The 4.3  and auto trans. in my van loses power and vacuum while driving on
the hyway after an hour or so. I get vac. back by letting up on the
throttle.
When it loses power it wont stay at speed without downshifting to thrid gear

hi iv'e got a 99 k1500 silverado new body style with the 5,3lit vortec
engine.
my problem is i turn the ignition key on, and everything is fine. lights
come on every gauge reacts and iv'e

I have a 89 k 2500 5.7 engine. It   is on the 4 th radiator.  I
replaced the one row core with a 3 or 4 row core 43-1290 National
radiator supercool or heatbuster series.  The fan shroud hits the cores
and has worn holes in each one.  The radiators seem to be about 3/4

Truck is a 1989 ¾ ton with 350 engine.  Truck starts fine.  Runs good if I
accelerate slowly.  If I push the pedal down too fast, the engine bogs down.
If I let up on pedal, it will smooth out and run fine again.  I changed
plugs, rotor, and cap.  Any suggestions are appreciated.  ...

Should I be able to hear my turbo at all in the 6.5 ? I hear the Cummins,
and the 7.3 's whistling all the time. So I guess I'm asking if it is normal
for the 6.5 to be quiet....

Ratings on door are;
 GVWR 5950,GAWR - FRT 2800 , GAWR -RR 3150.
 Payload=1599   Astro is V6  Put new brakes on camper & Equalizer hitch
also trans cooler. Didn't have towing package. Van in good shape.

I have a 1998 Blazer with the typical windshield wiper problem. Of
course Chevrolet denies that the 98's and 99's  have this problem.
My question is this.  Does the 1998 wiper module have 3 or 4 screws
holding the cover on. Everything I have read says 3 screws but my

Looking for information on the 5.3 liter aluminum block that came in my 2006
Silverado. Is the cylinder surface of these motors a cast iron sleeve or is
it a Nikasil plated bore?
Thanks,

I've had a relatively slow coolant loss from my V6 truck over the past
several months.  I don't see any drips/puddles after I've parked, and
the oil doesn't seem to show any signs of coolant leakage into the oil
system (look for white/frothy oil from what I've been told).  However,

I had a speedometer cable snap some time ago.  When I finally got in the
charitable
mood to install a new one, it turns out I should have gone golfing
instead...

I have a 2000 Tahoe 5.3l the other week . The truck started running rough at
idle. I checked the vac. hose to the fuel regulator gas came out. Went to
advanced auto got a new one cleaned out the old one ,only held in by a clip.
started the truck now the new fuel regulator is ...

The heat riser on my 84 chevy pickup (with a 350) is broken. The bracket
rusted and the thing is just hanging there. The truck runs fine. Should I
bother fixing this? What does it do?
Thanks

I have been looking for a Transfer Case control module for a 99 Jimmy, it
has to be the 4 button switch type for the NP8 transfer case, I have looked
everyplace and no one has one, does anyone have any suggestions?

I have a 1993 Sierra Pickup.  The driver side disc brake occationally
gets stuck.  I usually just use the truck for trips to the dump.
I start my trip the brakes are fine.  Somewhere along the line before I
get home I can fell the truck pulling to the left.  When I get home

Has anyone tried the basic power upgrades for 2006 1500 4x4 Suburbans?
I'm thinking about looking into options like an aftermarket air filter,
chip, synthetic oil, cat-back, etc.  Fuel economy improvemets (if any)
and towing a trailer (~3500-4000 lbs.) with the truck loaded are the