No Engine Braking in Manual Ranges. Pontiac Grand Prix 2007

For 1990-2009 cars only

Makes 🢒 Pontiac 🢒 2007 🢒 Grand Prix 🢒 Transmission/Transaxle 🢒 Automatic Transaxle - 4T65-E 🢒 No Engine Braking in Manual Ranges

No Engine Braking in Manual Ranges Touch Activated Power

Checks

Cause

DEFINITION: A large engine RPM increase and forward vehicle speed decrease do not immediately occur when the transmission is shifted from Drive to manual ranges or a coast condition occurs in any manual range.

Accumulator and Manual 2-1 Band Servo Assembly

•	A loose or damaged manual 2-1 band servo oil pipe (125)

•	Loose manual 2-1 band servo cover or accumulator cover bolts (103, 131)

•	A damaged accumulator cover spacer plate assembly (134)

•	A damaged or missing servo piston seal (107) or a servo piston cylinder O-ring seal (113)

•	A missing servo exhaust screen assembly (115), allowing debris into the cylinder

•	A misassembled manual 2-1 servo assembly (103-115)

Manual 2-1 Band Assembly

•	A band assembly (680) that is worn or burned

•	A band assembly (680) that is disengaged from the anchor pin (102)

•	A band anchor pin (102) that is loose or missing

Low Regulator Valve

Valve stuck or missing spring

1-2 Shift Solenoid

Valve stuck OFF