Coolant Gauge Not Working (Help)

[03-GMC]

Ok so here is the deal, I have been trying to convince the old man to let me put a small tune on his truck for the past year. Today he finally gave in and said lets do it. Took me a minute to get the tune to take and we take it for a test drive. On the drive he noticed to gauge wasn't working Pretty much I am getting the blame for it now.

So we take it back to the garage and I turned the key to the run position, the gauge slowly start bouncing up to temp with sort of a clicking sound to it. Now the gauge is stuck at the 200 mark with the truck off. Please help, he is pretty much fuming out in the garage pacing back and forth. Yep I am pretty sure I will never touch his truck again.

This very well could be my last post ..... nah just kidding about that part, but i could really use some feedback, whether it was done by me loading in the tune or it was just happened to fail at the same time.

 

[03-GMC]

Oh by the way it's the same truck as mine except stock.

 

[maxaholic]

I bet it's the stepper motor and that it has been bad and he finally noticed it after you made a change. Check it with efi and see if the sensor is working.

 

[03-GMC]

I bet it's the stepper motor and that it has been bad and he finally noticed it after you made a change. Check it with efi and see if the sensor is working.

Just log the coolant temp and see if it reads the temp? So is there a way I could have caused the stepper motor to go out? The first thing I thought is I blew a fuse, then then the stepper motor.

 

[paint94979]

Just log the coolant temp and see if it reads the temp? So is there a way I could have caused the stepper motor to go out? The first thing I thought is I blew a fuse, then then the stepper motor.

na it is most likely a coincidence...

 

[03-GMC]

na it is most likely a coincidence...

Yeah I was thinking the same thing. I have flashed mine so many times I cant remember. Oh well though, we will see what comes of it.

 

[duratothemax]

stepper motor went bad. Just a coincedence that it happened at the same time.

The coolant temp signal (like almost all of the other guage info/readings) gets to the cluster over the data bus; theres no coolant temp signal wire going to the cluster or anything.

ben

 

[03-GMC]

stepper motor went bad. Just a coincedence that it happened at the same time.

The coolant temp signal (like almost all of the other guage info/readings) gets to the cluster over the data bus; theres no coolant temp signal wire going to the cluster or anything.

ben

I have no clue what a data bus is.

So can the stepper motor be replace for just the coolant gauge? Right now with the truck off the gauges sits at 200* then goes to about 230* when the ignition is turned on.

 

[03-GMC]

Well I think he is calmed down now after I had the GF ran and got him his favorite whiskey. He still blames me though

 

[paint94979]

Well I think he is calmed down now after I had the GF ran and got him his favorite whiskey. He still blames me though

LOL it is just a stepper motor, i'd replace all of them... IIRC its like 50$ for new motors, if you can solder you might be able to do it yourself

 

[03-GMC]

LOL it is just a stepper motor, i'd replace all of them... IIRC its like 50$ for new motors, if you can solder you might be able to do it yourself

Nope I cant solder, but I have a good friends that can solder. My dad is real hot headed at time, I'm just glad I am not like that, I pretty much just laugh it off. Shit happens

 

[paint94979]

Nope I cant solder, but I have a good friends that can solder. My dad is real hot headed at time, I'm just glad I am not like that, I pretty much just laugh it off. Shit happens

He can still drive the truck LOL... my tach reads 1000rpm at WOT LOL

 

[03-GMC]

He can still drive the truck LOL... my tach reads 1000rpm at WOT LOL

Haha yeah, mine doesnt show what gear it's in. I deal with it

 

[PhilsLB7]

The stepper motors are real easy to replace. You can't put them in wrong. I also agree since you are already in there, go ahead and replace all of them. The clicking noise you were hearing was probably the gears in the stepper motor. Good luck!

 

[03-GMC]

The stepper motors are real easy to replace. You can't put them in wrong. I also agree since you are already in there, go ahead and replace all of them. The clicking noise you were hearing was probably the gears in the stepper motor. Good luck!

I will tell him he should replace them all but I doubt he will fix something that isn't broke.

 

[PhilsLB7]

I will tell him he should replace them all but I doubt he will fix something that isn't broke.

I can understand that. However, I would go ahead and order all the stepper motors so you will have them when ever you need them.

 

[03-GMC]

I can understand that. However, I would go ahead and order all the stepper motors so you will have them when ever you need them.

Just curious where would I get the stepper motors from?