2001 Chevy 1500 pickup 4x4.
5.3L v8
Anti lock &red brake light
codes = C0265
work done prior = none on brakes
tech = jk
question = Brake are working fine. Anti lock brake motor is working. I
have a red brake light on plus anti lock light on. Code is CO265. Could you
send Me wiring diagram. All so where is the EBCM relay located. Thanks
JK:
The ABS relay is internal to the Electronic Brake Control Module (EBCM)
and is not replaceable alone. There is a service bulletin to repair a poor
ground wire that may fix this code. If that is not the problem, then some diag
of the EBCM will need to be done to determine if the EBCM is faulty, the
Brake Pressure Modulator Valve (BPMV) is bad, or a wiring problem.


Problem with my = 1999 Chevrolet Silverado Z71
Engine size = 5.7
Repair work done prior = brakes
GM tech = any
question = my 3rd and overdrive just quit today,no noise or sounds. 1st and 2nd seem ok.
Added 1/2 qt fluid but the fluid was in the x marks. It has kicked hard from 1st to 2nd since
it was a couple yrs old but may go months between times. Help if possible, thank you
SF:
Get the computer scanned for codes. If there are any transmission codes
for shift solenoids, would need to diagnose the shift solenoids and wiring.
If no codes, then an internal part inside the transmission had failed and it
would need to come out and be disassembled to find the fault.
Chevrolet Silverado Transmission and Four Wheel Drive Problems