1996 CHEVY BLAZER 4.3 LT RANDOM MISSFIRE - 1992 Chevrolet S-10 Blazer

SOURCE: Chevy Blazer 4 x 4 and Engine Light Problems

To your problem with the air bag, I was driving an 07 GMC Sierra 1500 that was doing the same thing. Next thing the charges went on the seat belt tensioners, luckily I was parked because the belts gave me a pretty violent **** back. Turns out the SDM was corroded and caused the action, and there was no reason the air bags didn't deploy as well other than pure luck. I would say get it checked by GM, you don't want to mess around with safety systems. You can visually inspect the integrity of the SDM, it's located under the driver's seat, unfortunately I think the seat has to be removed to see it. Mine had a calcium like build up all over the external casing.

SOURCE: my 96 chevy blazer has a code

my 96 blazer would have random missfires.... sometimes more than one cylinder at a time... there are a few things to try.... 96 vortecs still used distributor caps... but they had such a high intensity spark that they were well noted for frying distributor caps and ignition coils... i would start there... also a few times i had to replace the crankshaft timing sensor.... it could be something as small as a spark plug wire... i would start with the ignition before spending money to check the fuel system

SOURCE: timing specs on a 1996 chevy tahoe LS 4wd 5.7

timing is about 5-7 deg btdc and if it is throwing misfire codes. i would suggest using only ac delco spark plugs to avoid this issue.

SOURCE: 1996 Blazer: How do install a 1996 chevy blazer serpentine belt...

It will have a diagram right above the fan blades to show you how it needs to be ran. Just need to release some pressure off the belt tensioner to make it all fit

SOURCE: 1996 chevy blazer tire size

stock is generally the 235/75r15, but if you can find someone to install them or do it yourself easily be able to run 31x10r15 for a little meatier look, this would involve a slight trim of the front skirt edge on some models or depending on your suspension. Any tire shop would easily be able to tell you stock tires or what would fit, but most major retailers (walmart, fleetfarm) will not install ANY tire not listed as factory. so you would have to find a private shop then.