Vortec 4.2L I-6

Shdwdrgn
Help diagnosing an engine rattle?
Replies
13
Views
706
Shdwdrgn
Shdwdrgn
A
NEED HELP Belt Tensioner?
Replies
14
Views
1K
Realism
Realism
Realism
FIXED. Random P0300 misfire gremlin
Replies
9
Views
685
Realism
Realism
jak03TB
SOLVED! replacement cat
Replies
20
Views
1K
Realism
Realism
BlueDazing
NEED HELP 2002 Chevy Trailblazer no crank
Replies
158
Views
8K
TJBaker57
TJBaker57
Drec
NEED HELP Looking for info on testing COP, good ohm range
Replies
1
Views
344
TJBaker57
TJBaker57
T
NEED HELP After putting in new rebuild 4.2 Envoy can't get it to start up.
Replies
7
Views
602
azswiss
azswiss
A
NEED HELP Clean Throttle & MAF Sensor... Still Rough at Idle...
Replies
8
Views
728
mrrsm
mrrsm
T
SOLVED! 4.2L LL8 Harmonic Balancer Removal/Installation
Replies
18
Views
10K
KWG2005
K
K
Which way do the main bearings go on 4.2?
Replies
25
Views
1K
mrrsm
mrrsm
S
There really are two front main seals?
Replies
10
Views
3K
KWG2005
K
JayArr
Weird Cooling problem
Replies
30
Views
1K
JayArr
JayArr
E
2005 Envoy Cranks will not start.
Replies
5
Views
505
Envoywarrior
E
S
HVAC Blend door actuator malfunction
Replies
4
Views
1K
sweettsinger
S
A
NEED HELP Manually Adjust Transfer Case Position?
Replies
21
Views
2K
AC75TB07
A
J
4.2 timing chain
Replies
31
Views
4K
mrrsm
mrrsm
S
Timing chain concern delaying cylinder head repair
Replies
41
Views
5K
mrrsm
mrrsm
Daniel644
Stuff on the Screens
Replies
10
Views
743
Daniel644
Daniel644
W
2008 Trailblazer O2 Sensor Success, Rust Belt
Replies
11
Views
1K
Brian K
B
6716
I may have found the source of the misfire
Replies
19
Views
3K
6716
6716
I
Is my engine knocking?
Replies
20
Views
1K
Aroc
Aroc
S
blend door actuator malfunction
Replies
2
Views
576
Mooseman
Mooseman
S
NEED HELP difference between a 2005 4.2l and a 2006 4.2l short block
Replies
2
Views
605
Mooseman
Mooseman
jmonica
O2 Sensor little to no voltage Bank 1 Sensor 1
Replies
5
Views
1K
jmonica
jmonica
jmonica
Call for help PLEASE Any other stuck O2 Sensor Suggestions?
Replies
10
Views
779
gmcman
gmcman
S
NEED HELP 02 Envoy cooling issues
Replies
7
Views
787
Scooter72
S
Elizabetty
Steering wheel theft deterrent lock burning hot
Replies
11
Views
2K
RmbrNoel03EXT
R
stvrob
NEED HELP Oil Pressure guage drops to zero (sometimes) during idle
Replies
5
Views
625
TJBaker57
TJBaker57
jmonica
Coolant pouring out of reservoir when trying to fill
Replies
3
Views
400
Blckshdw
Blckshdw
S
SOLVED! So begins my P0171 journey.
Replies
6
Views
784
sashainwy
S
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