1998 GMC Savana 3500 Questions

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is out. When engine is warm the light goes on and the transm goes from low to high gear. car will not go over 35mph when light is out
when head lights on problem worse.also gear indicator flashes w signals.
3 Mechanics cant find whats wrong with 2 air conditioners in my 1997-98 GFMC Savana short school bus.3500.I bought the short school bus and converted it in to a vending bus by taking out all seats and put in cabinets ...
I have to literally jump the battery in my bus everyday.It is a 1997-98 Savannah 3500 short school bus.I bought it and use it for a vending bus..I had to do that everyday for 6 months..NOT ONE mechanic could tell me w...
shifts good when it shift to the last gear it pulles back
Just had timing chain and gear-water pump-fuel pump filters-oil changed-and all work that involves with this fix.Befor all this work the vechicle quit like it ran out of gas and would not start.
Fuel pump died after tank ran low and put in gas installed an inline fuel pump and new fuel filter keeps stalling out and dieing on me . I dont know anything about auto repair have been told that it could be fuel regu...
engine cranks but does not start,i have no spark at the coil
serpentine belt broke so I replaced it and the altenator had to be replaced also, now the speedometer either reads zero is is erratic and engine acts like it wants to die at around 25-30mph even though my foot is all ...