Corvette Fever
Facebook Click here to find out more!

Transmission Problems!

Item Posts    Sort Order

Transmission Problems!
New User | Posts: 2 | Joined: 03/10
Posted: 03/21/10
12:14 AM

First post guys, I hope someone can give me a little advice. I have a 99 Corvette automatic with 105 on the miles, I've only had it maybe 6-8 months. Never had any problems with my transmission. Two weeks ago I was coasting to a red light with it in neutral, I dropped it into drive and I continued to coast through the intersection. NO DRIVE!

All I have is reverse! I dropped the trans pan, changed the filter, and added fluids. The old trans fluid seemed fine, I didn't have any leaks prior to this, no issues. If I start the car now, the "steering wheel lock" light will come on but my wheel isn't locked. I put in into gear and my RPMs will rise like it wants to go into gear and I also checked the linkege, it seems fine. What next? Any advice? Getting tired of driving in reverse.


waynep7122 waynep7122
Guru | Posts: 1114 | Joined: 08/09
Posted: 03/22/10
08:30 AM

were you actually putting the shifter in neutral while coasting..

dropping it back into gear in my opinion as a sometimes transrebuilder.. is going to be really really hard on the internals...

your transmission is also computer controlled... so you have to plug in a scan tool... scan it for codes... before anything is done..

was there any debris in the bottom of the pan???????   fiberous.. steel bits.. brass bits.. aluminum bits..

i am in NO way a transmission professional... who knows fluid flow i spend my live under the hood and around the brakes and suspension..  but i know enough to be dangerous...

there is also a possibility that you may have stuck a valve in the valve body when you did that..  or in the front pump... or broken something ....

i guess that the license plate frame mounted  back up camera and dash board monitor comes in handy for going backwards at speed...  ;-)      sort of like a UAV the air force flys..  but the controls are reversed..

its not impossible for automatic transmissions to break.. it happens every day..

scan for codes first...  and one thing.. does it move forward when you drop it in second gear or low gear??????

warning.. not all scan tools will pick up transmission codes...  and do not erase them... until you talk to a drivability or transmission mechanic..   when codes set.. the computer stores data about what the car was doing when the code set.. makes it really easy to understand what was happening when the code set...

here is a generic list of transmission codes.. from this link

DTC Codes - P0700-P0899 - Transmission

P0700 Transmission Control System Malfunction
P0701 Transmission Control System Range/Performance
P0702 Transmission Control System Electrical
P0703 Torque Converter/Brake Switch B Circuit Malfunction
P0704 Clutch Switch Input Circuit Malfunction
P0705 Transmission Range Sensor Circuit malfunction (PRNDL Input)
P0706 Transmission Range Sensor Circuit Range/Performance
P0707 Transmission Range Sensor Circuit Low Input
P0708 Transmission Range Sensor Circuit High Input
P0709 Transmission Range Sensor Circuit Intermittent
P0710 Transmission Fluid Temperature Sensor Circuit Malfunction
P0711 Transmission Fluid Temperature Sensor Circuit Range/Performance
P0712 Transmission Fluid Temperature Sensor Circuit Low Input
P0713 Transmission Fluid Temperature Sensor Circuit High Input
P0714 Transmission Fluid Temperature Sensor Circuit Intermittent
P0715 Input/Turbine Speed Sensor Circuit Malfunction
P0716 Input/Turbine Speed Sensor Circuit Range/Performance
P0717 Input/Turbine Speed Sensor Circuit No Signal
P0718 Input/Turbine Speed Sensor Circuit Intermittent
P0719 Torque Converter/Brake Switch B Circuit Low
P0720 Output Speed Sensor Circuit Malfunction
P0721 Output Speed Sensor Range/Performance
P0722 Output Speed Sensor No Signal
P0723 Output Speed Sensor Intermittent
P0724 Torque Converter/Brake Switch B Circuit High
P0725 Engine Speed input Circuit Malfunction
P0726 Engine Speed Input Circuit Range/Performance
P0727 Engine Speed Input Circuit No Signal
P0728 Engine Speed Input Circuit Intermittent
P0730 Incorrect Gear Ratio
P0731 Gear I Incorrect ratio
P0732 Gear 2 Incorrect ratio
P0733 Gear 3 Incorrect ratio
P0734 Gear 4 Incorrect ratio
P0735 Gear 5 Incorrect ratio
P0736 Reverse incorrect gear ratio
P0740 Torque Converter Clutch Circuit Malfunction
P0741 Torque Converter Clutch Circuit Performance or Stuck Off
P0742 Torque Converter Clutch Circuit Stock On
P0743 Torque Converter Clutch Circuit Electrical
P0744 Torque Converter Clutch Circuit Intermittent
P0745 Pressure Control Solenoid Malfunction
P0746 Pressure Control Solenoid Performance or Stuck Off
P0747 Pressure Control Solenoid Stuck On
P0748 Pressure Control Solenoid Electrical
P0749 Pressure Control Solenoid Intermittent
P0750 Shift Solenoid A Malfunction
P0751 Shift Solenoid A Performance or Stuck Off
P0752 Shift Solenoid A Stuck On
P0753 Shift Solenoid A Electrical
P0754 Shift Solenoid A Intermittent
P0755 Shift Solenoid B Malfunction
P0756 Shift Solenoid B Performance or Stock Off
P0757 Shift Solenoid B Stuck On
P0758 Shift Solenoid B Electrical
P0759 Shift Solenoid B Intermittent
P0760 Shift Solenoid C Malfunction
P0761 Shift Solenoid C Performance or Stuck Off
P0762 Shift Solenoid C Stuck On
P0763 Shift Solenoid C Electrical
P0764 Shift Solenoid C Intermittent
P0765 Shift Solenoid D Malfunction
P0766 Shift Solenoid D Performance or Stuck Off
P0767 Shift Solenoid D Stuck On
P0768 Shift Solenoid D Electrical
P0769 Shift Solenoid D Intermittent
P0770 Shift Solenoid E Malfunction
P0771 Shift Solenoid E Performance or Stuck Off
P0772 Shift Solenoid E Stuck On
P0773 Shift Solenoid E Electrical
P0774 Shift Solenoid E Intermittent
P0780 Shift Malfunction
P0781 1-2 Shift Malfunction
P0782 2-3 Shift Malfunction
P0783 3-4 Shift Malfunction
P0784 4-5 Shift Malfunction
P0785 Shift/Timing Solenoid Malfunction
P0786 Shift/Timing Solenoid Range/Performance
P0787 Shift/Timing Solenoid Low
P0788 Shift/Timing Solenoid High
P0789 Shift/Timing Solenoid Intermittent
P0790 Normal/Performance Switch Circuit Malfunction
P0801 Reverse Inhibit Control Circuit Malfunction
P0803 1-4 Upshift (Skip Shift) Solenoid Control Circuit Malfunction
P0804 1-4 Upshift (Skip Shift) Lamp Control Circuit Malfunction
New User | Posts: 2 | Joined: 03/10
Posted: 03/24/10
04:07 PM

Thanks for the reply! There was no debris in the pan. If I drop it in low gear, you can feel it engage and it moves slightly. Before dropping the pain and changing the filter, it wouldn't do anything.