4l60e no first or overdrive!!!
Thread Starter
Teching In
Joined: Mar 2010
Posts: 15
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From: Greenup, Ky
4l60e no first or overdrive!!! Hey guys. About a year ago my car stopped shifting into overdrive and took off in second. The car sat until I had the trans rebuilt. Now it's still doing the same damn thing. Is this a common problem? Can anyone help me? And please tell me it's a cheap fix. I don't want to pull this thing again if I do t have too. Thanks guys!
Oh and the car is a 99 ss.
Oh and the car is a 99 ss.
Joined: Aug 2007
Posts: 24,241
Likes: 89
From: Turnin' Wrenches Infractions: 005
From what I've seen it is what you call a "limp home" mode. Often a shut down and restart will clear the condition. It is caused by the PCM commanding it. Aftermarket high stall converters can cause it until the PCMs are tuned properly for them. Do you have any SES codes present? Have you scanned it? I would.
Joined: Aug 2007
Posts: 24,241
Likes: 89
From: Turnin' Wrenches Infractions: 005
Mine was throwing/storing the 2/3 failure code, which, when triggered, immediately caused the loss of 1st/4th as a failsafe. Is yours acting correctly after a restart or is this condition permanent?
Moderator
Joined: Aug 2010
Posts: 7,323
Likes: 529
From: Ann Arbor, MI
It sounds like an electrical problem with the trans - either a bad solenoid or a bad connector which is throwing all kinds of codes. Solve that and it will likely shift correctly again. Solenoids are cheap and replacing them only requires dropping the pan.
