I installed a new computer, it's been flashed, and I cleared all engine codes, Bur have 1 abs code.

probably do have codes the abs light is a' check engine light'it carries codes most likely problem is an abs sensor failing /failed this also ties bin with your traction control system check hubs --sensors and wiring for failing or damage

Hey...this code sets after maintaing the throttle body...this error is ABS speed sensor related...its an acceleration or deceleration error code...to clear this code... U need a profesdsional scanner to relearn the sensors...its a process called G-zero initialization...!
Am your Digimaster!

can you do me a favor just unplug the abs module lead, and check that part first then get back to me on here. it is very rare that an abs sensor fails. its always down to the wiring plugs. and a car wash will throw the water in the engine bay, not like road water and any seal that are weak or cracked will be the first problem. plus engine dieing is a good sing the abs unit is not working at all. bad part is if the unit is not completely damaged. if the engine starts without the abs plugged in. but will not when its plugged in. can be a problem with the abs control unit board.

Sometimes a computer reset can clear things up. Try disconnecting the battery overnight. When running the car for the first time after, make sure lights and a/c are off for the first 5-10 minutes or so while it idles and relearns the idle fuel mixture. This clears all the learned functions in the computer so it goes back through the relearn functions.

did you erase the code? if code is not cleared it acst same way even if you installed a new sensor.

if not cleared, you can do either using obd2 scanner or you can just try to disconnect (-) of your battery for 15 minutes. it i will relearn every thing after 2 or 3 warm ups, and will start to idle ok.

Most likely a wheel speed sensor, hopefully... The only thing that will change when the ABS light is on is that the ABS will not function as long as the indicator is on. I hope this info helps.

When the airbag system is in functioning condition, the airbag warning light will remain on for about 7 seconds and go out when the ignition switch is set to ON .

If there is any malfunction, the airbag warning light will either stay on or off continuously. In such cases, perform on-board diagnostic in accordance with the specified procedure to determine trouble codes.

1. Turn ignition switch ON (with engine OFF ).

1. Connect DIAG. terminal to No.2 terminal of diagnosis connector located inside lower cover.
2. Check in accordance with the trouble code indicated by the AIRBAG warning light, and record the trouble codes.
3. Turn the ignition switch "OFF " and remove the DIAG. terminal from No.2 terminal of diagnosis connector.

HOW TO READ TROUBLE CODES
The ABS lamp flashes a code corresponding to the faulty parts.

The long segment (1.2 secs on) indicates a "ten", and the short segment (0.3 secs on) indicates a "one".





NOTE: This is the only information provided by the manufacturer for clearing diagnostic trouble codes.




CLEAR MEMORY
After eliminating problem as per trouble code, clear memory as follows:

Make sure ignition switch is ON (and engine off). Connect one DIAG. terminal (1) on diagnosis connector (2) terminal No.1.

where warning light is flashing, connect the other DIAG. terminal (3) on terminal No. 2 for at least three seconds . After memory is cleared, normal warning light flashing rate resumes. (Warning light flashes every 0.6 seconds (ON-OFF operation.) Memory cannot be cleared if any problem exists.

After clear memory and then DIAG. terminals (1) and (3), extract from diagnosis connector (2)

Ignition keys relearn takes about 30 min to do. 30-Minute Learn Procedure 1. Turn ON the ignition, with the engine OFF. 2. Attempt to start the engine, then release the key to ON; the vehicle will not start. 3. Observe the SECURITY tell tale light. After approximately 10 minutes, the light will turn OFF. 4. Turn OFF the ignition switch, and wait 5 seconds. 5. Repeat steps 1 through 4 - two more times - for a total of 3 cycles of 10 minutes. 3x10 = 30 minutes. The vehicle is now ready to relearn the Passlock Sensor Data Code and/or passwords on the next ignition switch turn from OFF to CRANK Important: Turn the Ignition Switch OFF. The vehicle learns the Passlock Sensor Data Code and/or password on the next ignition switch transition from OFF to CRANK. You must turn the ignition OFF before attempting to start the vehicle. 6. Start the engine. The vehicle has now learned the Passlock Sensor Data Code and/or password. 7. With a scan tool, clear any DTCs if needed. History DTCs will self clear after 100 ignition cycles. Without a scan tool you may have momentary starter interruptions while history clears itself.

Ignition keys relearn takes about 30 min to do. 30-Minute Learn Procedure 1. Turn ON the ignition, with the engine OFF. 2. Attempt to start the engine, then release the key to ON; the vehicle will not start. 3. Observe the SECURITY tell tale light. After approximately 10 minutes, the light will turn OFF. 4. Turn OFF the ignition switch, and wait 5 seconds. 5. Repeat steps 1 through 4 - two more times - for a total of 3 cycles of 10 minutes. 3x10 = 30 minutes. The vehicle is now ready to relearn the Passlock Sensor Data Code and/or passwords on the next ignition switch turn from OFF to CRANK Important: Turn the Ignition Switch OFF. The vehicle learns the Passlock Sensor Data Code and/or password on the next ignition switch transition from OFF to CRANK. You must turn the ignition OFF before attempting to start the vehicle. 6. Start the engine. The vehicle has now learned the Passlock Sensor Data Code and/or password. 7. With a scan tool, clear any DTCs if needed. History DTCs will self clear after 100 ignition cycles. Without a scan tool you may have momentary starter interruptions while history clears itself.

the PCM may need to be reprogrammed by a dealer - I would also suggest seeing the dealer for any programming updates for your current PCM for this or similiar problems. I know many people think dealers are rip offs, but how mauch have you wasted at this point ??

You can clear it with a scan tool, or it will clear it self after 3 start up's if the ABS issue has been addressed and will clear from it's history after 100 start up's. The other thing you can do is to clear the ECM for every DTC codes. Place the ignition key to the run position and pull the ECM (Batt) Fuse from the fuse box for 30 sec. Then place it back in, wait 10 seconds and start the Tahoe. THE ENGINE MAY STALL, BUT LET IT. Just start it up again and let idle for 1 min then go for a test drive. The ECM is relearning the whole engine and transmission, if there is any issues the MILL light will come on and the codes will be new. If the light does not come one then there is no DTC codes and the Tahoe is clean like the day it came off the assembly line. Good luck and hope this helps.