Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Front

Rotor Thickness:





Brake Systems:





GM brake systems are identified by Regular Production Option (RPO) codes. For further information on RPO codes see Application and ID at the overall vehicle level.

JB5 Power Brakes, Disc/Drum, 6400 LBS.
JB6 Power Brakes, Disc/Drum, 7200 LBS.
JB7 Power Brakes, Disc/Drum, 8400 LBS.
JB8 Power Brakes, Disc/Drum, 10,000 LBS.
JD5 Dual Power Brakes, Disc/Drum, 6400 LBS.
JD6 Hydraulic Power Brakes, Disc/Drum, 7200 LBS.
JD7 Hydraulic Power Brakes, Disc/Drum, 8400 LBS.
JF9 Hydraulic Power Brakes, 4 Wheel Discs