Wiring harness, light duty, trailer, five wire

Years 1998–01 Models 1 Factory citations 2

Also documented for Chevrolet GMC

Documented applications

Bravada — GMT330 (1996–2001)

1998–2001 Factory-verified

2001 list reads car trailer; 2000 comes from the 2000 list, which prints UB1 in this position with the light-duty trailer wiring-harness wording and has no U89 line

GM factory document — 1998 oldsmobile bravada rpo code list, p.1.
GM factory document — 2001 oldsmobile bravada rpo code list, p.1.

This page aggregates every documented appearance of U89 in the Oldsmobile reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.