Hello and welcome to Just answer.com, Super mechanic here. About your vehicle.
There has been a service bulletin for that type of concern. Here is what it states.
TECHNICAL
Bulletin No.: 08-07-30-027
Date: June 04, 2008
with 4L60, 4L60E, 4L65E or 4L70E Automatic Transmission (RPOs MD8, M30, M32, M33 or M70)
Condition
Some customers may comment that the vehicle has no movement when the transmission is shifted to DRIVE or THIRD position, but there is normal operation when it is shifted to SECOND, FIRST or REVERSE position.
Cause
This condition may be caused by a damaged forward sprag assembly (642).
Correction
When inspecting the sprag, it is important to test the sprag for proper operation by holding the outer race (644) with one hand while rotating the input sun gear (640) with the other hand. The sun gear should rotate only in the counterclockwise direction with the input sun gear facing upward. If the sprag rotates in both directions or will not rotate in either direction, the sprag elements should be inspected by removing one of the sprag assembly retaining rings (643). Refer to SI Unit Repair section for forward clutch sprag disassembly procedures.
If the sprag is found to be damaged, make repairs to the transmission as necessary. A new forward roller clutch sprag assembly is now available from GMSPO.
If clutch debris is found, it is also very important to inspect the Pressure Control (PC) solenoid valve (377) fluid screens. Clean or replace the PC solenoid (377) as necessary. It is also important to flush and flow check the transmission oil cooler using J45096. Refer to SI Automatic Transmission Oil Cooler Flushing and Flow Test for the procedure.
The notches above each sprag must point up as shown when assembled into the outer race.
Bearing Assembly, Input Sun Gear
Snap Ring, Overrun Clutch Hub Retaining
Hub, Overrun Clutch
Wear Plate, Sprag Assembly
Retainer and Race Assembly, Sprag
Forward Sprag Assembly
Retainer Rings, Sprag Assembly
Outer Race, Forward Clutch
Washer, Thrust (Input Carrier to Race)
The following information applies when this sprag is used in 1982-86 transmissions.
The new design sprag can be used on models 1982 through 1986, by replacing the entire assembly (637 - 644). Individual components are NOT interchangeable.
Important: The wear plate (640) and input thrust washer (660) are not required with the new sprag. Use of the thrust washer and wear plate with the new sprag assembly will cause a misbuild (correct end play cannot be obtained).
Hey super mechanic. This answer is for a 97 geo prizm with an automatic trans.? If so what is the rough estimate to fix?
Yes, Geo is made by GM
1982 - 2005 GM Passenger Cars and Light Duty Trucks
Most of the trans shops, (and dealerships) will want to rebuid the trans whenever they open it up all the way.
Normally in the price range of $600 to $900
Yeah i realize geo is gm but i was told the motor is made by toyota. Does that mean everything underneath is toyota?
1997 Geo Prizm L4-097
The trans could be make by any company, but the insides are basicaly the same. Would you rather take it to a Toyota dealer?
Auto Mechanic
ASE master, 30+ years. All makes and models. Trouble shooter, shop forman, service manager
No it doesn't matter. Thanks for your help super mech.