Today's vehicles use computers to monitor the functions of the vehicle. The 2002 Tahoe's computer receives and stores trouble codes that, when read, will help you pinpoint the exact malfunction. After having the codes read and the vehicle serviced or repaired, you will need to reset the codes. If you don't want to spend the money on an OBD-II scan tool, you can make the adjustment from home using and adjustable wrench.
Things You'll Need
- Adjustable wrench
- Ignition key
Park the vehicle and turn off the ignition. Pop up and secure the vehicle's hood and find the battery.
Loosen the nut on the negative battery cable with the adjustable wrench. The negative cable is black and marked with a "-" sign. Slip the clamp off of the negative battery terminal and do not to let it touch anything metal, especially the positive battery terminal.
Wait 30 minutes while the Tahoe's computer resets.
Put the negative battery cable back in place and tighten the nut with the adjustable wrench.
Put the key into the ignition and start the vehicle's engine. Verify all warning and service lights have shut off. Drive the vehicle. It will take a few trips for the computer to reset and get in sync with all of the vehicle's functions.
Tips & Warnings
- You will have to reset the radio presets, the clock and the alarm system as the computer reset erases memory settings.
- "2002 CHEVROLET TAHOE 4.8L 294cid V8 FI (V) OHV"; Chilton; 2002
- Photo Credit Ben Bloom/Stockbyte/Getty Images
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