If you do eventually have to lemon law it it's going to help that you document everything accurately. The requirements vary from state to state.
Better to know them now and be prepared than be scrambling a month from now when you've finally had enough and are exasperated.

 

Well, my brand new Stingray with 40 miles on it is sitting in the shop. Today is day 4, and still no word on what the problem is. I've been told that if the ECT sensor needs to be replaced, it sits between the engine and the firewall which requires the engine to be dropped to access. A google search tells me that estimated shop hours to remove and replace the engine is in excess of 20 hours, plus time to replace the sensor and drain and replace fluids.
Guess who's not happy.

 

you will get a call that its fixed soon i bet

 

I got a call today, it is the ECT sensor, it does require dropping the engine, and they now estimate it will be ready in about 8 days. Parts should arrive on Monday and the rest of the week to actually do the replacement.

I guess I'd be okay with that if it's done on time, and my Corvette is like nothing ever happened when I get it back.

 

IF mine was out of warranty and IF i didn't have to go through a fuel tank........that firewall is gonna get an access panel lol

 

I'd like to meet the G.M. engineer who thought it'd be a good idea to put the ECT sensor in a place that requires dropping the engine to access it.

 

self employed 30 years + in the auto repair and towing......they used to drive [pun] us nuts on somethings

 

Wow... engine out.
Reminds me of a Ferrari 355 that required engine out for "everything".
I read above R&I C8 engine 20 hours; I recall F355 was 8 hours.

I would be interested in the method/ ease of removing a C8 vs F355 engine.

 

According to the procedure in the Service Manual I have (attached), not only must the engine be removed, but the oil tank must be removed from the engine to access the sensor apparently.

The attached procedure for the sensor replacement is a mere 1 page and looks sooo simple. Except for that deceptively innocuous preliminary procedure "Engine Oil Tank Replacement". And, the very first step in the Engine OIl Tank Replacement procedure says Engine-Remove.

Just three simple steps : 1. Remove the Engine. 2. Remove the Oil Tank. 3. Replace the sensor. Then just put it all back together.

 

Its actually in the normal place on the engine. The mid-engine configuration and placement of the oil tank apparently makes it difficult to reach. I wonder if there was another place on the engine that would have been accessible?

 

where is the water pump on these motors ?

 

 

reminds me of a 62 caddy water pump and the water manifolds on them lol .....wadda CF

 

While the 348/355 is designed to be dropped regularly, the going rate is 20 hours (close to C8 hours). General rule is every 5 years for major service and with normal replacement parts, $8-10,000. Don't ask me how I know.

 

I was wondering the same thing. It seems to me like the sensor could be placed anywhere on the engine that is exposed to the flow of the coolant.

 

This is exactly what the dealer described to me. Approx 20 hours to R&R the engine, and a couple of more to R&R the oil tank and drain and replace the fluids.

 

Happened on my 25 too. Was a coolant sensor. Had to take it in as they would not shut off.

 

ah the GM world of electric stuff ......while my c6 z was trouble free my c5 had its share of sending units etc troubles 4 way flasher button, oil sending unit , HVAC blend doors , gas gauge , entry/exit memory and more .

 

This is my 4th Corvette, I've never had a problem of any kind until now, and even though it's a small problem, the placement of the sensor is ridiculous. Having to drop the engine to service a sensor is just crazy. 20 + hours labor to change out a sensor that is a 20 minute job is nuts.

 

Earlier I said its located in the "normal place". But that was ambiguous - since normal is subject to interpretation. Its located on water pump, just above what is called the water pump outlet pipe that is pushing water to the engine oil cooler. I think I mentioned before there could be one more if you have Z51, and a third one if you have the overseas V09 option. But I think the one of interest here is the one on the water pump.

So...in a earlier conventional engine, vintage engine like the Chevy 283, the temperature sensor is located in the water jacket on the cast iron intake manifold on top of the engine. It would be nice if they could have mounted the temperature sensor on the C8 intake plenum, but unfortunately they can't. The intake plenum for the C8 Stingray is plastic (or composite actually). I don't think there is a water jacket there - looking at images in the Service Manual I don't see evidence of that. So, the temperature sensor can't to there. Instead they put it on water pump, which might have been accessible, except the oil tank completely covers it. The engine obviously has a water jacket, but I'm not sure where they could have put it that would be accessible without removal of the engine. The other two sensors, when they are present, are in the coolant lines and I think are accessible without engine removal.