SOURCE: 2000 GMC Jimmy will not start
The oil presure switch does have some bearing on the problem but my suggestion is to change the coil. I had a the same problem with an astro van. I changed everything that you have described and it fixed the problem just for a little while and then all of a sudden did it again. I changed the coild and the cold start swithch and never had the problem again.
SOURCE: 2000 GMC Jimmy won't start
Hi: Have run into same type of problem, turned out to be a dead or very battery. Has nothing to do with the ignitin switch. With a low battery have also had trouble getting the key out of a 95 Jimmy. Boost unit to get running then discommect battery, if unit stall right away replace alternator, if stays running replace battery. If you get the unit runnimg and try to drive it as is you should find lacks power and wants to stall.
SOURCE: 1996 GMC K1500 Pickup Starting Problem
i would try a fuel filter first. the fuel gauge going crazy is most likely the sender they go bad and eventually stop working. the bummer is you have to replace the fuel module. these aftermarket are about 200 bucks. the module comes with the pump and sender which is the next part you want to look at. gm has some issues with the harness to the fuel pump externaly. it actualy will melt and start to lose conection. i would check this by visualy inspecting the plug on top of the tank. unplug it and take a look. if it is at all disscolored replace the pump (module). the new pump comes with a replacement harness (make sure its in the box)hope this helps and good luck
SOURCE: Engine sputtering now it wont start
sounds like the same problem i was just having try changing out your fuel regulator its pretty pricey try to find the cheapest around $75.
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