Transmission not down shifting

[GREYGHOST1978]

About 5 months ago my 97 4wd tahoe started not down shifting. I noticed when i would come to a red light is sounded and felt like i was in 3rd gear starting out. I took it to my local tran shop and they replaced my 3-2 shift solinod. Just a month after that my tran case cracked and replaced with a used tran same year 97. Now my tran is doing the same thing starting out at a red light in 3rd gear. I thought it might be a computer issue. A buddy of mine said to connect the positive and negitice leads together on my battery said it might be a capacitor or diode issue. I am streching here any advice or help please....

 

[lesterl]

WHOA!!!! DONT CONNECT POSITIVE/NEGATIVE LEADS together on your BATTERY, JUST DONT..........

Check the fuse that feeds power to the transmission, and surrounding wiring, if the trans looses that B+ feed it WILL start in 3rd IIRC.....

 

[GREYGHOST1978]

Ok i will check that. Thanks

 

[GREYGHOST1978]

whoa!!!! Dont connect positive/negative leads together on your battery, just dont..........

Check the fuse that feeds power to the transmission, and surrounding wiring, if the trans looses that b+ feed it will start in 3rd iirc.....

where is the transmission fuse located at?

 

[lesterl]

Could be in underhood fuse box...

 

[GREYGHOST1978]

figured it out!!! I recently installed a remote start on my Tahoe. Now to figure out what wire I connected wrong?

 

[lesterl]

Nice, try unplugging the RS module and see if it runs better....