Vortec 4.2L I-6

M
SOLVED! RPM Drop On Acceleration.
Replies
25
Views
19K
Mektek
M
BlazingTrails
How To - Replace Broken Vent Valve in the fuel tank!! P0445
Replies
15
Views
18K
Staboogie031
S
yazan
does ignition switch cause transmission problems?
Replies
15
Views
18K
Drake314
Drake314
05EnvoyXL
Clicking noise in engine....fan clutch??
Replies
42
Views
18K
meerschm
meerschm
M
P1133 Upstream O2 Sensor Diagnostics
Replies
43
Views
18K
bobdec
B
S
P0171
Replies
21
Views
18K
mrrsm
mrrsm
C
Unplugged Oil Pressure Switch
Replies
26
Views
18K
AtlWrk
AtlWrk
thisguy1985
fuel pressure? key on, engine off
Replies
8
Views
18K
thisguy1985
thisguy1985
S
Oil Catch Can for 4.2 PCV system
Replies
29
Views
17K
Capote
Capote
R
Horrible gas mileage.
Replies
20
Views
17K
Mark20
Mark20
dvs.dave.03ltz
NEED HELP Wont start after engine swap
Replies
56
Views
17K
dvs.dave.03ltz
dvs.dave.03ltz
limequat
4200 Turbo Supra
Replies
94
Views
17K
limequat
limequat
AzTruckGuy
  • Locked
Back to bad MPG heat range causing it?
Replies
183
Views
17K
Sparky
Sparky
F
oil everywhere
Replies
38
Views
17K
AbsoluteZero
A
R
Which spark plug for 05 trailblazer.
Replies
9
Views
17K
KNBlazer
KNBlazer
xz5cgb
'05 TB 4.2L Coolant leak on R/H side behind wheel well
Replies
12
Views
16K
Alec Venable
Alec Venable
B
What is stock exhaust size on the i6?
Replies
16
Views
16K
Cable810
Cable810
Snailblazin'
Possible turbo kit??
Replies
27
Views
16K
Snailblazin'
Snailblazin'
Goodfella
4.2 mysterious knock HELP!
Replies
48
Views
16K
limequat
limequat
Z
Knocking noise at idle
Replies
67
Views
16K
CaptainXL
C
Shdwdrgn
DIY air intake with IAT sensor
Replies
76
Views
16K
ShadowClutch
S
mrrsm
"The GM Vortec LL8 Links and Specs Library"
Replies
3
Views
16K
ToddTNP
ToddTNP
Kurb
Oxygen Sensor Threads Stripped
Replies
17
Views
16K
Kurb
Kurb
C
P0300 / Rough Idle / Gas Smell
Replies
24
Views
15K
ComputernerdBD
C
Ace1875
Fuel pressure regulator vacuum.
Replies
24
Views
15K
Ruben F Quingalahua
Ruben F Quingalahua
marinegrunt
Low Oil Pressure (shut down engine)
Replies
22
Views
15K
BanditGTP
BanditGTP
T
Yet another P1345...2002 Trailblazer
Replies
27
Views
15K
Mooseman
Mooseman
D
SOLVED: P1516 06 4.2 ls trailblazer
Replies
17
Views
15K
DirtinLa
D
T
Could it be an intake manifold leak?
Replies
50
Views
15K
TripleBuick
T
KNBlazer
P1680 diagnostic
Replies
19
Views
15K
Reprise
Reprise
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