Is there a astro group on the net?

Idle is only sligtly rough, but Engine surges when throttle is opened
slightly. This happens when driving slow and steady with engine warm. I
can duplicate with air cleaner off and hand open throttle. Spray from
both injectors is even fan and can be seen to increase and decrease. No

how do you tell which temp. the fan clutch kicks in? IS THE TEMP.
STAMPED ON THE CLUTCH SOMEWHERE?

I'm going nutty with this vehicle. Intermitently the engine stumbles as I
start to accelerate,doesn't do it all the time. Seems to happen more when
I have the A/C on. as I slowly backed into my garage with A/C on it
started to stumble, I then turned the A/C off and it seemed to stop ...

I have a 454 LS-6 1969-1970. Could some one tell me what Mark 4 or 5 or what
I own?
TIA         Wayne

Is there a part number look up for Chevy parts ? I have a radiator that is
still new in the box, but I'm not sure what it fits. I'm hoping it is a
direct replacement for my truck, but want to be sure before I rip out the
old one and it doesn't match.

88 Chevy P/U Will Not Start Cold But........when I pour gas into the
TBI it starts fine and runs fine.  There possibly could be a cold start
injector but I am having trouble finding info on how to troubleshoot
this.  When I crank the engine cold the two main injectors spray 3

I need advice timing my S-10.  I can time a carbed engine but, I need
to know how to disconnect the timing advance on a fuel injected engine.
Also, do I need a tach attachment? If so, how do I use it (lol)?  What
degree advance and at what rpm. And so on-----

I recently purchased an '03 S10.  So far I'm loving my 16 year S10 upgrade.
I was considering replacing the factory stereo with one that can play mp3s.
I was told by the salesman, after he consulted with his installer, that my
factory stereo was, in his words, "the brains of my ...

I have been trying for days now to locate/ fix my A/C issue. I have a
99 Silverado that is not cooling as it should. When it cools, it is
fine, it is great. Sometimes it works, sometimes it doesn't.  Can't
find a common denominator there. Anyway, I HAVE checked the refrigerant

Any change in the body style anticipated?
Mark

my 1997 astro van wont start.it just turns over but does not fire up. it
started once but cant get it to start again.

1994 GMC K-1500
"AC" is blinking on the climate control display.  Compressor will not
cycle to take in freon.
I jumped the low pressure side.. no clutch cycle.

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,

In order to get the right serpentine belt for my 2000 Silverado 5.3 Z71 I
need to know which alternator I have (100 amp, 105 amp, or 130 amp), how can
I find this info? The alternator doesn't have any markings visible while
installed. The original belt is a GM 12554029  URN 6PK2345. ...