my abs and brake warning lights started flickering on and off on me. anyone else had this happen?

 

what tune? It usually has to do with gear swap... did you recently do this?

 

And what do you do to work around this? I reporgrammed a friend's truck over the weekend and adjusted the speedo from the stock 29" tires to his 35s and now the lights have come on.

 

no tune, just stock. gettin a dyno tune tommorow tho

 

they will probably figure it out on the dyno.. but normally.. for those lights to come on it has to do with gear swaps.. have either of your cases had anything to do with that?

and dc_justin, if you just tuned for tire size, are you using hptuners? if so... sometimes when you do that thing where you center the tire size.. for instance 265/75/16 it'll calc the actual size and than the size it enters in automatically is a little off... try to get those two numbers close.. its hard to explain but if you PM me i might be able to help you more... but if its not hptuners than i cant really help you on that.