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'99 - '06 GM Truck Modifications
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Engine & Performance
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Engines, Engine mods, Chips, Filters, etc.
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Title
Napa MAF Problems?
Cadillacmak
Apr 18, 2025
Replies
7
Views
118
Saturday at 2:43 PM
ORVietVet
Tuning a 6.0
Cadillacmak
Jan 17, 2025
2
Replies
22
Views
704
Saturday at 1:17 PM
Cadillacmak
J
Headers that fit my '00 2500?
JCIII
Apr 7, 2025
Replies
8
Views
322
Apr 15, 2025
MultiVAC
M
Anyone used Hypertech programmer on 8.1?
Mitch1965
Mar 19, 2025
Replies
5
Views
294
Mar 31, 2025
stutaeng
8.1 super efan conversion
MultiVAC
Mar 16, 2025
Replies
4
Views
376
Mar 25, 2025
ORVietVet
E
Truck Norris cam and trailblazer i6 converter.
Eggman63
Mar 22, 2025
Replies
4
Views
262
Mar 23, 2025
DateNight
P
Coil wire harness.
Pauly1119
Mar 18, 2025
Replies
13
Views
348
Mar 21, 2025
stutaeng
A
Search for 90* Oe exhaust hanger Rod replacements factory diameter
Aaron81
Mar 19, 2025
Replies
4
Views
194
Mar 19, 2025
ORVietVet
0
Instrument panel, dimmer switch, hvac lights electrical issue
03_sierra
Mar 16, 2025
Replies
3
Views
199
Mar 16, 2025
ORVietVet
A
Looking for ideas and hanger options for a replacement muffler mid pipe and tail on my truck . Using 99-06 exhaust take off on my 93 Obs
Aaron81
Mar 15, 2025
Replies
1
Views
125
Mar 15, 2025
Cadillacmak
0
P0332/ P1516
03_sierra
Mar 14, 2025
Replies
2
Views
186
Mar 15, 2025
ORVietVet
E
1999 extended cab Silverado 4.8/4l60e
Ethan.jones01
Mar 8, 2025
2
Replies
20
Views
742
Mar 15, 2025
Ethan.jones01
E
C
P0200 and P0300 engine codes after Rear Main Seal repair.
Chevy Red Panda
Feb 25, 2025
Replies
9
Views
463
Mar 3, 2025
ORVietVet
Oil Analysis Choices
ORVietVet
Mar 2, 2025
Replies
3
Views
221
Mar 3, 2025
bigdogYJ
Fuel Pump Replacement
INW-Iron-Steel
Feb 25, 2025
Replies
13
Views
593
Feb 27, 2025
INW-Iron-Steel
Gauge cluster replacement...no sure where to post.
MikeP1969
Feb 1, 2025
2
3
4
Replies
75
Views
2K
Feb 26, 2025
Cadillacmak
This is a good watch for our GMT800 trucks
ORVietVet
Feb 13, 2025
Replies
13
Views
629
Feb 18, 2025
ORVietVet
J
4.3 no start
JMF97
Feb 10, 2025
2
Replies
34
Views
786
Feb 16, 2025
JMF97
J
What's your exhaust setup?
TooleyOnDeck
Feb 11, 2025
2
Replies
20
Views
920
Feb 13, 2025
INW-Iron-Steel
BlackBear Performance
ORVietVet
Jan 30, 2025
Replies
4
Views
372
Jan 30, 2025
Cadillacmak
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