and potentially fry it.
 

04_Sport_LS

Dedicated LVC Member
Joined
Jun 12, 2012
Messages
4,547
Reaction score
625
Location
Somewhere around Lake Erie
Get the right sized socket and a fairly long ratchet... and put it on the crankshaft pulley bolt (as Joe suggested) and try to turn the crankshaft.

You'll know if it's seized.
 

Bigeric23

New LVC Member
Joined
Jul 19, 2021
Messages
7
Reaction score
0
Location
NYC
Soo....got the battery charged at AutoZone, no good news ...car lights up, but only clicks, no crank.i think she's dead...but noticed water under the hood, (likely from the sunroof leak).any chance this is electrical, not mechanical failure? I'm going to try to hand crank one of these days in the next week or two..but seems like a fair amount of work, which I haven't had time for yet.

20210803_020353.jpg
 

04_Sport_LS

Dedicated LVC Member
Joined
Jun 12, 2012
Messages
4,547
Reaction score
625
Location
Somewhere around Lake Erie
A good next step would be to put a socket wrench on the crank bolt and see if you can manually turn the crankshaft clockwise. If you can't, it probably is toast.

Had a mechanic come to the house, who took a look, but didn't have time to try to crank it manually.

Get the right sized socket and a fairly long ratchet... and put it on the crankshaft pulley bolt (as Joe suggested) and try to turn the crankshaft.

I'm going to try to hand crank one of these days in the next week or two..but seems like a fair amount of work, which I haven't had time for yet.

Might be easiest to crank it over from underneath.
Been mentioned more than once already.
 

Bigeric23

New LVC Member
Joined
Jul 19, 2021
Messages
7
Reaction score
0
Location
NYC
just wanted to share the latest.. no luck..mechanic said they "tried everything". Sold it to a scrapper for $500. What a shame, but wanted to thank you all for your help and insight....best of luck to you all, hope your's fares better than mine!

20210912_160111.jpg


20210912_160052.jpg


20210912_160041.jpg


20210912_160032.jpg


20210912_160030.jpg


20210912_155959.jpg


20210913_124134.jpg
 

Members online

Top