Thread: gxp speedo problem

ok, thats what i meant by reprogram my 5 button DIC. now i just need access to one for that and the speedo lol

so all i need to do is just get the vin re-learned and my speedo problem will be fixed?

It's an actual reprogram from SPS using a tech2 or MDI. It will teach it the vin number, options, etc.

If that doesn't for some reason fix it there might be a problem with the cluster itself.
I have seen different pin outs as well from different years


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Originally Posted by rperry435

It's an actual reprogram from SPS using a tech2 or MDI. It will teach it the vin number, options, etc.

If that doesn't for some reason fix it there might be a problem with the cluster itself.
I have seen different pin outs as well from different years


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You are going to have to help me with this language lol. Whats SPS? I will hopefully get this figured out tomorrow before I go back to school. Thanks

Perry you seem to have the knowhow and access to the tool.. where in MI are you? provided its not outrages priced id pay to have ya hook me up, i need my BCM done for the HVAC upgrade to heated seats, DIC reprogram to correct milage, and speedo... hell anything to open up my BCM id be happy lol

I'm located in Saginaw.

You can't unlock a bcm. Sometimes you can program options or configuration but rarely . dic and speedo aren't a problem.Hvac would be a separate module that would be flashed/programmed..

I can't remember ever seeing hvac on the list for a gp. Perhaps the wiring harness itself is physically different on cars with heated seats. I could look.

Definitely an update for the pcm on our cars but if you tune with hpt or anything else the update would be pointless.

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Originally Posted by Classy Pontiac

You are going to have to help me with this language lol. Whats SPS? I will hopefully get this figured out tomorrow before I go back to school. Thanks

Service Programming System. It cost over $1k/yr for the subscription.


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ive seen it referenced many times here

http://sm.gpona.com:9001/si/showPubS...316&name=Seats

Alright I still have not came up the solution to fix my speedo. I tried using a tech2...couldnt figure it out...GRRR these lights are starting to bother me! haha

Damn I know what ur problem is

And what would that problem be? lol

well for one if i remember correctly gxp speedo goes up higher in speeds...and for two its made for a v8 so you would probably need a tuner for it

Ya i know that, I just dont understand how to get the tech 2 to reprogram the speedo..

Hmmmmm

I'm sure there's a way but have u considered just peeling off the Gxp overlay and putting it on the stocker

I was honestly thinking of that today, but 80% of the reason I changed was because it went to 160. I have my original speedo apart at the moment trying to figure out which relay triggers or checks for abs/trac/brake. If there even is one lol

if he peeled off the overlay and put it on the normal one his speedometer would be really off probably by about 10 miles per hour

Originally Posted by Fivefingerdeathpunch

To my knowledge the cluster on the 04+ are just plug and play.

This. I swapped mine no issues.

Originally Posted by REDCOMPG

This. I swapped mine no issues.

Did u go from a non gxp or comp g one to a gxp or comp g one? Or vis versa

Comp g to GXP.

Pretty sure the comp g one is the same as every other non GXP one