GMC Savana 3500 Questions

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Gages come on when water temp goes to 260
when head lights on problem worse.also gear indicator flashes w signals.
We have a 15-passenger van that has started slipping into neutral randomly at speeds above 40MPH. Has happened three times so far. Without warning, the van will studder for a moment, the speedometer will drop to 0, ...
starves of fuel ,no power, after longer driving,might disappear after fuelup
I have been having problems over the years with no starts. I had the truck running the other day ready to drive off and the truck died. I checked gas (gas gauge problems for years now), and added gas,and still no ...
It idles very high that i have to put in gear to come down?? Thank you
I change the oil and filter on my box truck and was told by a auto parts sales associate to put 5 qt in, I did all that then the ck engine light comes on is that enough oil or something else is wrong?
headlights work only if switch is moved to manual position
I have a 2005 GMC savana 3500 work van. sometime while i am driving all my gauge and speedometer and radion stop working randomly and will stop for a minute maybe 2 and then come back on. i cant seem to get an answer ...
Van finally started, but loss of power when put in gear. What could this be?
all new calipers.
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...
she started last night, but now fuel gauge pegged and will not start. fuel gauge not pegged will start. HELP! thanks
I did a diagnostic and it keeps saying to replace the front airbag impact. I already replaced it, but it's still giving me the same reading. Any idea why?
This problem started after throttle position sensor was replaced. The van has a wheel chair lift and needs to charge at idle.
replaced pump 1 week ago, van died going down high way, pulled fuel filter, fuel from both ends was black, ran pump till spitting clean fuel and installed new filter, van will not start, now have pressure at both ends...
also has new coil and crankshaft sensor, no codes read from scanner, shot either into air breather and it exploded with out starting, engine has 86000, distribitor has also been replaced. have not looked at plugs yet,...
shifts good when it shift to the last gear it pulles back
it will shift down to a lower gear won,t do it all the time
If I give just a little gas to it, it runs fine. no check engine light, but occasional ABS light comes on. When I get to five miles per hour or less, seems as if ABS is engaging
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.
Ignition switch is turned off and in park. I have to pull the pmd to shut it off.