blkfleet73

Hello Chevy drivers,
i have a issue and i hope someone here can help me out. got the dreaded service air bag message on the dash, scanned the codes came back front impact sensors bad. i went ahead and replaced both sensors with plug and play sensors from rockauto "dorman" brand. Scanned the truck after install was complete and i got new codes B00083/84 which means left and right sensor "component incorrectly installed" dont see how that is possible, since its practically impossible to plug these sensors incorrectly. according to the rockauto info page these sensors do not require any reprogramming, simple plug and play. so can anyone please guide me to a solution to this problem? besides not having the full protection of the truck i truly hate seeing any indicators on my dash. thanks in advance for any help in this matter

tech2

model year, engine ?

blkfleet73

08' Tahoe 5.3l , sorry about that...lol

tech2

the sensors are plug and play.

was this vehicle in a crash that deployed the air bags? sdm modules must be replaced after deployment.

did you have codes for both sides with the old sensors? If just one side...plug both old ones back in. clear the codes and see which code resets. Swap the oem sensors to the other side, clear the codes and see if the codes follow the sensor. If they do the new sensors are nfg… you have confirmed the wiring and sdm module are ok. replace the one bad sensor with factory sensors.

blkfleet73

The truck was never in an accident, bags have never been deployed. the fault light just came on one day and it said impact sensors was faulty. i watched a video on youtube where this guy said if you run your finger across the face (side facing vehicle front) and you feel a big crease then the sensor is bad due to it freezing up and forcing it to crack and what not. well i did the touching the face test and one of my sensors had a big time crease in it and the other not so much, well i figured i just change booth sensors to be peace at mind, and thats when i tried to clear the code and it came back with something along the lines of new components improperly installed. then i tried to clear and reread the codes and that when it kicked out a B00083 and B00084, dont remember if thats the exact code but i do know it began with a "B" and ended with "83 and 84" cant recall how many zeros in the middle but it means "left and right" sensor bad.
is there a way to test the old sensors with a multimeter like checking for a "open" to see if its bad or not this way i can narrow down if both old sensors were bad or just that one with the crease down the middle?

tech2

to my knowledge there is no test for the sensor itself. If you have one old sensor that works do what I said

blkfleet73

i sure will give it a go, thanks for the tip, Tech2

blkfleet73

btw where is the SDM module located at?

tech2

i'd have to look it up...usually they are centered in the vehicle ie under the driver seat or center console.

blkfleet73

yeah i will look it up, but i am pretty sure i have never touched that thing....lol
and like i said vehicle never been in an accident where the bags had to deploy. but as soon as this weather clears up and i can make it to the auto hobby shop i will do the what you suggested to see if we can narrow this issue down to a fix. thanks again!