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Jim Grant Tech Tips Jim Grant Tech Tips
A collection of helpful articles based on reader submissions
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  Jim Grant's Tech TipsJim Grant's Tech Tips
Below is a collection of Jim Grant's Tech Tips sorted by Vehicle Make. These Tech Tips were answers to questions submitted to Jim by ALLDATAdiy.com users over the course of many years.
If you have any questions, please feel free to email us.
 
 

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  Jim Grant's Tech Tips

'97 Chevy Tahoe, Resetting "Service Engine Soon" Light

Q: How do you clear or reset the Service Engine Soon Light on a ’97 Chevy Tahoe?

- Charles C.

A: There are three ways to clear or reset the Service Engine Soon light in your vehicle as well as most others. 1; with a computer scan tool. The software in the scan tool allows for turning the Service Engine Soon light off. While you’re having that performed, have the technician record the code/reason for the warning light being on, there may be a system problem that needs to be addressed. 2; disconnect the battery. Disconnecting the battery causes the computer to lose all its memory. The only problem there is you will not know why the warning light was on. 3; drive the vehicle. The warning light comes on if there is a system problem or if the key was in the on position and a computer sensor was disconnected. Just about every time you start the engine and drive your vehicle, the computer runs a series of system tests, this is called a drive cycle. Before the computer will turn off the warning light the vehicle and computer have to go through 3 drive cycles. If the computer has determined that there is not a system problem after 3 drive cycles of testing the light will be turned off. After about 50 drive cycles the computer will remove/delete the code that it stored. If after 3 or 4 days of driving the service engine soon light has not turned off then you may very well have a problem that needs to be addressed.

 
     
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