20 Most Recent 2006 GMC Sierra - Page 9 Questions & Answers

Need to replace you thermostat.

there will be different clocks and ways to set them based on your interior trim package, i have consulted an oracle but cannot divine which package you have. so you will have to do it the way everyone else does by reading your owners manual.

Yes, the heater fan does have a fuse. If the fuse isn't blown, there's a sensor in the duct work behind the glove box under the dash that controls the fan speeds that you can check.

I would get the fan motor itself checked out. #5 position is where the current goes straight to the motor, that being burnt out indicates a burnt motor to me, or the resistor is fried. But I think the resistor is either in the motor or the controller, so either way, do check the fan.

Larger than stock tires combined with the fluid being cold could cause this.Low fluid level due to leaks.Try cold climate fluid from gm if it just happend cold and no level problems are present.

GMC suggests that all spark plugs be replaced every 100,000 miles. When removing spark plugs, always remove one spark plug wire at a time to avoid mixing up the wires

I hope this answers your question

Check transmission fliud and filter.

Someone may have added anti leak powder to the cooling system.

There is a recall on the instrument cluster for erratic gauge problems.If you didn`t get a letter then call your dealership and give them your vehicle identification number and ask them if there are any open recalls on it.What they do is type in your V.I.N.to their computer and they will tell you if your truck is involved.The problem is the instrument cluster.The cluster has to be programmed to your V.I.N.when it is replaced.Your V.I.N.has all the information that your vehicle is equipt with.Good luck.

More than likely the evaporator vent valve.

Yes, itspossible that someone fuse/relay stay hot even when the car is turn off. Could you identify excalty what fuse/relay is this? Or need the fuse diagram to do it? Confirm if you want this information (fuse diagram).

Keep in touch.

if only works on high it needs a resistor if it dont work at all it needs a blower motor be sure to check fuse

if you do not hear the blower motor blowing it is possible. If it moves air but isn't cold the it would be in the compressor but if it doesn't move air at all id be inclined to say that yes it is the blower motor.

you need to pull pump and make sure fuel float is not bent or hitting side of tank

Hello. your A/C relay is bad. It is under the dash to the right of the steering column. Replace it and you will be up and running. J.