My son has a 1972 chevy impalla.... it starts up right away but when you put it in drive or reverse it wont move.

it really sounds like the torque converter is locking up, could be a lockup solenoid or the converter is starting to fail or failed, have a tranny shop check it out. Does it not go into reverse too? That would be a dead give away.

Sounds like the reverse band or servo has gone out. Transmission shop needed for a confirmation.

what colour is fluid- should be bright red and no burnt smell- post back with answer- how many miles?- when did problem start?

Sounds like you lost a solenoid or two in the transmission. Worse case would be burnt clutches or bands. It needs to be on a scanner to tell for sure. A code reader will only pick up a generic 700 code. Not the codes you need to know. Plus with a scanner you can command solenoids on and off and tell if they are working.

. I would check the shifter cable. If it broke in reverse while you're son was putting it in drive that would cause it to remain in reverse . Being stuck in reverse would also cause it not to start because it's in gear.

it appears that the brake is faulty and when in forward direction is putting itself on. It is free in reverse. check the brakes are in good condition and properly retained

trannsmission solienoids may be sticking, try some tranx, you can get at the parts store. this stuff is great. it might take a day or two but it works. for the other truck, did you have the front brakes checked, they can bind up, when you back up it frees them up.also, but not probable for 2001 check the brake hoses, they can collapse from the inside, not letting your brakes release all the way good luck

shift linkage needs adjusting,,could be bent, easy fix, located along firewall to fram beneath the column, ask your son wut he ran over and didnt tell u about... hope i could help...:)

What engine? Rear wheel drive ?Sounds like shift linkage or cable out of adjustment slightly. Have a look at where cable or rod attaches to transmission for adjustment. If not sure of what your looking for get back to me with info.

let it warm up for 10 minutes before you put it into drive if it goes rite in then you need to change the transmition filter in it i had 2 chevys do that it will go rite int reverse gear but wont go into drive rite away after the engine runs for a while it shuld go into drive