Engine & Drivetrain

Repairs, tuning, modifications, & maintenance.

Vortec 4.2L I-6 New

2.5K
38.9K
Threads
2.5K
Posts
38.9K
Realism
Only 3000 miles on oil, but One year old. Change filter too?

Drivetrain New

1.1K
13.3K
Threads
1.1K
Posts
13.3K
B
Normal Transmission Temperature?

Vortec 5.3L V8 New

394
5.2K
Threads
394
Posts
5.2K
M
Runs rough couple miles after starting

LS2 6.0L V8

40
839
Threads
40
Posts
839
H
Cylinder 6 Misfire Mystery
D
where is the Idle air control valve on 04 envoy
Replies
6
Views
8K
gmcman
gmcman
Charles Austin Miller
Where to find ignition coil harness for 2005 TB 6 cyl
Replies
4
Views
679
Charles Austin Miller
Charles Austin Miller
T
Where to get info on Test IDs and Component IDs?
Replies
0
Views
3K
TonyT
T
gmcman
Where to purchase fan clutch
Replies
28
Views
2K
DFWWIZ
DFWWIZ
I
Which hub?
Replies
11
Views
1K
Instrumental
I
K
Which LSD?
Replies
15
Views
2K
Metsämies
Metsämies
2
Which Mobil 1 Oil to Choose
Replies
13
Views
2K
Mark20
Mark20
D
Which ODBII transmission temp
Replies
14
Views
2K
dougman
D
6716
Which spark plugs do we like again?
Replies
7
Views
1K
mrrsm
mrrsm
PProph
Whine/Squeal consistent with RPM change (Revisited thread see last post)
Replies
32
Views
4K
PProph
PProph
P
Whining noise, slow acceleration, MPG's getting worse. What to do next?
Replies
14
Views
3K
POW
P
Realism
Whirring buzz from under the hood, take a guess
Replies
12
Views
628
Realism
Realism
C-ya
Why change synthetic oil every 3,000 miles?
Replies
64
Views
6K
Sparky
Sparky
J
Wierd vibration at 60-70 mph
Replies
5
Views
1K
jigubhai2001
J
WeaponX
Will the dual port muffler from an H3 work in my trailblazer?
Replies
1
Views
516
HARDTRAILZ
HARDTRAILZ
Johnb868
Won't Start
Replies
2
Views
1K
Mooseman
Mooseman
DenaliHD66
Won't start again after being run
Replies
5
Views
860
gmcman
gmcman
L
wont start when it rains
Replies
4
Views
1K
shovenose
shovenose
Magyver
Worn u joints methinks
Replies
14
Views
2K
Up And Down
U
C
Worth picking up an extra engine?
Replies
6
Views
416
c good
C
H
Would a certified GM shop do this???
Replies
29
Views
3K
dmanns67
dmanns67
Malo
Would I feel any difference with a K & N air filter !!!!!!
Replies
43
Views
3K
blazinlow89
blazinlow89
C
Would you put in a new Fuel Pump if it's never been replaced at 190 K miles?
Replies
5
Views
686
gmcman
gmcman
M
Wrenching Help in Thornton/Westminster/Denver area?
Replies
6
Views
1K
miznitic
M
rizzo20
X66P Upper Engine & F.I. Cleaner (88861803)
Replies
9
Views
6K
seanpooh
seanpooh
Boricua SS
Year long battle is finally over...
Replies
28
Views
2K
Boricua SS
Boricua SS
C
Yellow Dip Stick Dilemma
Replies
6
Views
759
c good
C
ClicksCrazy
Your feedback on temp while towing.
Replies
13
Views
2K
ClicksCrazy
ClicksCrazy
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