Burned or bent intake or exhaust valve. Valves adjusted to tight, Burned pistion.
Head gasket blowed between 2 cylinders.
Does it have fuel/spark/compression?
Bad switch.
Bad are burnt intake or exhaust valve. Pistion rings broken, Burned pistion. Blown head gasket. That is all that would cause no compression are a loss of compression.
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That would be the 4L60E
Most all suburban that year are 4x4
My first stop would be the dealership. If you do not want to do that you could go to chevy.com to check out the Chevy Suburban. They would have all the info you need to make your decision.
That would be the 4L80E
Worn rings or valve guides, possibly. You should check compression to ensure is kosher.
I would start @ the Fuel Filter Then the sock in the tank-IF the fuel pressure is OK then look @ the COIL etc.IF the Timing chain jumped a tooth-Serious power loss.IF all 8 Cylinder have Good Compression OR EQUAL Compression-IT is a spark or Fuel Problem. IF it has a Distributor EVEN a bad rotor will cause a serious power loss.
i have a 1996 Chevy suburban with 226,000 miles on it and it runs great so you make that decision
YES, They are the same engines. That would be a direct bolt in.