K 2500 Truck 4WD V6-262 4.3L (1988)
condition of the pin. A 0 means the pin is present on the clip. A 1 means the pin is not present at that location on the clip. Continue towards the
rectangular end writing down the corresponding number to the right of the previous number. When finished, you should have a seven digit code of
0's and 1's. If the code matches the code from step 5, replace the Instrument Cluster. If the code does not match, go to step 8.
8. According to the code from step 5, remove the corresponding pins of a new Program- 'fling Clip part number 25084374. A 0 in the code means
that the pin stays. A 1 in the code means that the pin is removed. With the rectangular end up, install the new Programming Clip on the back of the
cluster.
Sample Calculation
The following information is an EXAMPLE ONLY of the Programming Clip Test procedure.
1. The distance is measured from the center of either rear wheel to the ground and found to be 15 inches, so R=15.
2. The axle ratio is found to be 2.73, so A=2.73.
Pulse Per Mile Calculation (Example)
3. The number of pulses per mile is calculated (see illustration).
Divide Ratio Calculation (Example)
4. The divide ratio is calculated (see illustration).
5. In Table 1, 0.573529 is not present. The next largest number on the table is 0.578125. The correct code is therefore 0001110, so the pins at
terminals 4, 3, and 2 must be removed.
