hello everybody i have been away for a while because recently i have garaged my Bravada and was driving my Buick for the summer.

anyway i parked my Bravada in the garage for about 6 months. prior to parking her she was in good working order and no problems.
well fall is set in and the fact we are in the process of moving, i need her. i have visually inspected all the fluids in the TC, the rear end, oil, coolant, brake, and PS. and while there were some leakage everything was at a good level.

i plated and insured the truck again and took her for a drive to re break her back in. doing so i have noticed the SES light come on. when i pulled the codes i was surprised to find 5 codes
P0122
P1133
P0135
the P0135 and P1133 were also stored codes. i cleared everything, took TB off, disassembled and cleaned everything, put a new TPS in which took care of the P0122. now i still get the P1133 code and i just clear it hoping maybe its just an issue from sitting and maybe running her will clean up the H02 (i know its not a permanent fix but i am too busy with moving at the moment), the code just keeps coming back

am i looking at new upstream 02 sensors? i have noticed a gas smell when im driving so makes me think she is running rich, but im not sure if its related or just from sitting which is why im here. any advice from the pros is appreciated

no wires are melted, and no fuses blown. i tried to remove the driver side sensor (i think that the bank 1) and it wont budge. i have used a hammer, a big *** adjustable wrench and it just will not turn

 

anybody??

 

P0135 indicates the heater in your O2 sensor is not functioning properly. P1133 indicates it is not switching rich to lean fast enough. Combined, without doing the troubleshooting procedures, it would make me think bad O2 sensor or open in the wire. If you want to go through the trouble shooting procedures I would recommend you sign up at alldatadiy.com for an online subscription to the TSM for your truck. If not, check the wires for an open real well before you buy a new sensor. You can get a loaner O2 socket from a parts store. If that alone doesn't help (combined with soaking with PB Blast), I'd reach for the blue wrench.

 

thanks for the info unfortunately the last time o cleard the codes they have not returned so IDK what happened i dont have SES anymore