1997 Chevy Tahoe O2 sensors

1997 CHEVROLET TAHOE
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LABONE32
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Electrical problem
1997 Chevy Tahoe V8 Four Wheel Drive Automatic

thank you for your time!
i recently scanned my 97 chevy tahoe with a DTC handheld and recieved codes P0154, P0155 AND P1135..... so i ended up changing all four of my O2 sensors but i STILL recieve the same DTC codes on my hand held. even after turning the vehicle off and restarting it numberous times, and also even after driving the vehicle a few times the computer STILL has not cleared. its been a couple days now and i cant figure out what else it could be. ive read through my manual three times now. can you help?
May 8, 2009 at 4:39 PM
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