Did you put the unit in with the battery still connected? you my need to disconnect it, for a few seconds, then reconnect it, cycle the key on and off 3 to 4 times, (not start ,just on) , then try to start it, if that doesn't help you my need to get an obd on it and "clear all" then try again.
SOURCE: 2000 GMC Jimmy Transmission Whine
I recently took my vehicle to a transmission shop and they had to rebuilt the transmission right through. I was recently told that the transmission is a common problem in these vehicles. Sad that GM can not fix or recall the transmisison since there is a problem.
SOURCE: 2001 gmc jimmy not starting
Did they do a fuel pressure pressure test to determine that its fuel pump? And if so what was the p.s.i.?It should be around 55 to 60 p.s.i. a few pounds under 55 p.s.i. Pump needs replaced, Your shop should have chk. this when it was there the first time. Did they by chance chg. the fuel filter, that can hinder it from starting too.
Testimonial: "it was the fuel pump thank you"
SOURCE: my 1999 gmc jimmy will not start unless i use starting fluid
u may want 2 check with a dealer gmc dealer but u may have 2 fuel filters on your jimmy poss. an in-line filter runs down the pass. side or driver side not all cars are the same
SOURCE: 2000 GMC Jimmy won't start
i had the same problem and replaced the fuel pressure regulator. Cost about $45 at advance auto store or about $90 at napa auto stores. Once i replace that my truck started right yup and runs like a champ
SOURCE: Brake pedal still goes to floor 2000 GMC Jimmy
It's very possible to be the master cylinder, the o-rings on the piston could be worn, letting the fluid seep back through instead of getting full pressure through the lines. Could also be the brake booster.
Try changing the master cylinder first, which is cheaper and easier, and see if there is a difference, you'll need to bleed the brakes again.
To check the booster,
With the engine off, pump the brakes until the pedal is hard, then hold pressure on the brake pedal and listen for air escaping, or the pedal goes slowly to the floor, Do that after the master cylinder has been changed, at least that will be eliminated.
Testimonial: "Hadn't thought about the O-rings on the rod thanks for the idea. Great Idea Thanks!"
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