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
Ilikemy3s
Vibration after tapping a Pole
Replies
6
Views
868
gmcman
gmcman
shrek77
Tranny Cooler placement anything to do with Transmission failure.
Replies
10
Views
1K
shrek77
shrek77
DenaliHD66
Anyone fill up with non-ethanol gas?
Replies
10
Views
1K
Jkust
J
DenaliHD66
Post your cruising speed numbers:
Replies
8
Views
920
Shdwdrgn
Shdwdrgn
D
P0014 Code
Replies
15
Views
4K
Mooseman
Mooseman
MikesTB
below regulated operating temp
Replies
3
Views
788
v7guy
V
Shdwdrgn
Section for discussion of custom tunes?
Replies
10
Views
1K
Shdwdrgn
Shdwdrgn
C
Engine parts interchangeable with 2006 4.2
Replies
1
Views
994
jrSS
jrSS
B
Thumping while turning and braking
Replies
3
Views
924
CaptainXL
C
C
Question on engine rebuild 4.2 2006 trailblazer
Replies
4
Views
2K
CASHKJ
C
S
only getting about 4 qts of oil out on change?
Replies
3
Views
917
Matt
Matt
K
Which LSD?
Replies
15
Views
2K
Metsämies
Metsämies
T
Check Engine Light Confusion
Replies
27
Views
2K
TNEnvoyXL
T
C
Strange Experience Today
Replies
3
Views
967
gmcman
gmcman
B
Engine rattle with video
Replies
10
Views
1K
DenaliHD66
DenaliHD66
gmcman
Where to purchase fan clutch
Replies
28
Views
2K
DFWWIZ
DFWWIZ
C
2006 trailblazer removing engine-getting to transmission housing bolts?
Replies
8
Views
30K
dfc739
dfc739
SBUBandit
Overdrive Conditions
Replies
17
Views
2K
SBUBandit
SBUBandit
I
Engine flush or not
Replies
2
Views
1K
CaptainXL
C
J
3.73 to 3.42
Replies
17
Views
4K
Shdwdrgn
Shdwdrgn
C
Back and fourth play in crankshaft 2006 trailblazer 4.2
Replies
4
Views
2K
CaptainXL
C
KaRo
Heavy clunk from the rear or transfer case
Replies
6
Views
2K
KaRo
KaRo
05EnvoyXL
Belt tensioner 4.2 I6 question
Replies
5
Views
1K
CaptainXL
C
S
Differential fill plug
Replies
3
Views
1K
seanpooh
seanpooh
T
Remove/disable TCCM without Service 4WD/AWD light
Replies
7
Views
4K
timg
T
C
2006 4.2 Trailblazer Engine noise/knocking - VIDEO and SOUND
Replies
4
Views
2K
gmcman
gmcman
C
Time to lube some stuff...
Replies
0
Views
789
CaptainXL
C
H
cutting out at idle with compressor
Replies
9
Views
987
mrphoenix80
M
C
2006 Trailblazer ticking noise now wont run
Replies
41
Views
6K
Sparky
Sparky
N
Rough Idle...
Replies
9
Views
2K
johnnytutos
johnnytutos
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