I have code C0281 WHAT IS IT AND HOW DO I FIX THE PROUBLEM

Question edited for clarity. The codes are C-Zero, not C-Oh.

C0281 CHEVROLET - Engine-Codes.com

https://www.engine-codes.com > c0281_chevrolet
'What is C0281 CHEVROLET code meaning? ... The stop lamp switch signal informs the Electronic Brake Control Module (EBCM) when the brake pedal is pressed. The ..

C0222 CHEVROLET Code - Missing Right Front Speed Signal

https://www.engine-codes.com > c0222_chevrolet
'C0222 CHEVROLET code possible causes · Faulty Right Front Speed Sensor · Right Front Speed Sensor harness is open or shorted · Right Front Speed Sensor circuit ...

C0265 Engine Code: EBCM Relay Circuit - Diagnosis & Repair

https://chevytrucks.org > c0265-engine-code-repair
Aug 19, 2020 - On Chevy and GMC vehicles, this engine code is caused by a bad connection at the EBCM ground, which is located inside of the unit itself. If you ...

It sounds like there has to be an issue with the pump/modulator or even the master cylinder. I would try bleeding all 4 wheels first to see if there is any air trapped. If not you need to have the abs pump checked next

A c 0237 is a faulty rear ABS SPEED SENSOR .....the Code C 281 is a faulty BRAKE SWITCH CIRCUIT....Speed sensors can sometimes get out of adjustment or a bad connection which can also trigger the Brake Switch Circuit Code....Inspect all brakes and sensors....Brake fluid level......I can help walk you through troubleshooting the problem......Thanks....

The code is for a faulty shift solenoid. A good transmission shop can give a price to fix this.
If the transmission is shifting differently, you may want to consult a transmission repair shop. They will tell you how much.

Have a qualified brake shop check this out ASAP>

there is no B0281 only a c0281 and that is your abs is malfunctioning because of the brake lamp switch. check connection on switch if it is fine you need a new switch

the c0281 code on a gm truck is the abs ECBM has lost the voltage to it when the brake pedal is not depressed. so if you are going at a speed above 10-15MPH and the ECBM looses the 12 volts to it ,when the brake pedal is NOT depressed ,, then this code gets generated. the brake switch has a 12 volt feed to the abs switch contact connector. the other side of this switch goes to the other connector pin. these switches wear out get dirty with time. replacing the switch or if your up to it take the switch apart and clean the contacts with a fine abrasive material to remove the oxidation. if pitted or worn replace the switch. one wire is brown the other is purple. working the brake pedal watching the volts is easy way to see if the voltage is steady when you wiggle the brake pedal.. driving on a rough road with a bad switch usually gets it acting up.

this is a code table hope it can help you and good luck

go to auto zone ,they can help you get the codes and tell you how to fix them ,its free, hope to help,robert b

3.3 engines has the egr valve with transducer.you have to replace the whole unit. code p0406 what its trying to tell you your egr valve circuit is short to ground.it has failed .