My '01 s10 does something like that. If you pull the lever to move the seat it won't lock in on its own. You have to push down on the lever and manually lock it into the groove.

 

Pull the seat out, turn it over and take a look. The lever will work one lock on one track and there will be a wire going to the lock on the other track that makes it work.

 

first try tilting it forward slide it all the way back and it should click. it works on mine bout yours may be something different

 

Nothings working so far with the seat in the truck so I'm going to have to take it out and give it a look. It's getting cold ha darn... But if worst comes to worst could I just find a seat from a Junk Yard and get my current seat cloth over the new seat? I love my interior it's the blackish base color with the red lines. and it says blazer on the driver side..

 

The tracks unbolt from the seat. If yours are bad just get tracks. The tracks are more vehicle specific but they will unbolt and bolt to any seat (at least all the GM's I done so far)

 

alright thanks for the info I'll keep that in mind

 

just look under it without pulling it out, see if there are 2 springs there, and if both are there, see if each of them are attached at both ends, my truck i was missing a spring, went to the junk yard and snuck one out, lol, works like a charm now

 

lol alright I'll look

 

did you manage to figure it out and fix it? i am having the same problem on my 2000 gmc sonoma but my problem came after i took out the seats as i had to remove the carpet and find rain leaks. I put it all back together and my wife slid all the way forward lol and back! how did you fix this ???

thanks!

 

Mine had the same problem, the lock doesn't engage fully because its bent, use a pair of pliers or a hammer and bend it back and it should work fine...did it twice now, the first time it worked for a month, the second time i bent it further and its been 2 months..still no problems, I think people kick it with their heels and bend it, lol