Most likely it has a 4L60E
That would be the 4L60E transmission.
I have a 1996 305, Vortec with that number on it.
v6 vortec fires 1-6-5-4-3-2 with number 6 5 4 3 2 1 as you're standing in front of the truck looking in the engine
what engine?
I have a 95 blazer with a v6 vortec and there are 2 sensor on mine. 1 before the catalitic converter and 1 after it. Both are the same part number. They are easy to replace yourself but anywhere from $46.00 to $79.00 depinding on where you get them from. Good luck.
Number one is the front cylinder on the driver side.
is this a vortec engine 4.3 liter casting number on Block 10066061 - 4.3lg
The block casting number 14099090 corresponds to the Vortec engine that was produced primarily during the 1996 to 2002 model years. This engine was commonly used in various Chevrolet and GMC trucks, vans, and SUVs. The Vortec designation indicates it is part of GM's Vortec family of engines, known for their improved performance and efficiency.
Drivers side front
last cylinder on the passenger side
To set the timing gears on a 1997 Chevy Blazer 4.3L V6 Vortec, first ensure the engine is at top dead center (TDC) on the compression stroke for cylinder number one. Align the timing mark on the crankshaft gear with the mark on the timing cover. Next, position the camshaft gear so that its timing mark aligns with the mark on the camshaft. Finally, double-check the alignment before reassembling and tensioning the timing chain or belt.
The Chevy Blazer with a 4.3l engine has a firing order of 1-6-5-4-3-2. The number one cylinder is on the driver side closest to the front of the Blazer.