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1999 GMC 1500 Pickup Questions

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It ran fine when I parked it, about a month ago. Put the new battery in today, and it won't run. It starts, but will not run long - 3 to 5 sec then dies
Dash display light comes on but when finger removed light goes off and cruise wont work
New exhaust system n o2 sensor ..still smoke with the engine warm up ..but sometimes no smoke..and other times a lot ..the oil is not milky ..but oil cap looks like water bubbles on it ..Please help me out..thank you
When the key is turned nothing happens except lights come on. When turned to the start positive n trans. Indicator lights go out and all 2wd/4wd lights come on.
just replaced fuel pump, now it won't idil correctly. idil jumps from 400rpm to 1500 rpm and the motor will die.
like on the disc itself like most trucks not this alien craft i ended up with stupid set up
sometimes and sometimes it won't start. Let it sit for 10-15 min and it starts. Any suggestions on what the issue might be?
i have the newer body sierras it has a 5.3 liter v-8 and when i start it bogs down almost to the point of dying i have replaced the TPS it worked for a week or 2 now its doing it again and it gets worse when its cold outside, also does this when i put it in drive or reverse
vin no 1gtek14voxz530597
after that my truck started running rough, no warning lights are on. Just a rough sound from tires. What could be the problem?
Help Please =)
also how to reset oil light
heater core
could it be a wheel bearing or the whole rear end?
My air conditioning is not working. I have checked everything but the damper door or the motor that controls it. Where is this located on my truck?
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