Shift sol code I have.
My truck is a 2003 Denali with around 170K miles.
Symptom #1.....When it throws this code (When it has been sitting and is cold), it won't allow the truck to take off in 1st gear, it feels like its in either 2nd or 3rd gear ( I assume this is some sort of 'safe mode' ). But, once the truck idles a few mins and the fluids warm up, the code can be deleted with my reader and doesn't return even when driven all day, and drives fine. It only returns on cold morning starts when the fluids are cold.
Symptom #2.... especially when COLD, has a very slippy/delayed/slow moving shift/engagement on the 2-3 shift. It never slips once in gear though! Just the 2-3 shift point within itself is very slow and doesn't want to engage very quickly and firm. It just revs up and kinda hangs there for a second until its engaged into 3rd gear then everything from that point on is fine!
**Once the temps and fluids warm up, the condition of the slow/hanging 2-3 shift does improve, but still not perfect.
I'm also pretty sure on COLD days on start-up you can even faintly hear the shift solenoids making noise until the trans is warmed.
Fluid levels are good.
I need to address this very soon and I am I don't want to pay a shop to do this at the moment.
Can you all point me out what to replace? I assume a 2-3 shift solenoid and maybe a new valve body? Any tips or how to's?
Do I have a 4l60e or 4l80e in my 03 Denali?
THANKS!
ADDED: I have read that a faulty ignition switch can cause havoc with shift solenoids as well. But, I feel if that was the case then it would be a persistent problem which my problem does improve with driving and trans temps warm up.
My truck is a 2003 Denali with around 170K miles.
Symptom #1.....When it throws this code (When it has been sitting and is cold), it won't allow the truck to take off in 1st gear, it feels like its in either 2nd or 3rd gear ( I assume this is some sort of 'safe mode' ). But, once the truck idles a few mins and the fluids warm up, the code can be deleted with my reader and doesn't return even when driven all day, and drives fine. It only returns on cold morning starts when the fluids are cold.
Symptom #2.... especially when COLD, has a very slippy/delayed/slow moving shift/engagement on the 2-3 shift. It never slips once in gear though! Just the 2-3 shift point within itself is very slow and doesn't want to engage very quickly and firm. It just revs up and kinda hangs there for a second until its engaged into 3rd gear then everything from that point on is fine!
**Once the temps and fluids warm up, the condition of the slow/hanging 2-3 shift does improve, but still not perfect.
I'm also pretty sure on COLD days on start-up you can even faintly hear the shift solenoids making noise until the trans is warmed.
Fluid levels are good.
I need to address this very soon and I am I don't want to pay a shop to do this at the moment.
Can you all point me out what to replace? I assume a 2-3 shift solenoid and maybe a new valve body? Any tips or how to's?
Do I have a 4l60e or 4l80e in my 03 Denali?
THANKS!
ADDED: I have read that a faulty ignition switch can cause havoc with shift solenoids as well. But, I feel if that was the case then it would be a persistent problem which my problem does improve with driving and trans temps warm up.
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