Operation CHARM: Car repair manuals for everyone.
Home >> GMC >> 1999 >> Safari Van AWD V6-4.3L VIN W >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Scan Tool Testing and Procedures >> Scan Tool Data, Normal Values and Definitions >> Scan Tool Data Definitions - Powertrain Systems >> TCC Duty Cycle
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

TCC Duty Cycle

Range 0 - 100%
The scan tool indicates the duty cycle that the VCM has commanded to control the TCC solenoid. The TCC solenoid is pulse width modulated to provide a determined amount of pressure, which is displayed as a percentage of the supply pressure. This provides for smooth TCC engagement.
pro multis · About Operation CHARM