O/T... Allan NE/Other GM techs

bradk · May 30, 2008

Anyone have an older ('88-90) Chev or GMC speedo calibration chip for back of instrument cluster? Ya know,the ones you plug into the cluster after changing tire size.You break off certain pins per a formula.I think they were used 3 years if memory serves.

Replacing a cluster assy for a guy.Used one came from a 4X4 and is goin' in a 2 wheeler.Part # no good at the General.Used my last one from the kit 'bout 10 years ago. Email open.

Thanks!!

JDemaris · May 30, 2008

You can buy a universal conversion chip to fix it. Costs around $60 though.

Allan in NE · May 30, 2008

Wasn't allowed to do that when I was turning wrenches. Something about it being against the law to tamper with any speed-o-meter whatsoever.

Every repair had to authorized, certified and stamped by a qualified/authorized service outlet.

We sent ours along with all the necessary paperwork to Downtown Radio in Denver. Usually took three days via UPS overnite.

Allan

Bob · May 30, 2008

Try the link below:
DRAC

Ron in Nebr · May 30, 2008

The stuff you need is available. Do a search on the chevy off road forums, or just google or yahoo search for "speedometer calibration" and I bet something shows up that you can use. It's real common to have to do that when guys put bigger tires on the 4x4 pickups.

bradk · May 31, 2008

Thanks guys!!

~brad

O/T... Allan NE/Other GM techs

bradk

Well-known Member

JDemaris

Well-known Member

Allan in NE

Well-known Member

Bob

Well-known Member

Ron in Nebr

Member

bradk

Well-known Member

Similar threads