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Various HHR Sub Installs...
(
1
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3
...
Last Page
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SoCalHHR
on Jul 25, 2006
Jun 29, 2022
11:02 PM
by
PulpFriction
342
400,204
Sticky
How to hook up an amp and sub-woofer setup without affecting the existing Premium sys
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1
2
3
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Last Page
)
Kaladon
on Oct 4, 2007
Jan 2, 2020
11:59 PM
by
OshawaHHRss
48
70,637
Normal Threads
n3d to replace 07stereo with 2010 stereo but it is locked and needs some sort of code
Zoes07hhr
on Mar 5, 2026
Mar 6, 2026
07:11 AM
by
Oldblue
3
144
Antenna mount and antenna
(
1
2
)
BrokenHHR
on Jul 20, 2015
Feb 10, 2026
06:35 AM
by
Oldblue
12
13,841
Unhook the Stock Sub Woofer ???
(
1
2
3
)
Silverfox
on Aug 18, 2012
Feb 7, 2026
09:01 AM
by
Oldblue
24
6,787
Anyone have experience with adding the non-Onstar factory XM module to a base radio?
(
1
2
)
Houdoxi71
on Jan 1, 2026
Feb 7, 2026
07:54 AM
by
Oldblue
17
811
OnStar 2G support ending - handsfree options.
(
1
2
)
rblt
on Jul 15, 2014
Dec 25, 2025
12:54 PM
by
CJ47
15
7,383
After Market Radio Failure Install
Calyp.so
on Nov 25, 2025
Nov 25, 2025
10:20 PM
by
donbrew
5
762
Wiring diagram?
Mercury
on Jul 16, 2015
Oct 18, 2025
07:55 AM
by
donbrew
9
84,870
08hhr add aftermarket amp to existing factory stock amp
1ZZ
on Jun 8, 2025
Jun 8, 2025
10:45 AM
by
RJ_RS_SS_350
2
1,341
Big 3 Upgrade! HELP!
(
1
2
)
Sully857
on Apr 13, 2025
Apr 15, 2025
12:19 PM
by
PulpFriction
10
2,117
Help with Stereo, 2010 LT HHR
(
1
2
)
RedSkies@Nite
on Dec 16, 2024
Mar 30, 2025
11:31 AM
by
RedSkies@Nite
15
1,951
Help with installing an LOC with the stock pioneer system.
(
1
2
)
ZeroTwo
on Mar 18, 2025
Mar 30, 2025
08:39 AM
by
PulpFriction
18
1,457
2010 2.2L need help with something.
(
1
2
)
ThisIsHHRd
on Feb 25, 2025
Feb 26, 2025
01:17 PM
by
Oldblue
10
1,071
I'm installing Auto-Vox CS-2 X in a 2011
bookdoug
on Feb 15, 2025
Feb 17, 2025
08:09 AM
by
Oldblue
6
760
Need help with new stereo please
Pmb1903
on Jan 28, 2025
Jan 30, 2025
01:05 AM
by
PulpFriction
6
1,682
New radio system stopped working
paddywagon09
on Dec 21, 2024
Dec 21, 2024
08:48 AM
by
donbrew
4
1,091
Swapping radio
(
1
2
)
dragonscars
on Nov 24, 2024
Dec 2, 2024
04:19 PM
by
firemangeorge
13
2,368
antenna mast cover?
beachbumtroy
on Oct 11, 2024
Oct 12, 2024
12:22 PM
by
Oldblue
5
1,102
This guy bolted the door for better bass :/
hhrumadbruh
on Sep 2, 2024
Sep 3, 2024
08:11 AM
by
Oldblue
2
1,007
Aftermarket Radio/Head Unit
(
1
2
)
rwfnetworking
on Aug 5, 2024
Aug 25, 2024
08:57 AM
by
Vinnybagodoughnuts
14
2,608
Aftermarket stereo issue!!!
matthhen
on Aug 24, 2024
Aug 25, 2024
08:04 AM
by
matthhen
4
1,009
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