How do you all get 6.2s to 300K miles

[Will L.]

Swapping out the sensor is no biggie. It will leak some coolant when you do it, so just get the old one loosened up, then have the new one close so when you pull the old one out you can quickly install the new one.
Top off coolant and bleed out the air afterwards. Good to go.

I would suggest getting a Delco sensor from an authorized dealer like Oriellys, napa, etc though instead of ebay. There are so many poor quality parts that fail much sooner out there, saving $5 isn’t worth it.

 

[jrsavoie]

Swapping out the sensor is no biggie. It will leak some coolant when you do it, so just get the old one loosened up, then have the new one close so when you pull the old one out you can quickly install the new one.
Top off coolant and bleed out the air afterwards. Good to go.

I would suggest getting a Delco sensor from an authorized dealer like Oriellys, napa, etc though instead of ebay. There are so many poor quality parts that fail much sooner out there, saving $5 isn’t worth it.

Try to get the new sensor started, before you drop it and have to crawl under the truck to get it while the coolant is draining overhead - actually this is the way I do it. I don't think it is the preferred method

 

[nycxjeremyy]

Swapping out the sensor is no biggie. It will leak some coolant when you do it, so just get the old one loosened up, then have the new one close so when you pull the old one out you can quickly install the new one.
Top off coolant and bleed out the air afterwards. Good to go.

I would suggest getting a Delco sensor from an authorized dealer like Oriellys, napa, etc though instead of ebay. There are so many poor quality parts that fail much sooner out there, saving $5 isn’t worth it.

Sir, the sensor is fine, its just the cable that connects to it is damaged due it being partially melted

 

[dbrannon79]

is your cold advance and the idle up solenoid connected in series to the coolant sensor? not saying it is the problem but those idle up solenoids draw a bit of amperage and could be drawing too much (getting old and going bad) if this is the case, it can burn out the sensor in the coolant crossover too. I always like to run a relay on things like this to avoid burning out a sensor that is hard to obtain on top of drawing too much on the factory wiring.

you can splice a relay into the wire coming out of the sensor going to the cold advance and idle up solenoid and power the relay off the battery. that would isolate the load on the sensor and stop the melty things. but this would not fix it if it's drawing too much. IDK what they ohm out at when good, someone would have to put an ohm meter on their good one and then compare to yours to see if that is indeed the problem.

The relay mod will only save your sensor. that thing new is up around $80 by it's self and iirc NLA from GM. there are a few aftermarket ones available.