My 98 Sierra C2500 5.7 did the same thing- sprayed ether and internal combustion backfire occurred- towed it home- Dis some prelim research- discovered the Spider injectors were shot- Purchased new from Oreilly-Fixed!
You might take a look at a 3/4 ton or above wheel. My C20 doesn't have an air bag. The only problem with the factory C20 wheel is the mount points for the wheel are realy weak. Thats why I had to replace mine. With any kind of upward or downward pressure (I grab the wheel to pull my self in)...
Back to the original post by 24 karat gold. One thing to check in your system I'd look under the blower case on the passenger side to see if the blower has sucked any plastic or paper up from the floor area. Many times I have discovered that to be the problem with the air flow. Wouldn't that be...
I have 98 GMC C2500 5.7 A/T. 233K.
Mods/Recent repairs
1.Install New Rockies VATS by-pass for starts/dies condition- No problems since installed April 2019.
2. Evap,compressor,condensor replace July 2018
I have an intermittent No Crank Condition.
Details: After Dash removed to replace Evap...