No Part Throttle or Delayed Downshifts. GMC Truck Sonoma Pickup

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 1997 🢒 Sonoma Pickup - 4WD 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L60-E 🢒 No Part Throttle or Delayed Downshifts

Checks

Causes

Input Housing Assembly (621)

•	3-4 Apply ring stuck in applied position

•	Forward clutch not releasing

•	Turbine shaft seals missing, cut or damaged

Manual Valve Link (89)

Disconnected

Valve Body Assembly (60)

•	2-3 Shift valve stuck

•	Manual linkage not adjusted

•	Spacer plate and gaskets incorrect, mispositioned or damaged

•	Lo overrun valve stuck

•	Orificed cup plug restricted, missing or damaged

Reverse Input Clutch Assembly (606-614)

•	Clutch plate worn

•	Reverse input housing and drum assembly cracked at weld

•	Clutch plate retaining ring out of groove

•	Return spring assembly retaining ring out of groove

•	Seals cut or damaged

•	Restricted apply passage

•	Porosity in piston

•	Belleville plate installed incorrectly

•	Excessive clutch plate travel

•	Oversized housing

Lo and Reverse Clutch (694-696)

•	Clutch plates worn

•	Porosity in piston

•	Seals damaged

•	Return spring assembly retaining ring mispositioned

•	Restricted apply passage