Efi dsp5

[Bonestock]

Hello all,

I have a dsp5 tune on the lmm and have run into this problem: When only in 2wheel drive the abs brake light comes on. If I am driving slow on icy roads and a tire spins the abs light comes on and warnings go off all over the damn place. I did also notice if I drove it for approximately 100 miles the abs lights and alarms would come on also? I do have 35x12.50x20's and I think my speedo is fairly close. Anyone have any ideas?

 

[Chevmeister]

Search for tire size abs issues. I believe it's like 34.5" and over gets that problem. I can't be positive but a quick search would do it. I would search myself, but I'm on my phone and search doesn't always work on here.

I'm assuming that your tire size is set at 35", you might have to back it off in the speedo correction.

 

[Chevy1925]

x2. Ive found that 34.35 works perfect in my truck. havent had a ABS light come on in over a year. also, have you changed out the factory gears?

 

[Bonestock]

Efi

No, they are the factory 3:73 gears. I am thinking about changing them for some 4:11 gears or lower. How far off is your speedo with the 34.35 setting?

 

[Bonestock]

Efi

Thanks for the info guys!