Abrupt 2-3 Upshift. Chevrolet Joy 2008

For 1990-2009 cars

Checks | Causes
--- | ---
ATF temperature sensor | Refer to DTC 17 .
Line pressure solenoid | Refer to DTC 48 .
Throttle position sensor | Refer to DTC 54 .
Throttle angle | Throttle angle out of adjustment. Refer to Symptoms - Engine Controls .
Transmission control module (TCM) | Refer to Diagnostic System Check - Automatic Transmission .
High clutch | Burn or wear of the high clutch. Refer to High Clutch Disassemble .
Servo release accumulator | Malfunction of accumulator
Broken or damage oil pump | Seized or broken pump gears
Control valve spool | Control valve spool error
Control valve | Missing steel ball in control valve
A/C signal circuit to TCM | Harsh shift with open A/C signal circuit when A/C is requested ON