f-body-half my gauges dont work

[the_jester]

i know this isnt about trucks but maybe someone here still might habe a sugestion. i just finished installing my cam tr224. and bbk headers with off road y-pipe and slp catback. well right away the traction control quite working and my abs inop light came on. then today while driving down the road all of a sudden my tach quite and temp gauge and fuel gauge. and service vehicle light came on . everything all at once. i still have the speedo, alt gauge and oil pressure. they flick back on every once in a while but just for a few seconds. and a little light flicks on saying check gauges

[RedHeartbeat]

did you break a ground wire from the engine or frame to the body?

[the_jester]

did you break a ground wire from the engine or frame to the body?

I'll check tomorrow, i just went out and checked the dtc's then cleared them with my scanmaster, they were o2 sensor codes, as can be expected with ORY.
and the gauges were all working but it still said service vehicle and service engine soon. and still abs inop and ASR

[GasGuzzler]

I agree with a ground issue.

[boss13]

GM has a Class action lawsuit going on about the gauges.What year is your truck.Mine is 2003 and my speedo did the same things urs did.There is a guy on ebay who fixes it for about $130 u just mail him your stuff and he has a quick turnaround only a few days.