Sales package, comfort and convenience, utility/Suburban feature package

Years 1998–00, 2002–06, 2023–27 Models 6 Factory citations 23

Also described as Package, comfort and convenienceFeatures enhancement packageSLE heated packageComfort and Convenience PackageSales package, comfort and convenience

Also documented for Cadillac Chevrolet

Documented applications

Sierra EV — BT1 (2024–2027)

2026–2027 Factory-verified

includes A7K, KCB, AVK, AVU, N38, UQA, KU9 and A45; 2026: S in 4SC, 4SD; A in 3SC; not offered in 3SB, 5SB, 5SC, 5SD; 2027: S in 4SC, 4SD; A in 3SC; not offered in 3SB, 5SC, 5SD

GM factory document — 2026 gmc sierra ev fleet order guide rpo codes, p.1.
GM factory document — 2026 gmc sierra ev fleet order guide, p.1.
GM factory document — 2027 gmc sierra ev fleet order guide rpo codes, p.1.
GM factory document — 2027 gmc sierra ev fleet order guide, p.1.

Sierra — GMT800 (1999–2007)

1999–2000 Factory-verified

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

Sierra HD — T1XX (2020–2027)

2025–2027 Factory-verified

includes heated driver and passenger seats (KA1) and heated steering wheel (KI3); requires PCQ; SLE: O; Pro, SLT, AT4, AT4X, Denali, Denali Ultimate: not offered

GM factory document — 2025 gmc sierra 2500 hd retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2026 gmc sierra 2500 hd retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2027 gmc sierra 2500 hd retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2025 gmc sierra 2500 hd retail and fleet fleet order guide, p.22.
GM factory document — 2026 gmc sierra 2500 hd retail and fleet fleet order guide, p.20.
GM factory document — 2027 gmc sierra 2500 hd retail and fleet fleet order guide, p.21.

Sierra — T1XX (2019–2026)

2023–2025 Factory-verified

the 2024–2025 lists print heated front seats and a heated steering wheel under the code

GM factory document — 2023 gmc 23 sierra 1500 electrical body builder sm en us 2022oct12, p.16.
GM factory document — 2024 gmc 24 sierra 1500 sm electrical body builder esid 23dec12, p.19.
GM factory document — 2025 gmc my25 sierra 1500 electrical bbm, p.17.

Suburban — GMT400 (1992–1999)

1998–1999 Factory-verified

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 — GMT800 (2000–2006)

2000, 2002–2006 Factory-verified

the 2000 list words it as a features enhancement package

GM factory document — 2000 gmc yukon 2wd rpo code list, p.1.
GM factory document — 2002 gmc yukon 2wd rpo code list, p.1.
GM factory document — 2003 gmc yukon 2wd rpo code list, p.1.
GM factory document — 2004 gmc yukon 2wd rpo code list, p.1.
GM factory document — 2005 gmc yukon 2wd rpo code list, p.1.
GM factory document — 2006 gmc yukon 2wd rpo code list, p.1.

This page aggregates every documented appearance of ZM9 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.