Engine & Drivetrain

Repairs, tuning, modifications, & maintenance.

Vortec 4.2L I-6 New

2.5K
38.9K
Threads
2.5K
Posts
38.9K
Mooseman
PO442

Drivetrain New

1.1K
13.3K
Threads
1.1K
Posts
13.3K
JayArr
Re-using Torque converters

Vortec 5.3L V8 New

393
5.2K
Threads
393
Posts
5.2K
christo829
Rate this Used Airfilter

LS2 6.0L V8

40
839
Threads
40
Posts
839
H
Cylinder 6 Misfire Mystery
OctaneRider03
4.2L I6 Head Removal/Engine Restoration
Replies
490
Views
67K
OctaneRider03
OctaneRider03
B
Supercharged Trailblazer 4200 I6
Replies
233
Views
57K
Nexus1155
N
Canary2323
Mix dex cool with green antifreeze?
Replies
19
Views
41K
gmcman
gmcman
B
4WD Service Light - C0379 Code
Replies
10
Views
39K
MaxiVI
M
Malo
Help with code P0410 on a 2005 trailblazer
Replies
12
Views
38K
Mooseman
Mooseman
2
SOLVED! Higher LTFT at idle and higher at rpms
Replies
76
Views
35K
mrrsm
mrrsm
PBoneBallSack
2003 Envoy SLT I6 4.2 - Transmission Fluid & Filter Change
Replies
13
Views
34K
playstrings
P
S
Code p0756 loss of power in first I changed shift solenoids no change. need advise.
Replies
16
Views
33K
Reprise
Reprise
mrrsm
ENGINE SWAP: 2004 for 2002 GM ATLAS 4.2L MOTOR
Replies
168
Views
31K
mrrsm
mrrsm
C
2006 trailblazer removing engine-getting to transmission housing bolts?
Replies
8
Views
30K
dfc739
dfc739
holytornado84
Rough idle and knocking noise from bottom of motor
Replies
196
Views
29K
holytornado84
holytornado84
Ric_Whit
Replacing Crankshaft Front Seal [SOLVED]
Replies
106
Views
28K
richphotos
R
WeaponX
Transmission fluid into oil to clean lifters and stopping the knock?
Replies
10
Views
28K
littleblazer
littleblazer
M
P1482 Code- AFTER replacing Clutch fan
Replies
10
Views
25K
filthyfingers
filthyfingers
2
2003 trailblazer ext wont move when engaged in drive or reverse
Replies
10
Views
25K
mrrsm
mrrsm
S
Spark plug torque
Replies
20
Views
25K
seanpooh
seanpooh
J
Scraping/grinding front differential noise
Replies
7
Views
23K
Mooseman
Mooseman
R
Thoughts on Lucas transmission stop slip?
Replies
10
Views
21K
DocBrown
DocBrown
G
SOLVED! Cranks but won't start after driving.
Replies
64
Views
21K
GBOfan
G
coolride
SOLVED! Grinding in the front right.
Replies
125
Views
20K
coolride
coolride
D
Vibration / shake when shutting off... WTF?
Replies
17
Views
20K
AzTruckGuy
AzTruckGuy
Z
4.2 vs 5.3...hear me out.
Replies
72
Views
20K
ZR2Trailblazer
Z
S
Flickering Head lights and dome lights with engine running
Replies
11
Views
20K
georgel
G
C
Replacing transmission lines
Replies
10
Views
19K
JerryIrons
J
H
NEED HELP Trailblazer Overheating / Coolant
Replies
19
Views
18K
mrrsm
mrrsm
SLiNv_Vic
NEED HELP DEXRON VI Mixed with Nasty Old DEXRON III?
Replies
15
Views
17K
mrrsm
mrrsm
HizAndHerz
NEED HELP Flex plate cracked: do I need to pull transmission?
Replies
51
Views
15K
HizAndHerz
HizAndHerz
06TrailblazerLSS
Coolant burning/boiling type smell, everyone once in a while.
Replies
53
Views
15K
C-ya
C-ya
gkrenzer
gas smell
Replies
18
Views
15K
Matt
Matt
J
Metal on metal grinding noise, louder on right curve/turn
Replies
26
Views
15K
jemmie
J
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