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Randall C
Randall C, ASE Master Tech
Category: Chevy
Satisfied Customers: 12803
Experience:  ASE Master, L1, 32 years, Diagnostic / Electrical Specialist
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Need the location hot oxygen 2004 Silverado 5.3 liter JA:

Customer Question

need the location for the hot oxygen 2004 Silverado 5.3 liter
JA: What is the model of your '04 Chevy?
Customer: 1500 silverado
JA: When was your last tune up?
Customer: with in the last month, plugs and wires. filter. have code p0135
JA: How many miles are on the car? How has your mileage been lately?
Customer: 209385, normal
JA: Are you hoping to fix this yourself?
Customer: yes have the hot oxygen sensor but not sure of its location
JA: What have you tried so far? OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Chevy Mechanic about your situation and then connect you two.
Submitted: 1 year ago.
Category: Chevy
Expert:  Randall C replied 1 year ago.
Hello, All 4 sensors are heated o2 sensors., This code does NOT mean nor specify a certain one, It only means one of them is or has failed. Well in most cases. There is no way possible for me to say which of the 4 is the bad one. tests have to be done or, some customers just change all 4 as really, they are all the same age and will need changing at some point. I wish I could zero in on the bad one but that just is not possible, I have included 2 links. One is very detailed about the code and test, the other is location
Customer: replied 1 year ago.
Thanks that's what I was afraid off did find four on the lower exhaust.
Expert:  Randall C replied 1 year ago.
there are 4. they all are heated. You can run some of the basic tests from the chart I sent you, you can skip some scnner steps. I would supply more info if possible