Question about 1997 GMC Jimmy
Posted by Anonymous on
There are two basic reasons for not starting - no spark or no fuel, both of which are controlled by the ECM. You need to check error codes and these items - for the spark, test it at the cylinder 1 sparkplug; for the fuel check the pressure (if too high or low, problem!).
Posted on Sep 11, 2017
SOURCE: fuel problems 97 jimmy
Yeah, The fuel pump can go bad . The normal warranty on the pump is 12 months or 12,000 miles. This is very rare . I would check if the fuel pump had a lifetime warranty.
I would also check the ignition switch, and all the fuses to make sure the fuel pump is the failure.
Posted on Mar 18, 2009
Fuel pump relay is in your gluve box. I belive there are three relay's there and it could be the middle one. Getting old memory bad LOL.
Posted on Apr 05, 2009
try the oil pressure switch, that was a common problem on Gm trucks when I used to work on them, the oils switch was bad and woulden't allow it to start and the ones I worked on were on the back of the distributor.
Posted on May 29, 2009
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.
Posted on Sep 15, 2009
Testimonial: "Hadn't thought about the O-rings on the rod thanks for the idea. Great Idea Thanks!"
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