Need help with transmission

[Ronnie Pleasants]

So I have a 2002 GMC Sierra 1500 Z71. I just put in a brand new 4l60e from GM. I also installed a new shifter linkage and a new neutral/park safety switch. I installed the safety switch in neutral as it said. Trans fluid is good and full. I have no reverse and my shift knob on the column is off by one. I can’t rev it in park past like 1700 rpms because it’s acting like it’s under a load trying to move going forward. When the truck is in the drive position on the column and going down the road normally it shift perfectly normal and fine 1st-overdrive. I can’t put it in to first with the knob on the column can only go down to second. Any help is appreciated. Thanks. 

[davester]

It has a shift cable going to the transmission?  Sounds like that isn't adjusted right, or perhaps not installed right.

 

Note, I can't say for sure, as I only know how it works for my 4l80e, but for my '04, the shift cable splits in the middle, and there is an adjuster in the middle.  And if the cable sheath clips in a bracket on the transmission (and the end of the cable then attaches to the shift lever), possibly the cable sheath isn't fully inserted?

[dtnel78]

Have you checked the computer for any codes? Did the transmission have a vin programming done to it? I saw something a long time ago where someone asked about issues they were having and the responder mentioned having it programmed to the VIN# but depending on year models it would vary.

A solenoid could be stuck, bad, etc. Go check and double check your installation instructions which I'd hope you had some guidance for some of the stuff?

You can get MitchellDIY for anywhere from 1-5 yrs for complete repair troubleshooting information, specs, flow charts, etc and you spend less than $40-$50 tops and have it for years to come. I've had it a long time and it's definitely saved me thousands though I've probably bought thousands in tools over the years, LOL.....

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