My chevy surburban (2000) has code PO154, PO135, PO155, and PO0000 could you tell me what they are. Mechanic's Assistant chat Customer: My chevy surburban (2000) has code PO154, PO135, PO155, and PO0000 could you tell me what they are.

GM Mechanic: Gary ok this is an intermitant code being set as its passing the test right now.since the O2 is new there is more than likey a wiring problem from the PCM to that O2 sensor ,a connector porblem,bad terminal,terminal loose contact.if that wiring and connections are good then it would leave the PCM is more than likey the problem

GM Mark of Excellence/ Service Guild Participant with 13 years experience, ASE Master Certified 2,106 Satisfied Customers 2004 Silverado with 4.8L showing PO135.

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Customer: Had code po135 when check engine light came on.Scan tool said 02 sensor bank 1 sensor 1. Got new one and swapped out,reset light,went about 40 miles light came back on.Now it says po133? Got new one and swapped out,reset light,went about 40 miles light came back on.Now it says po133?

GM Grand Master Technician 2007. 14 years experience. 32,709 Satisfied Customers I have a2005 gmc truck 5.3. it is running rough at idel but runs fine at load. dtc codes were o2 sensor, misfire on bank

I have a 04 chevy impala ls, v6 3.8 liter automatic. there are 4 codes i need to fix. po134, poo36, po140, po141, po135. Mechanic's Assistant chat Customer: hi there i have a 04 chevy impala ls, v6 3.8 liter automatic. there are 4 codes i need to fix. po134, poo36, po140, po141, po135. thanks so …

First, let's do the po171 po174 po135 po141 po155 and po161. When these codes are all set together, the most common problem associated with these is going to be a fault in the MAF Sensor. Before condemning the MAF, let's run an intake air leak test, just to be sure.

Customer: Working on a 2004 envoy with a 5.3 getting a code PO135 changed both upstream oxygen sensors but the code still sets after 2 days always. Checked the wiring and connectors all no problems found.

I'm having issues p0300, p0134,po135,p0154,p0155,p0161,p0332 where should I start. No but I have replace spark plugs and Chevy P0154 and P0134 Code: Troubleshooting and Solutions