2007 hummer h3 input speed sensor location

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Vehicle Install Locations: Input

You enjoy taking care of your H3.

When your Hummer H3 left the factory, it was destined for a person with discerning taste who wants rugged good looks in their automobile. Obviously, you didn't buy your H3 unless you knew that you wanted road hugging weight and adventurous drive both impeccably combined into one car, truck, or SUV. It's not a regular occurrence that you realize that you have to buy a replacement Transmission Shaft Speed Sensor to repair your car or truck. Your Hummer dealership isn't the only place to buy the best repair parts to fix your H3.

Why Transmission Shaft Speed Sensor replacement is so important.

Because your Hummer H3 has an automatic transmission, it uses a variety of sensors and control modules so it can operate at its full potential. The transmission shaft speed sensor is one of those devices. This part installs on the surface of the automatic transmission input or output shaft housing, and it measures the rotational speed of small gears affixed to those shafts by using an electromagnetic coil. After your engine control module receives this data, it is changed to pulses and signals that your speedometer, odometer, or transmission controller uses. A faulty Hummer H3 transmission speed sensor will cause all sorts of problems until it is replaced.

The best auto parts .

When your Hummer needs the best replacement Transmission Shaft Speed Sensor, there's no need to trust any store other than the authority, Car Parts Discount. Buy all the car parts you will ever need from carpartsdiscount.com and save time and money on all your upcoming repairs. Given all the trouble that can be involved with repairing damage to your car or truck, let www.carpartsdiscount.com be the number one store you go to make buying it easy. Need 2010, 2009, 2008, 2007 Hummer H3 Transmission Shaft Speed Sensor parts? We've got them right here.

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2007 Hummer H3

Asked by  storms  in Mountainville, NY on  February 16, 2011

how do you change the input speed sensor on a 2007 hummer h3?

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P0717 is a somewhat rare OBD2 trouble code that can occur in the Hummer H3.  While it illuminates the check engine light, the code warns of a transmission-related error, specifically that the input shaft/turbine speed sensor is not sending a signal.

P0717 is a generic code (it has the same meaning for any vehicle made for the 1996 model year and up).

P0717 Definition:  Input/Turbine Speed Sensor – “A” Circuit No Signal

Here is the meaning of P0717 broken down by its two main parts.

Input/Turbine Speed Sensor

Your H3’s input/turbine speed sensor measures the speed of the input shaft.  It does this by using a reluctor wheel and magnets (magnets go on the sensor tip)

The reluctor wheel will have notches cut into it.  As the input shaft turns, the input/turbine speed sensor can tell each time one of these notches passes it. 

It relays this data to your H3’s PCM/TCM, which determines input shaft speed.  At this point, the PCM compares this data to engine RPM, the output shaft speed sensor, and the vehicle’s speed.

The input speed sensor is usually screwed into or bolted onto the transmission.  It’ll be close to the bellhousing since it measures how fast the torque converter is spinning.

“A” Circuit No Signal

With P0717, there is no voltage coming from the input/turbine speed sensor.  If the loss of voltage were intermittent, P0715 would be the code.

P0717 Symptoms:  Hummer H3

Here are the most common symptoms associated with P0717 in the Hummer H3:

• Torque converter not locking
• Transmission enters limp mode
• The speedometer doesn’t function properly
• Hard shifting
• The transmission doesn’t shift at the normal RPM

Depending on the transmission in question, the symptoms can range from inconvenient to undrivable.

The good news is with P0717 there aren’t a lot of common causes, and the fix is usually pretty straightforward.  Here’s how to go about diagnosing this code in your H3:

1. Check the Wiring Harness (Likely)

The wiring harness is going to be where you would want to start looking for P0717’s causes.  Check for damaged wiring, particularly where the harness plugs into the input/turbine speed sensor.

Do the pins look corrosion-free?  They may need cleaning to make good contact.  Use an electrical contact cleaner.  

Verify that the ground is solid.  If there doesn’t look to be any visible damage, you can verify the voltage with a voltmeter.  

Repair the wiring harness as needed.

2. Input Speed Sensor (Very Likely)

Now that you have verified that the wiring going to the input/turbine speed sensor is functioning, it’s likely that the sensor itself is malfunctioning and causing P0717 in your H3. 

If you pull the sensor, verify that there are no metal shavings on its magnetic tip.  If there are, that can be enough to disrupt the signal.  You can try cleaning the shavings off and seeing if the sensor begins to function again.

Use a voltmeter to test voltage going in and out of the sensor.  Otherwise, you may end up replacing a sensor that is still working fine.

Pull this sensor when the transmission is cool to avoid getting burning hot ATF on yourself.

3. PCM (Not Very Likely)

It’s possible that the PCM can be at fault.  Only suspect it if the sensor and wiring appeared to be just fine.  Verify that there are no technical service bulletins relating to the PCM from Hummer.

Conclusion

While it’s hard to drive your Hummer H3 with P0717, fixing it is relatively straightforward.  Good luck!

Where is the input turbine speed sensor located?

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What is input speed sensor?

How do I fix code P0716?