Perplexed

Asked by Aug 23, 2016 at 04:30 PM about the 1999 GMC Jimmy 4 Dr SL SUV

Question type: Maintenance & Repair

My car keeps cutting off I have tried
everything checked alternator
Changed fuel pump
Changed battery
I'm on to the fuses but I'm not sure what to
look for

2 Answers

68,735

This may sound silly but make sure the top plastic piece that fits on the throttle body is secure. Not more than an hour ago a friend and I were tracking down a vacuum leak on his 2000 Chevy Blazer (same vehicle). I removed that top part of the air intake hose assembly and the engine stalled! It wouldn't restart until I put the piece back on. There's a metal clip that goes on the throttle body to hold the piece on so it must be a ground for the ignition system. If yours is loose, maybe that's the problem. Just a thought! HTH. -Jim

12,675

This may sound silly but locate a guy that knows how to work on vehicles.

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