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Chevy Silverado and GMC Sierra Gasoline Engine Problems

257 messages,  Last post on Nov 13, 2009 at 6:10 PM

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What is this discussion about? Chevrolet Silverado 1500, GMC Sierra 1500, Chevrolet Silverado 2500, GMC Sierra 2500, Chevrolet Silverado 3500, GMC Sierra 3500, Truck


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#246 of 257
Chev Ignition Module by mydogisalab
May 29, 2009 (5:58 am)
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I have had four ignition modules witin in the last two years. Three of these were within the last week. The shop claims it is a bad module, but three in a row? Does anyone have an idea on what else I can look for that is blowing up my module?
 
Thanks.
#247 of 257
Chev Ignition module by helpmetoday
Jul 19, 2009 (1:31 pm)
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Replying to: mydogisalab (May 29, 2009 5:58 am)

I am having the same problems as.. mydogisalab.. 4.3L engine Z in a 1993 G-20 van. symptoms, stops like turning the switch off, will restart , sometimes have to wait ten-15 minutes. This stop and start, is totally random. replacing the module is a temporary solution, for about 500 miles and 30 or so starts. When it runs it performs perfectly.The Van has only 45,000 miles, this problem showed up about 2,000 miles back. any ideas? please.
#248 of 257
2002 Chevy Silverdo Z-71 by crown3
Aug 24, 2009 (3:23 pm)
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220,000 miles, engine light is on and I've been told by few friends that it's likley the Oxygen Sensor, I've read several posts and notices that there may be more then one sensor.
#1 Where can I find detailed instructions with diagrams hopefully, how to place one or more of these sensors, if I'm able to determine through the local parts store which on it is?
#2 Is this a job that a basic do it yourself person can do?
 
Thank you
#249 of 257
Re: 2002 Chevy Silverdo Z-71 [crown3] by obyone
Aug 25, 2009 (1:40 am)
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Replying to: crown3 (Aug 24, 2009 3:23 pm)

There are 4 sensors. One before and after the catalytic converters. Since you're at 220K miles, I'd recommend changing all 4.
 
It's easy to do but you need to buy a special socket.
#250 of 257
Lifters, valves by kevin1970
Aug 24, 2009 (10:51 pm)
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#251 of 257
Lifters, valves by kevin1970
Aug 24, 2009 (6:48 pm)
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I was given a 2001 chevy silverado 2500 6.0l vortec. Its has 297,500 miles on it and runs very good, but however i have this tapping noise like everyone else have. But in my case, its at the start, during, and finish of my trip driving. My question is, "Will a 20/50 oil help or what would someone with experience suggest?" Thank-you in advance for any help.
Kevin
#252 of 257
Re: Lifters, valves [kevin1970] by davethecarnut
Aug 24, 2009 (10:51 pm)
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Replying to: kevin1970 (Aug 24, 2009 6:48 pm)

I would try those high mileage oil additives....it's constantly ticking when the engine is running? Maybe oil isn't getting up to the valvetrain.....
#253 of 257
Re: Lifters, valves [davethecarnut] by kevin1970
Aug 31, 2009 (9:06 am)
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Replying to: davethecarnut (Aug 24, 2009 10:51 pm)

Thanks Dave, Ill try them additives....the oil pressure gauge is bouncing back and forth between 30 and 60 while i drive and it will literally go to zero (0) if i stay in idle/park and the message light will say check oil pressure and the truck will cut off. Think the oil pump is bad? Thanks.
#254 of 257
oil pressure gauge by kevin1970
Aug 31, 2009 (9:11 am)
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On the Chevy Silv., 2001 - 6.0l vortec, w/ 298k miles...the oil pressure gauge is bouncing back and forth between 30 and 60 while i drive and it will literally go to zero (0) if i stay in idle/park and the message light will say check oil pressure and the truck will cut off. Think the oil pump is bad; going bad; the lifter/s or valve/s is tapping sorta loud? Thanks in advance for any advice. Kevin
#255 of 257
Re: 99 silverdo motor problems [jerryk2] by Duane99
Nov 10, 2009 (8:37 am)
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Replying to: jerryk2 (Jun 29, 2008 12:55 pm)

Did you find out what caused this? Mine will start up and act like it is flooding or running rich, backfiring under the hood and have no power for about 1 or 2 minutes and then it is fine. It doesn't usually do it in the morning, but when I come out after work, it does it almost every time.

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