Tranny

I have a 1994 chevy pick-up with a 700 R-4 The trans. likes to slip into passing gear at almost any speed. It does this erradicately, also I live in Minnesota, it is below freezing temps here now and I didn't have this problem last summer when it was warm. I had the local Gemini repair shop do a complete flush and fill of the tranny. It didn't help any. What can I do?

I'd put in a new fuel filter first, and if that doesn't have any change have someone check out the throttle position sensor. FYI, if your vehicle has the original tranny it is a 4L60E, basically an electronic controlled 700r4

to be correct you have 4L60E what do you mean it slips into passing gear?

troy: I'd assume he means it is downshifting.

I'd start where Jeremy said to.

Fluid and filter change (get it power flushed, if you don't you are wasting your time and money) If this doesn't help have the sensors checked and then if all else fails take it to a trans shop. My 700r4 does the same thing. It has on every tranny if have had in the 88. This is my third trans by the way.

I'd put in a new fuel filter first, and if that doesn't have any change have someone check out the throttle position sensor. FYI, if your vehicle has the original tranny it is a 4L60E, basically an electronic controlled 700r4

Well, I've tried just about every sensor one can replace. My next and last step is the computer. Thanks for your help (ALL) and I'll check back here later to see if any-one else has had the same problems and been able to find a solution.


Mike W.

just go ahead and bite the bullet and buy a trannsmission. by passing gear, i assume you mean from od(4th) to 3rd. OD is electronic, if you lost that, id say check sensors. 2nd 3rd, and reverse, however are hydraulic, you have internal failure.