I have the abs and break light combo. I've noticed it does not always come on, but sometimes it's on right away and other times I drive for a bit and then it turns on. Just wondering if it would most likely be the ground issue due to the inconsistency of the light activation. Does anyone have a photo of the location of this ground so I know what to check?

Codes:
c0265
c0245
c0241
c0246
c0242
c0251

I also have a b0077 code. I think it's the driver side front airbag sensor. Anyone know what could be going on with that? It just turned on one day and has never gone away. What would I look for and where is this sensor?

The other day I also broke my blinker multi switch. Is there a writeup on replacing it? I've searched but haven't found anything.

Any help would be appreciated. I can't afford professional fixes right now and I need my truck safe and reliable.

Thank you.

 

The ground is on the frame body mount bracket under the drivers door near the front fender.
C0265--Faulty EBCM or ground
C0256--EBCM
B0077-----
Vehicle Application:
2001 Chevrolet Silverado 2500 HD 6.0L, GAS, Vin U
Customer Concern:
The air bag lamp is on steady. Sensing Diagnostic Module (SDM) code: B0077.
Tests/Procedures:
1. Check C103, 6 pin connector at the front of the Underhood Bussed Electrical Center (UBEC).

2. Look at the Yellow wire, pin A and the Black/White wire, pin B for corrosion or loose fit.

3. Check same two wires at the Electronic Frontal Sensor (EFS), behind the front bumper.

4. If the wires appear OK, check next at the SDM, under the driver's seat.

5. If corroded at the SDM, replace the SDM, corroded terminals and find source of water.

6. If OK at the SDM, test the two EFS wires from the SDM to the EFS, Yellow, pin A11 and Black/White, pin A12.

7. Make sure that the wires are not open or grounded.

8. If above OK, replace the EFS, road test.
Potential Causes:
High Resistance Connector C103
Failed Electronic Frontal Sensor (EFS)
Corroded Frontal Crash Sensor Wiring
Malfunctioning Sensing Diagnostic Module (SDM)

The multi function switch can be replaced without removing the steering wheel with a special torx tool from Snap On.

 

It's probably some corrosion around the abs sensor where it mounts into the hubunit. The is a TSB from GM about this. Happens alot. Trust me....I've done mine twice in 2 years.