As of lately my vehicle has been plagued with a transmission gremlin. It's been hard shifting alot lately and it feels as if its under performing as well. To give you some background of my vehicle, I am the second owner, and it currently has about 176k miles on it. Here's whats up:
Symptoms Include:
- Hard shifting
- Higher RPM Reving
- Slower start-off (stop to go)
What I have done:
- Change Transmission Fluid
- Change Transmission Filter
Unfortunately the issue continues to persist. I went to a local parts store and they hooked up their reader to my Grand Prix which came out with the following error code (attached). The young man there did not understand what the error was, so he was unable to give me any positive feedback.
I do not want to loose my vehicle, Im quite fond of it and would love to fix it up and add a nice body kit to it for some flare. I was able to find this info on a site which pointed to a possible fix:
The PCM is detecting the solenoid is not performing properly. According to my ATSG guide for the 4T65E tranny P0751 which is a class "B" DTC error code indicates 1 - 2 Shift Solenoid Performance problem. All shift solenoids work as a logic gate based on the signals received from the PCM. One not working could conceivably affect other shifting, etc.
P0751 does the following:
It disables shift adapts.
Commands maximum line pressure.
Inhibits 3 - 2 downshifts when speed is greater than 30 mph
Basically the 1 - 2 shift solenoid is sticking in the off position and should be replaced.
Help me guys, let me know what the issue may be so I can move forward with repairing my vehicle before it gets worse! I look to you for support!
Thanks for reading this.
Mark
P.S. - Dont know if this is connected but my cruise control no longer activates as well.
