1987 GMC S15 Engine stalls

1987 GMC S15
16,000 MILES • 6 CYL • 2WD • AUTOMATIC
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PARHON
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My truck starts and when i turn the headlights on it stalls the engine then it doesn't get fuel after that what is wrong with it?
My heater is acting up also when I turn the fan to high the service engine light flashes and I hear a click under the hood and the fan wont blow on high only when it wants to what could be the problem there?
Mar 18, 2010 at 12:12 PM
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HMAC300
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clean all your grounds that you can find, eng to batt, body to batt, etc. sounds like you are losing power because of poor grounds. Also make sure your battery isin good condition, if it 's not it screws up the computer...
Mar 24, 2010 at 5:49 PM