Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
Hello! My name is Gary.Welcome to JustAnswer.I'm reviewing your question now, and will post back with a reply shortly.
P0172, P0175 are rich both banks.
U0121 is lost communication with ABS.
Any mods above what HSV does?
Are the codes current or history?
Does it start normally?
How often does this car get driven?
Can you look at STFT and LTFT data, and post some figures here?
VE has issues with low battery faults, which log codes straight after startup.
How old is the fuel?
The P0101 is a MAF code.
Is the MAF secure, no leaks between the throttle body and the airbox?
The ABS codes are set in the PCM, or the ABS module?
Have you washed the engine bay recently, could be water entry at the ABS connector.
You need use up that fuel and get some fresh stuff in there, preferably 98.
Do you need any further help?
I hope my advice has been of assistance to you.