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chevy truck 2001 1500 5.3L
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01olds Offline
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chevy truck 2001 1500 5.3L
HI i not sure whick catorogy this question might need be posted any my friend has this truck..... were not sure which color wire is the o2 signal wire to connect an EFIE devive...any you guys know....Confused
05-15-2008 03:16 AM
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hogie Offline
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RE: chevy truck 2001 1500 5.3L
01olds Wrote:HI i not sure whick catorogy this question might need be posted any my friend has this truck..... were not sure which color wire is the o2 signal wire to connect an EFIE devive...any you guys know....Confused

That truck has four sensors,the two pre cat sensors you need to use are purple,Unfortunately you will find four ppl wires in the wire harness at the ecm.The easiest way to find the right ones is to unplug the two rear o2 sensors then probe all ppl wires till you find the ones you need.
That,s the way i found them on my truck. Good luck...
05-15-2008 03:45 AM
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01olds Offline
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RE: chevy truck 2001 1500 5.3L
HI... does that mean 2 at enging up stream one each side ? ok well check there...... thanks hogie.........don...
05-15-2008 06:49 AM
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01olds Offline
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RE: chevy truck 2001 1500 5.3L
01olds Wrote:HI... does that mean 2 at enging up stream one each side ? ok well check there...... thanks hogie.........don...
HI am, back at the o2 censor...one at each side ok..... any idea which color in for the signal out out to the computer ......outher than trial errow method.Sad.......might get a manual today need it any way....Wink am back on the truck chevy 5.8L 01 1500 4 wd book says upstream oxygen censor wire one (side is purple) (outher side purple & white)...... to whom it might be of intreast......good luck
(This post was last modified: 05-19-2008 06:30 AM by 01olds.)
05-17-2008 09:46 AM
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colchiro Offline
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Post: #5
RE: chevy truck 2001 1500 5.3L
Don, check out the o2 sensor doc in the docs section for the wire you want.

Rick

Links: Documents / Tuning for Mileage | Toyota Sensors | Autoshop Sensor Tutorials
05-17-2008 10:48 AM
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jgoff Offline
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RE: chevy truck 2001 1500 5.3L
colchiro Wrote:Don, check out the o2 sensor doc in the docs section for the wire you want.

pulled this for my 2002 suburban 5.3. i ma just begining, no expert.

indicates 2 signal wires, have been told high is correct one that the low is a ground reference.

anyone confirm or deny this? high is purple and white it says. the top 2 is where i think they would go. bank 1 sensor 1 bank 1 sensor2
http://content.chiltonsonline.com/conten...010331.pdf
05-27-2008 06:31 AM
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