99 sierra 5.3 trans limp mode

[johndeere120]

ok i will start with that im new here

 

but i have a 1999 gmc sierra (new body) 1500 ext cab 4x4 5.3 4l60e

 

im in need of some serious help i dont know where to go from here my truck trans is in limp mode and has no codes other than the EGR but no trans codes!

 

i will start with i have done and checked

i have checked all fuses all good

i have 12v at ex trans harness so the ignition switch shoould be good

good power and grounds at the pcm

good ground between batt and engine block and frame

new batt

new A and B shift solenoid,3-2 shift sol. tcc pwm sol. tcc lock up sol. and internal trans wire harness

 

so i guess is my next step the pcm?

 

any help would be great thanks

[gmtech4]

no codes except an EGR and you think the trans is in limp mode ???? wrong ,

 

stop throwing parts at your truck, take it to a technician ,,,you are wasting your MONEY !!!

 

cant help ,,a tech should diag the rest cuz if he messes up,its on him,you mess it up and its on you ,,,read me ?

 

stop diagnosing by guessing "so i guess is my next step the pcm?"

 

you need a kick in the butt,,, i get alittle nuts when people get caught up the guessing game

 

welcome to the site

[Jory Gifford]

On 2/10/2013 at 12:42 PM, gmtech4 said:

no codes except an EGR and you think the trans is in limp mode ???? wrong ,

 

stop throwing parts at your truck, take it to a technician ,,,you are wasting your MONEY !!!

 

cant help ,,a tech should diag the rest cuz if he messes up,its on him,you mess it up and its on you ,,,read me ?

 

stop diagnosing by guessing "so i guess is my next step the pcm?"

 

you need a kick in the butt,,, i get alittle nuts when people get caught up the guessing game

 

welcome to the site

 

 

Wow. You're a dick.