Takes a few seconds extra to go in drive, could this be a transmission issue or solinoid issue or linkage issue

There are a few potential causes for this issue in a 2002 Chevy Trailblazer, including:

1. Transmission issues: The transmission may be damaged or malfunctioning, causing it to not shift into gear. If this is the case, it will likely require professional repairs or a replacement.
2. Shift solenoid failure: The shift solenoids control the movement of fluid in the transmission, and a failure of one or more of these solenoids can cause shifting problems, including not being able to engage any gears.
3. Electrical issues: The transmission may not be receiving the correct electrical signals from the transmission control module or other components, which can cause shifting problems. This could be due to a problem with the wiring, connections, or other electrical components.
4. Low fluid levels: If the transmission fluid is low, this can cause shifting problems, so it is a good idea to check the fluid levels and add more if necessary.
5. Clutch or pressure plate problems: If the clutch or pressure plate is damaged or worn, this can cause shifting problems, including not being able to engage any gears.

If you have checked the linkages and fuses, and are still experiencing the issue, it is recommended that you have the vehicle inspected by a professional mechanic to diagnose and repair the problem.

If the transmission was recently repaired and the vehicle is still having trouble shifting into drive, there could be a few possible issues at play. Here are a few things that might be causing the problem:

1. The transmission was not properly reassembled: If the transmission was not put back together correctly, it could be causing shifting problems.
2. There is a problem with the transmission fluid: If the transmission fluid is low or contaminated, it can cause shifting issues.
3. There is a problem with the shift linkage: The shift linkage connects the shift lever to the transmission, and if it is damaged or not adjusted properly, it may be difficult to shift into gear.
4. There is a problem with the transmission control module: The transmission control module is a computer that controls the transmission. If it is not functioning properly, it can cause shifting problems.

This could be a lot of things. Gear shifter linkage problem, a transmission stuck by a bad solinoids.

there is a reverse solenoid separate to the others. you may get a serious problem by the use of diesel as that fuel is still in the converter and will affect the transmission oil especially when the oil is hot.run the fault codes to find what is wrong.

It sound`s like the excess fuel solinoid is sticking, take it out and give it a good clean...

first thing i would do is put it on a lift and have someone move the shifter while i watched the linkage
on the transmission. if the linkage is broken it will be obvious and you can fix it. if the linkage is fine then i would check my drivetrain warranty, possibly 10yrs/100kmiles, if not in warranty then take it to a transmission shop.

transmission is not shifting back to the low position
if you can shift frim first to second and it is fine then the trans is not shifting back to low there is a solinoid in most newer models and if they fail thats what will happen

Never back flush a transmission you can blow out the seals on the transmission pump and torconverter
is the cable going to the transmission working if it is it is in the transmission that eather the linkage /or solinoid is broken or stuck if you don't know anything about the place that is doing the work then don't have it done ...

Sounds like a neutral safety switch in problem #1 and a sticky or faulty solinoid in problem #2
The tranny has quite a few solinoids that are electronic which sometimes burn out or fail with high mileage.
Hope this helps
Regards
Sam

I have a similar issue with my vehicle. I either have to shift to neutral or it stalls. The advice I received was to unplug the 4 prong connector at the front of the transmission. What truly is the problem, as I was told, it the overdrive lockup solinoid inside the trans cover. I looked at replacing it and it looks like a tough job to do, lots of brackets to remove to remove the cover. Looks like the solinoid is on top of the trans, but getting to it is another story. Good luck.