2000SIERRA

iTrader: (2)

I recently installed the 4.56s in my truck and reprogramed everything with HPTuners. After driving for about a mile or two the parking brake and ABS lights come on and stay on till I shut the truck off. I plugged the laptop in and ran the scanner when the lights came on and it didn't read any codes, since it didn't read the codes I can't figure out what they are to turn them off. Before I bought the HPT software I had a hypertech with 4.88s. I had the hypertech set to 4.56s ( max it would allow ) and even with the computer reading 4.56 but the truck having 4.88 I had no lights. I would think that the HPTuners would allow me to turn off the lights since it is a far more advanced program than hypertech. Is there something I am doing wrong?? Thanks in advance for the help.

TurboBerserker

iTrader: (1)

AFAIK the only light that HPT has control of is the SES light. The parking brake light and the ABS light... Did you check the ABS fuse? Only thing I can think of.

2000SIERRA

iTrader: (2)

AFAIK??? not sure what that is...

all the fuses are fine, I thought that it may be something stupid like that too but it isn't always on, only after driving a bit. So since HPT only has control over the SES light I can't do anything about the abs?

hog

AFAIK-As Far As I Know

dewmanshu

iTrader: (4)

Those lights usually intel something with your ABS computer (card). I am not sure, but isn't that a seperate reporting system...meaning it can be read from a shop snap on diagnostic, but we (HPT)can't see abs codes. The ABS just sends messages to the PCM on traction issues. Check the forums on HPT...there are a few threads on abs there.

2000SIERRA

iTrader: (2)

Thats what I was thinking, but wanted to be sure. What concerns me is, I could use the snap-on scanner to turn the light off, but since I didn't actually fix anything, won't it come back on after I restart the truck each time??