1999 Chevy Silverado I am ready to blow this thing up!

Tiny
DONALD BOOTH JR.
  • MEMBER
  • 1999 CHEVROLET SILVERADO
  • V8
  • 2WD
  • AUTOMATIC
  • 178,000 MILES
OK this is a long story but I will try to make it as short as possible. About a year ago I was entering the highway and steped hard on the fuel and the RPM's rose but the speed didn't and it acted like it was starving for air. I took it to a shop and they couldn't find anything wrong, a week later I was at it again and so was the truck so I thought maybe the Transmision was slipping so I took it to a trasmision shop and they said it was the trany but lo and behold it wasn't, I changed the TPS, fuel pressure regulator, one of the converters and did a full tune-up. I had the injectors cleaned and I had the mass air flow sensor cleaned and checked. NONE of this has fixed the problem. I even took it back to the trans shop and they did a total rebuil for the second time and I had the shop drive it with a fuel pressue guage hooked to the rail while the problem was happening sooooooo. I am ready to push it down a hill into a lake or use it as target practice but I am not spending another $2000 on this truck. Please help me somehow.
Thursday, January 10th, 2008 AT 5:52 PM

5 Replies

Tiny
SERVICE WRITER
  • MECHANIC
  • 9,123 POSTS
IF the rpms raise, but the truck isn't moving, it leads back to the tranny. Thus the reason the shop rebuilt it the 2nd time.(At their expense I would assume).

I missed the fuel pressure results. Probably fine right?

Was the torque converter also replaced?

Are there particular instances when the problem is happening? Hot, cold at particlar speeds etc.
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Thursday, January 10th, 2008 AT 6:01 PM
Tiny
DONALD BOOTH JR.
  • MEMBER
  • 3 POSTS
Usually when it is warm or hot but the strangest thing I forgot to mention is that if I turn the truck off it stops for a little while but will return in about 5 min. I have know Idea if they replaced the torque converter or not. But even the second time after the rebuild it still does the same thing and the longer I drive it the worse the problem gets. No long road trips for this truck.
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Thursday, January 10th, 2008 AT 6:07 PM
Tiny
SERVICE WRITER
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HAve you have the codes checked in the BCM at all?
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Thursday, January 10th, 2008 AT 6:13 PM
Tiny
DONALD BOOTH JR.
  • MEMBER
  • 3 POSTS
Today was the first time I have heard of a Body computer so the answer is not yet, I have had the PCM checked a dozen times though.
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Thursday, January 10th, 2008 AT 6:17 PM
Tiny
SERVICE WRITER
  • MECHANIC
  • 9,123 POSTS
I did a little reasearch and found the 98 and 99s had valve body touble giving the same symptoms as you have. When it was rebuilt the valve body should have been replaced as well due to the bore becoming worn.

Try to have the tranny shop or yourself contact Transgo, they have a one piece valve and spring that relocates the valve in the worn
bore.
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Thursday, January 10th, 2008 AT 6:31 PM

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