so ive had this code come up like 3 months ago and i just erased it and never showed up untill last week again same code says thermostat below tempature? have any of you ran into this code before? things on the internet say its from the fan being on a lot?

 

how many miles? might need to replace the stat

 

155,000km thats what i was thinking going to replace thermostat and go from there

 

mines went out at about 90k-miles

 

so all it did was toss same code?

 

how involved is the thermostat replacement?

 

on lsj its located behind the motor on the drivers side by the header. "only three bolts". but to get to one is a lil difficult.

 

im assuming you're gonna need something to catch the coolant once you get to the 3 bolts?

 

Yea, it'll come pouring out. Then just refill through the coolant tank.

 

good times...mine is throwing the same code so I should be replacing it soon

 

If it's like most gm's it is worth changing the thermostat sooner rather than later. If the engine doesn't get up to temp it never goes into closed loop and will use more gas