20 Most Recent 1998 GMC Safari - Page 7 Questions & Answers

This van came with platinum spark plugs which should be good for 100,000 miles. I would replace the fuel filter at 50,000 miles. As long as you have no running or starting problems that's all I would do in the first 100,000 miles

When the van is warmed completely check the top radiator hose by squeezing it together. If you can squeeze it without any resistance replace the radiator cap. The coolant is not circulating properly and can keep the heater from working. If you cannot squeeze the hose together than you may have a bad water pump. The water pump has fins inside of its' case. Those fins may be rusted completely off to where the water cannot circulate. You can check the circulation by feeling the top and bottom hose coming off of the water pump to the radiator. Both those hoses should be the same temp. If not I would consider changing the water pump.

It has to be removed and replaced.it should be at the parts house or dealer ,,you could do a salvage yard but sometimes you are buying somebody elses troubles at a salvage yard..have fun hope it helps

I would start by changing the spark plugs and leads.

check gauges means that the car senses something is not working properly, such as temp gauge reading to hot ,or oil pressure reading to low ,fuel to low, its to get your attention that something is wrong .

Check this out it should help:

http://townhall-talk.edmunds.com/direct/view/.f0fe68f/167

engles?

Could be the ignition key/lock assembly hanging up in the "start" position. I think the older model GMC's have an adjustment on top of the steering column. A trip to your local library in the automotive section will have some repair books on this model (Chilton, Haynes...).
Good Luck.

first did you replace just the pump or did you get a complete assembly. the reason i ask is gm vehicles are notorious for there sending unit issues i have one currently that does the same. also on some aftermarket units they dont seem to work as well the delphi units are still available at most parts stores and not to outragious. hope this helps

Remove air flow sensor connection and try to start, If it is starting have to be replaced MAF sensor

I hate to state the obvious BUT... are you sure you have the right key? Will the key turn O.K.? Does it have electric locks and if so, will they lock/unlock with the remote key fob? Need more info, please . . .

Its probably better to start over and remove the window glass from the regulator (use duct tape and tape in position to the window frame, it will hold fine). Remove the regulator and motor assembly and put together as a unit, then reinstall. Bolt back onto door and reattach the glass. Next time its easier to just remove the motor by itself, not the whole assembly. The rivets can be drilled out and replaced where it sits. You may have to slightly bend the corner of the inner panel to get rivets in, just bend back when done.

find the water pump pulley on the engine and follow the large black coolant hose probably 2" diameter to the end there should be a bubble or half circle housing with usually 2 bolts holding it on. Right under it is the thermostat

look for radiator drain in underside of the radiator, look at radiator on both sides under neath the van. location will be on under side of the radiator,different models and makes makes it difficult to insure which side,driver, or passenger, just look for a release valve for radiator drain! jack it up,use a jack stand please! look on each side of the radiator for a pep **** valve, that can be turned to release the fluid to drain fluid. hope this helps and thank you for choosing fixya.com

Please see my tip at http://www.fixya.com/cars/r6715318-causes_gasoline_engine_misfires . These are generic instructions. If you get stuck or need specific instructions for your car, please get back to me with model, year and engine info.

start with changing the fuel filter and the air filter. if thats not the cure then have the fuel pressure checked. the fuel pump may be going out.

how cold? frezzing cold? or the high idle is there at all times

is key switch messed up maybe replace it . does it feel like it workin rite.