my best friend owns a 92 bravada with a 4.3 vortech v6. he was getting around 6 to 8 miles to the gallon.There were two types of injection systems used for those years. multi-point and center port. his was center port. this is by far the worst injection system ever used, hence its very short production. we found out through diagnostics that the injector was leaking fuel inside the plenum and causing a very dangerous fuel puddle to develop. three cylinders were being starved so the CPU tried to compensate by dumping more fuel. Obviously, this only made it worse. its not difficult to fix, but it could be expensive. the injector alone was almost three hundred dollars. but, this is something you can fix yourself with a few common hand tools and a couple of hours. you only have to remove the upper intake plenum, which is easily accessed, disconnect the feed hoses from the injector, transfer them to the new one, and repeat the steps in reverse. be sure to connect ALL sensors to their rightful places before trying to start the motor. and your good to go!
In the 1996 and up 4.3 they have Central Sequantial Fuel Injection there is no spider assembly and you are able to replace each injector. These injectors have poppets that can leak and cause higher fuel consumption. Leaky fuel pressure regulator.
Popping noice on my 97 bravada
It could be excess insulin secretion from your pancreas, but high glucose foods may cause this, and the enzymes would help
A dirty or clogged air filter would cause excessive fuel consumption, and it could cause the engine to surge, but I'm not sure about the drop in your alternator guage.
Excess fat accumulation in Adipost tissue.
If the all wheel drive stops working on a 1999 Bravada, there could be something wrong with the electrical sensors. There may also be a problem with some of the electrical wiring.
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If you are experiencing penis erection problems this could be due to health or physical issues such as injury, excess alcohol consumption, diabetes or Parkinson's disease. There are several options in order to overcome impotence such as surgery, prescription medications or making changes to your lifestyle.
Bad or misaligned stop light switch
First thing to check is the pcv valve.
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If the problem is that the air never gets warm, it's most likely a stuck-open thermostat. If not that, heater core may be plugged.
Alcohol consumption is irrelevant to your HIV status, although it could cause alcoholism.