Vortec 4.2L I-6

S
SOLVED! So begins my P0171 journey.
Replies
6
Views
780
sashainwy
S
S
Fuel pump access panel
Replies
10
Views
2K
Stuntmanmike1977
S
S
old radiator cap leaks, replaced, new one leaks occasionally
Replies
12
Views
2K
sashainwy
S
jmonica
O2 Sensor little to no voltage Bank 1 Sensor 1
Replies
5
Views
1K
jmonica
jmonica
S
NEED HELP 02 Envoy cooling issues
Replies
7
Views
765
Scooter72
S
jmonica
Coolant pouring out of reservoir when trying to fill
Replies
3
Views
391
Blckshdw
Blckshdw
jmonica
Call for help PLEASE Any other stuck O2 Sensor Suggestions?
Replies
10
Views
744
gmcman
gmcman
stvrob
NEED HELP Oil Pressure guage drops to zero (sometimes) during idle
Replies
5
Views
612
TJBaker57
TJBaker57
I
Is my engine knocking?
Replies
20
Views
1K
Aroc
Aroc
S
NEED HELP difference between a 2005 4.2l and a 2006 4.2l short block
Replies
2
Views
586
Mooseman
Mooseman
S
blend door actuator malfunction
Replies
2
Views
564
Mooseman
Mooseman
Daniel644
Stuff on the Screens
Replies
10
Views
711
Daniel644
Daniel644
JayArr
P0135
Replies
29
Views
1K
JayArr
JayArr
JayArr
Weird Cooling problem
Replies
30
Views
1K
JayArr
JayArr
A
NEED HELP Manually Adjust Transfer Case Position?
Replies
21
Views
2K
AC75TB07
A
A
NEED HELP Belt Tensioner?
Replies
14
Views
968
Realism
Realism
E
2005 Envoy Cranks will not start.
Replies
5
Views
491
Envoywarrior
E
jak03TB
SOLVED! replacement cat
Replies
20
Views
1K
Realism
Realism
S
2005 TB 4.2L engine noise
Replies
10
Views
910
azswiss
azswiss
K
Which way do the main bearings go on 4.2?
Replies
25
Views
1K
mrrsm
mrrsm
A
NEED HELP Clean Throttle & MAF Sensor... Still Rough at Idle...
Replies
8
Views
705
mrrsm
mrrsm
T
NEED HELP After putting in new rebuild 4.2 Envoy can't get it to start up.
Replies
7
Views
582
azswiss
azswiss
Shdwdrgn
Help diagnosing an engine rattle?
Replies
13
Views
670
Shdwdrgn
Shdwdrgn
Drec
NEED HELP Looking for info on testing COP, good ohm range
Replies
1
Views
333
TJBaker57
TJBaker57
Mike534x
P0325 - Which knock sensor is the culprit?
Replies
25
Views
1K
Mike534x
Mike534x
Petnatcar
2005 4.2 P0455 Code
Replies
13
Views
820
Petnatcar
Petnatcar
Realism
FIXED. Random P0300 misfire gremlin
Replies
9
Views
659
Realism
Realism
G
NEED HELP 4.2 cylinder sleeve replacement
Replies
40
Views
2K
mrrsm
mrrsm
B
Lost compression cylinder four
Replies
5
Views
662
boredwild
B
J
SOLVED! Alternator not charging
Replies
3
Views
553
joe mama
J
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