I am looking for information on Chevrolet 0.8 5 speed transmission, repair manual

The transmission speed sensors of normal cars are
located near the front and rear of the transmission housing.
Check the repair manual for your car. I hope it will help you out.

The P0720 code is a standard OBD-II trouble code that detects an issue with the output speed sensor circuit. The powertrain control module (PCM) relies on a signal from the output speed sensor, so that it can determine the correct shift strategy and send that information to the transmission.

From that, I would say replace the speed sensor and check the wires as they may have gotten pulled and are not connecting well.

DTC P0717: Input Speed Sensor Circuit Low Voltage
If you don't know anything about automotive electronic's , sensor electrical circuit's ,your best bet would be to take your vehicle to a qualified repair shop.
Finding a wiring diagram ,reading how this sensor work's an testing the electrical circuit using a DVOM - digital volt ohm meter , going by a factory service repair manual .
Diagnostic Fault Information
Circuit/System Description
The input speed sensor (ISS) is a hall-effect type sensor. The sensor faces the 1-2-3-4 and 3-5-R clutch housing machined teeth surface. The sensor receives 8.3-9.3 volts on the input/output speed sensor (ISS/OSS) supply voltage circuit from the transmission control module (TCM). As the 1-2-3-4 and 3-5-R clutch housing rotates, the sensor produces a signal frequency based on the machined surface of the 1-2-3-4 and 3-5-R clutch housing. This signal is transmitted through the ISS signal circuit to the control solenoid (w/body and TCM) valve assembly. The control solenoid (w/body and TCM) valve assembly uses the ISS signal to determine line pressure, transmission shift patterns, torque converter clutch (TCC) slip speed and gear ratio.

Circuit/System Verification
Engine idling, observe the scan tool Transmission ISS parameter while varying the engine speed. The Transmission ISS parameter should change with the engine speed and not drop out.
Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

Your best bet ,take it to a qualified repair shop.

found this 700r4 wirte up in a chevy forum

if not eneough information i get my tranny repair manuals from ATGS site
ATSG New Releases
and other repair manuals

700R4 has shutter in OD The 1947 Present Chevrolet GMC Truck Message Board...

Behind the transmission output shaft

Here's a link to the speed sensor. Repair Guides Fuel Injected Electronic Engine Controls Vehicle Speed... Here's what it look's like. Vehicle Transmission Speed Sensor 1996 Chevrolet K2500 3 4 ton 4WD 8...

Chevy Corvette 1990-1996 Factory Service Workshop Repair Manual

Chevy Corvette 1990 1996 Factory Service Workshop repair manual...

Covers:Chevy Corvette 1990-1996

This manual contains all the necessary instructions needed for any repair your vehicle may require from bumper to bumper.
Whether its routine maintenance, such as tune-ups and brake service, or more extensive repairs involving engine and transmission disassembly. This file provides the most reliable information to perform the job.

Accurate, clear and concise text, combined with illustrations, make it possible for anyone with even a bit of basic mechanical knowledge to safely and easily service and repair their vehicle.

Comprehensive diagrams, in depth illustrations, and all the manufacturers specifications and technical information you will need is included.

Section included:

Tune-up and routine maintenance
General Engine overhaul
Automatic Transmission
Transfert Case
Driveline
Brakes
Suspension and Steering
Body
Chassis Electrical

Format: PDF - Download
Years:1990 1991 1992 1993 1994 1995 1996
Compatibility:any windows (95-98-ME-XP-7-MAC-LINUX-IPAD-IPHONE-IPOD)

GO ON INTERNET TYPE IN TRANSMISSION REPAIR MANUAL FOR A 1998 FORD EXPEDITION. SHOULD FIND ONE.IF YOU WANT FORD FACTORY MANUAL LOOK UP FORDS TRANSMISSION AND TRANSFERCASE REPAIR MANUALS THEY NOT CHEAP I BOUGHT GM TRANASMISSION AND TRANSFERCASE MANUALS IT COST ABOUT $150.00 DOLLARS MANUAL 8 INCHES THICK ITS WORTH IT GOT EVERY PART YOU LOOKING FOR GOT LOTS PICTURES AND GOOD INFORMATION DONT LEAVE YOU HANGING.

This repair requires the removal of the transmission from the vehicle. You would be much better off purchasing a repair manual at any of the local part stores for a detailed description of the tools necessary and procedures. Way too detailed to type out on fixya.

hi, try taking to down to your local garage and asking then to have a look.. it might need a new clutch though if its serious but the gears might just need oiling