the ses light came on in my 96 4door blazer today. so i went down to murrays pulledthe codes and came up with 3. the first is p0147 wich is o2 heater (bank 1 senser 3). the other 2 are p0700 trans control system malfunction. the other is p1100 and i have no idea what it is for. any help with these codes would be great! thanks i appreciate it!

 

P0147 -- Heater Circuit B1S3 (post-cat O2 sensor) - use the troubleshooting steps found in the P0135 - HO2S Heater Circuit Bank 1 Sensor 1 thread to diagnose. You could also switch the B1S2 & B1S3 sensors (pre & post cat respectively) and see if the code changes.

P0700 is a generic code... Are you sure there were no other P07xx codes?

P1100 -- Mass Air Flow sensor circuit intermittent - I would inspect the wiring to the MAF sensor which is located in the intake duct between the throttle body and the air filter housing.

 

no those are the only codes. thank you will inspect the wiring and maf. i have a new o2 senser in the garge. probably goingto swap them out tomorrow. thank you!