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If you got and overdrine button on the shifter the wire at the base of the shifter are damage say that on a gm pick 2003 on monday change the shifter goes great wire your broken it would be of help to no the model ill give you a couple of video just for you to see what it might be
There should be a tensioner for the shift lever in the transmission, that help keep the car in the gear you put it in. Check the shift cable or linkage, you may have a issue there. If all that checks out sounds like a internal issue, and most likely would set a code in your computer
This is limp-in mode, a feature of electronically shifted transmissions. For a large variety of potential problems, the computer that runs the shifting has seen an issue that puts the trans in limp-in mode, it wont let it shift.
You may have a check engine light on, start by pulling codes and expect to need access to a scan tool that reads not just engine codes but also power-train codes. It gets quite advanced very quick.
However it does not always have to be complex or expensive. If the electrical connector came off the trans, the trans would always be in 2nd, or if you have a fuse blown, it may happen as well, so check your fuses. Aside from that, you will likely be going to a mechanic even if just to evaluate the code(s), and to see what complaint the powertrain module has. It does not necessarily indicate a major problem.
Oh and don't forget to verify proper transmission fluid level.
Not knowing your professional experience at rebuilding transmissions, I would say that with the installation of the kit there has been some errors made in the assembly of the system. Run the fault codes to see if there are wiring issues and TCM issues and have a pressure test done on the box to detect any problems with pressures and operations of the bands and clutch packs. I would leave the box in place until I found out exactly what is amiss or I would not know if it was fixed or not.
Have the fault codes read. Replace faulty items. Use only genuine items as non-genuine replacement are not always compatible with the OEM fitted CPU units. Look for a sensor/servo fault. have the transmission pressure test done to eliminate internal problems . Check oil level in transmission.
hi, My first thought on this is that you may have a linkage issue. your shifter may read that you are in drive, but you may only be in 2nd gear. Check it out. bump it up so it will look like you are putting the car into nutral, but be careful to not go too far and put it in reverse. if that is not the issue, I would suggest that your car has a brain that knows that the transmition has a problem with 3rd gear and simply wont let it shift into 3rd because maybe there is no 3rd. like the band could be broken. post your results if ya dont mind. I am interested to hear more. I hope this helps ya. Tim
CHECK BRAKE LIGHTS FUSE.IF FUSE OKAY.BRAKE LIGHT SWITCH IS BAD.VECHICLE NOT SHIFTING OUT OF PARK PROBLEM COULD BE BLOWED FUSE OR CLUTCH PEDAL SWITCH FOR MANUAL TRANSMISSION OR TRANSMISSION RANGE SENSOR FAULTY AND PROBLEM IN BRAKE LIGHT SWITCH IF FAULTY IT WILL KEEP THE BRAKE TRANSMISSION SHIFT INTERLOCK SOLENOID FROM WORKING KEEPING YOU FROM GETTING VECHICLE OUT OF PARK.IF BRAKE SWITCH IS GOOD.PROBLEM IN THE BRAKE TRANSMISSION SHIFT INTERLOCK SOLENOID.
I hate to hear that but the good thing is this may not be as bad as you think. The governor, modulator, and/or throttle cable controls the shift points on non-computer (older) controlled transmissions. On computer controlled transmissions this shifting problem could be caused by a faulty sensor or a bad connection or defective solenoid pack. These types of problems can be resolved without the expense of a transmission removal. Take it to a reputable dealer for diagnosis. I always recommend a second opinion for any recommendation of needing a total rebuild. I hope this helps.
Take it to a transmission shop that has a Tech 2 scanner. The tech 2 scanner will not only scan the transmission but can also recalibrate the shift points. Other reason to why it wont shift under WOT it low transmission fluid pressure so check the fluid level and have a pressure test done on the line.
The 4L60E is a great transmission but there are some things that don't work well with them like some shift kits. The ECM is program the shift points which get's messed up if done wrong. best upgrade on the 4L60E was to swap out the servos for corvette servos or after market performance one's all for under $100.00 and in most case better then a after market shift kit.
Good luck and hope this help. take care not to burn up the transmission.