No it does not if it is a s10 blazer
Does a 1999 Volvo s70 have a chip in it
No it does not.
In 1999 it may or may not have one. If it has a thick black head with the hole in the head of the key being offset, then it is probably a chip key. If the hole is in the center top of the key or completely metal then it is not a chip key.
yes
If the key is gray, yes. If the key is black, no.
No.. the chip "so-to-speak" is integrated into the key lock cylinder.
Before 1998 - no. 1998 and after - yes.
If the key is gray, then yes.
yes
No it does not. Not until 1999.
No, it doesn't. It uses a "passlock" system. The resistor, or "chip" is part of the ignition lock cylinder. The chip in the key is called "passkey", where there is a resistor in the key, which is quite visible.