Speedometer, kilometer and miles, miles odometer, positive bias

Years 2000–02 Models 2 Factory citations 5

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Also documented for Chevrolet Oldsmobile

Documented applications

Jimmy — second generation (1995–2001)

2000, 2001 Factory-verified

2001 list omits positive bias

GM factory document — 2000 gmc jimmy 4wd rpo code list, p.1.
GM factory document — 2001 gmc jimmy 4wd rpo code list, p.1.

Sonoma — second generation (1994–2004)

2000–2002 Factory-verified

2001 list omits positive bias. The 2002 list reads as the 2001 list.

GM factory document — 2000 gmc sonoma pickup 4wd rpo code list, p.1.
GM factory document — 2001 gmc sonoma pickup 4wd rpo code list, p.1.
GM factory document — 2002 gmc sonoma pickup 4wd rpo code list, p.1.

This page aggregates every documented appearance of UC4 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.