Tire, front, LT225/70R19.5F BW R/ST ST TL HWY

Years 1998–00 Models 3 Factory citations 7

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Also documented for Cadillac Chevrolet

Documented applications

Sierra — GMT400 (1988–2000)

1998–2000 Factory-verified

GM prints 225/70R9.5F; YTN and ZTN read LT225/70R19.5; the 1999–2000 lists end TWY, the 1998 list HWY like YTN and ZTN

GM factory document — 1998 gmc gmc c pickup 2wd rpo code list, p.1.
GM factory document — 1999 gmc gmc c pickup 2wd rpo code list, p.1.
GM factory document — 2000 gmc gmc c pickup 2wd rpo code list, p.1.

Suburban — GMT400 (1992–1999)

1998–1999 Factory-verified

GM prints 225/70R9.5F; YTN and ZTN read LT225/70R19.5; the 1999 list prints TWY, the 1998 list HWY

GM factory document — 1998 gmc gmc suburban 2wd rpo code list, p.1.
GM factory document — 1999 gmc gmc suburban 2wd rpo code list, p.1.

Yukon — GMT400 (1992–1999)

1998–1999 Factory-verified

GM prints 225/70R9.5F; YTN and ZTN read LT225/70R19.5; the 1999 list prints TWY, the 1998 list HWY like YTN and ZTN

GM factory document — 1998 gmc yukon 2wd rpo code list, p.1.
GM factory document — 1999 gmc yukon 2wd rpo code list, p.1.

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