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Hummer Forums - Enthusiast Forum for Hummer Owners
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Threads Tagged with
p0300
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Threads Tagged with
p0300
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Forum
2023 P0300 Code Engine mis-fire thread-2006 H2 6.0L
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1
2
3
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Last Page
)
LuvMy2006H2
on 11-09-2023
12-18-2023
08:31 AM
by
legerwn
62
3,049
Hummer H2
hummer h3 misfiring...?
yoH3
on 10-06-2023
10-11-2023
08:42 AM
by
Doc Olds
8
494
Hummer H3
Check Engine Light P0300 Cure
(
1
2
)
Bill_AK
on 12-10-2019
04-10-2021
08:34 PM
by
legerwn
12
6,963
Hummer H2
Random misfire code P0300? H2
pm1010
on 07-21-2012
09-20-2019
08:01 AM
by
madmayo
5
39,701
Hummer H2
7 Codes 2008 H3 with 84000 miles
Gunfighter13
on 12-02-2013
07-24-2014
10:26 PM
by
Happy Hummer
8
7,365
PRIVATE For Sale / Trade Classifieds
P0300 and P0305 Codes
(
1
2
3
)
norinco3264
on 04-21-2014
04-25-2014
05:51 PM
by
hummerz
20
32,483
PRIVATE For Sale / Trade Classifieds
There it is, P0300 code. Likely head #2 is bad.
larry0071
on 03-16-2014
03-29-2014
05:16 PM
by
larry0071
7
19,888
PRIVATE For Sale / Trade Classifieds
Sticky Poll
Exactly how many have had HEAD/Valve Problems
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1
2
3
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Last Page
)
Dennis
on 11-30-2006
12-17-2013
11:22 AM
by
keystone
245
71,937
Head and Valve Problems.
P0300 and P0128
(
1
2
)
Matthew C. Powell
on 01-06-2013
05-01-2013
01:06 PM
by
Xlr8n
12
14,046
PRIVATE For Sale / Trade Classifieds
2006 H3 p0300 code with freeze frame
alonna
on 03-19-2013
03-28-2013
04:21 PM
by
alonna
9
15,144
PRIVATE For Sale / Trade Classifieds
Potential H3 Owner
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1
2
3
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Last Page
)
LifeIsGood
on 01-04-2013
01-23-2013
03:44 PM
by
Doc Olds
30
14,280
PRIVATE For Sale / Trade Classifieds
P0017 & P0300 Codes
ericksos
on 12-18-2012
12-18-2012
11:59 AM
by
ericksos
0
9,205
PRIVATE For Sale / Trade Classifieds
p0300 code
H3I5
on 04-12-2012
04-27-2012
03:23 PM
by
H3I5
4
6,893
PRIVATE For Sale / Trade Classifieds
Fed up!
darnell72
on 02-12-2012
03-11-2012
12:10 AM
by
chesh97
5
3,460
PRIVATE For Sale / Trade Classifieds
Another dreaded code P0300
CJYork
on 10-22-2011
10-26-2011
09:09 PM
by
CJYork
8
35,739
PRIVATE For Sale / Trade Classifieds
p0300 random missfire
mrigor
on 07-29-2011
07-30-2011
01:39 AM
by
Muddydawg75
4
5,209
PRIVATE For Sale / Trade Classifieds
check engine light
roughneck1115
on 02-01-2011
02-06-2011
12:05 AM
by
TAINTER
6
2,660
PRIVATE For Sale / Trade Classifieds
DTC Code P0300 - Multiple Random Cyliner Misfire
Calgary
on 07-19-2007
07-31-2010
11:29 PM
by
Jkmako
1
15,265
PRIVATE For Sale / Trade Classifieds
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