Brake booster, 260 mm, tandem, high flow

Years 1998–04 Models 2 Factory citations 14

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Also documented for GMC Oldsmobile

Documented applications

Blazer — S-10 second generation (1995–2005)

1998–2004 Factory-verified

2001 list reads 240 mm

GM factory document — 1998 chevrolet blazer 4wd rpo code list, p.1.
GM factory document — 1999 chevrolet blazer 4wd rpo code list, p.1.
GM factory document — 2000 chevrolet blazer 4wd rpo code list, p.1.
GM factory document — 2001 chevrolet blazer 4wd rpo code list, p.1.
GM factory document — 2002 chevrolet blazer 4wd rpo code list, p.1.
GM factory document — 2003 chevrolet blazer 4wd rpo code list, p.1.
GM factory document — 2004 chevrolet blazer 4wd rpo code list, p.1.

S-10 pickup — Second generation (1994–2004)

1998–2004 Factory-verified

2001 list reads 240 mm. The 2002–2004 lists read as the 2001 list.

GM factory document — 1998 chevrolet s10 pickup 4wd rpo code list, p.1.
GM factory document — 1999 chevrolet s10 pickup 4wd rpo code list, p.1.
GM factory document — 2000 chevrolet s10 pickup 4wd rpo code list, p.1.
GM factory document — 2001 chevrolet s10 pickup 4wd rpo code list, p.1.
GM factory document — 2002 chevrolet s10 pickup 4wd rpo code list, p.1.
GM factory document — 2003 chevrolet s10 pickup 4wd rpo code list, p.1.
GM factory document — 2004 chevrolet s10 pickup 4wd rpo code list, p.1.

This page aggregates every documented appearance of JM3 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.