i went to the local auto parts store and got my codes read.....

Diag. Trouble codes

Current Code 13
Left Oxygen Censor
Error Bank 2


Current Code 37
Brake on


Current Code 37
Brake On


ok i need some help translating this....im very new to this computer stuff....

when i went to the store my SES light was on....then when i checked the codes it wasnt....when i left and drive a little ways it came back on.... im so confused.... cana nyone help me and tell me my problem...... i think it means one of my 02 censors is bad..... and those brake ones i have no idea....maybe i had my foot on the brake and dont recall it....??? any help would be greatly appreciated..... God i feel like a newb but hey no ? is a stupid ?

 

When they checked the codes they most likely reset them as well, that would explain why it wasn't on after you left. As for the rest, I'm still trying to figure it out as well for the right bank. Do a search in the LT1 forum, Shoebox posted a reply to me that I can't seem to remember now...I hate getting old!

 

so whats the problems with my car.... one of the 02 censors? and thats it?

 

One thing that was suggested to me was to remove both sensors and switch them. If the car then shows the code for the opposite sensor you know it's the sensor. If it still shows the same side then it must be something else, like maybe a loose connection.

Depending on the mileage on the car, there may be something to cause the sensor to go bad too. (If the car only has 40,000 miles the sensor shouldn't be bad yet) In that case, check for exhaust leaks or a rich condition that could be leading to the sensor wires burning or carbonizing.

Hope this helps, if not ask shoebox, he knows all.

[EDIT]I'm really not observant, I missed the mileage being in your sig. With 95k miles it's very possible the sensor is just worn out

 

you need better diagnostics. with limited knowledge i would get it checked out by a reputable shop and replaced with quality parts(no autozone and advance) use a/c delco parts. the cost of throwing parts could be more than getting it fixed right. you could have a vacuum leak,weak fuel pump,bad o2 couple different things

 

the o2 code is left side circuit problem(most likely o2) it is staying at a preset voltage for to long after startup, most likely the heater circuit is bad or wire is melted on headers, \
the code 37 points to a tcc torque converter clutch problem, you need a scan tool to watch the tcc pids. the quick way is cruise down the road at 60 mph and watch the rpms, if you stay cruising and (lightly) hit the brakes the rpm should increase 200-300 rpm and when you let off the brakes the rpm should lower down or feel like a light shift down 200-300 rpm. this will tell you if the converter is applying. a GOOD diag shop will tell you for sure

 

thx

 

From Shoebox's code list specific to the LT1's:

http://shbox.com/1/Dtcs.htm

DTC 13 = Bank 1 (left) Heated Oxygen Sensor (HO2S) Circuit (open circuit)

An open circuit will put the PCM's O2 sensor reading at ~450mV. You need to check and see it that is the problem. If it is, its either the sensor itself being burned out (not the heater circuit - there's a separate code for that), or the wiring is faulty. Switching the left and right sensors side-to-side will tell you whether its a sensor problem (code switches to DTC 63), or if its a wiring problem (code stays at DTC 13).

DTC 37 = Brake switch stuck "ON"

That one is self-explanatory..... has nothing to do with the TCC

Use Shoebox's list, not some generic code list.

 

thx injuneer

 

sorry for the misinformation going off old repair manuals that must be outdated. this is some info from gm from my shop computer.

code 13 open o2 sensor circuit

note: 5.7 (vin p) engine is equipped with 2 o2s. code will set if the left o2 sensor circuit is open. code 63 will set for right o2. on some models o2s use a heating element . heaters are not pcm controlled


codes will set if codes 21 or 22 are not set, engine at operating temp,o2 sensor voltage is consatant within a specified range for a predetermined range(.35-.55 volts), tps is greater than idle, a precalibrated time has elapsed since startup and all conditions have existed foir a precalibrated amount of time. most likely cuases are: open sensor signal(high) circuit, faulty pcm connection, faulty o2 sensor connection or faulty 02

diagnostic aids, pcm will not go into closed loop if code is set, code may set if vehicle runs out of fuel or stalls while vehicle is in motion. if 02 sensor ground becomes loose, a false 02 reading will occur, this will result in a code 13 being set. on models equipped with heated 02s elements, element resistance should be 3.5 - 14.0 ohms

again sorry for the misinfo

 

code 37 tcc brake switch error

pcm monitors activity of the normally closed brake switch. switch opens when pedal is depressed.

diagnostic aids: code 37 can be caused by a misadjusted brake switch or a poor connection. code may also be set by unusual driving habits (i.e. stop and go expressway driving)

hope this helps. this is gm info