2003 Gmc Sierra B&m Shift Plus

[pj5454302]

I have a B&M Shift plus electronic shift improver on my truck and it isnt supposed to work on vehicles later than 98. I have a friend with a 2003 GMC Sierra and he is looking for somthing to firm up his shifts, So I suggested the shift plus. On B&M's website it says that it wont work for his truck, But seeing as my truck and his have the same transmission would like to think if I find the right wires to tap into I could make it work.

 

So heres my question, Has anybody made shift plus work on a nbs chevy/gmc truck? If so can you tell me what wires you tapped into?

[Stevens03]

I used one on my 01 S10.. .and it worked great. I remember the wire being a light blue with white stripe and maybe a red with black stripe.

 

Not sure about anything newer, but it worked great on my S10.

[pj5454302]

I used one on my 01 S10.. .and it worked great. I remember the wire being a light blue with white stripe and maybe a red with black stripe.

 

Not sure about anything newer, but it worked great on my S10.

 

Same here, Love it on my jimmy so trying to figure out how to wire it up on my friends truck.

[Stevens03]

S10forum.com might have the answer you need.

[pj5454302]

S10forum.com might have the answer you need.

 

 

Well i was going to post on there but since his truck is a fullsize, figured I would post on here.

[MikeNH]

It won't work, there is a difference in electronics that will prevent it. Why not just run it in tow/haul mode if he's looking to firm up shifts?

[thecraft]

It won't work, there is a difference in electronics that will prevent it.

Agreed, it might be the same transmission, but the electronics have certainly changed over the years.

 

I would instead consider using Corvette or billet shift servos to firm up the shifts, they are not expensive and not very hard to install, even for a transmission novice.

 

Or better yet, you could get a custom tune to firm the shifts too.