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Engine Performance + Maintenance
If it's under the hood, its in here.
96+ Vortec Performance + Computer Swaps
If you want to do the 0411 PCM swap or have a 1996+ Vortec motor this is your forum!
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18.5K
Threads
1.2K
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18.5K
12200411 PCM swap for 1996 to 2000 GMT400 trucks
55 minutes ago
pl813239
LSX + Carb Swaps
This section is for info on LSX or carburetor swaps into the OBS trucks.
Threads
629
Messages
7.8K
Threads
629
Messages
7.8K
J
Carb swapped ‘97 vortec - SUCCESS!!!
Monday at 2:25 PM
jockito
Exhaust
Anything exhaust - from headers cats and pipes to tips.
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1.1K
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13.7K
Threads
1.1K
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13.7K
Long tubes
Yesterday at 11:36 AM
revmatcher
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454s - What kind of MPG are you getting?
my name is alex
Dec 19, 2014
2
3
Replies
23
Views
6K
Dec 28, 2014
my name is alex
How do I flush my cooling system?
98sierra4x4
Dec 27, 2014
Replies
3
Views
2K
Dec 28, 2014
98sierra4x4
Whats a good replacement radiator?
98sierra4x4
Dec 21, 2014
Replies
6
Views
1K
Dec 28, 2014
98sierra4x4
What do I need to replace my cracked radiator?
98sierra4x4
Dec 28, 2014
Replies
0
Views
493
Dec 28, 2014
98sierra4x4
Changed fuel pump and sending unit. Now no fuel gauge....
TerryH
Dec 27, 2014
Replies
2
Views
830
Dec 28, 2014
twomanymontes
S
Loose belt?
Smitty1021
Dec 23, 2014
Replies
5
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1K
Dec 24, 2014
twomanymontes
E
Engine Compartment light
eg30.06
Dec 23, 2014
Replies
8
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2K
Dec 24, 2014
eg30.06
E
9
5.7 vortec issues, any ideas?
97Obs
Dec 23, 2014
Replies
1
Views
650
Dec 24, 2014
skylark
Where is my coolant going?
98sierra4x4
Dec 20, 2014
Replies
8
Views
850
Dec 23, 2014
98sierra4x4
L
New Motor for the 1994 GMC Yukon
lvz2ryd
Dec 23, 2014
Replies
4
Views
819
Dec 23, 2014
96C1500
High idle help.
kidd666
Dec 1, 2014
Replies
8
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1K
Dec 22, 2014
kidd666
Need help finding a new radiator
A_RYK
Oct 27, 2014
2
Replies
14
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2K
Dec 22, 2014
89-Z71
Oil pressure
98sierra4x4
Dec 21, 2014
Replies
2
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584
Dec 21, 2014
98sierra4x4
W
1997 yukon walbro 255
WETPAINTYUKON
Dec 21, 2014
Replies
1
Views
701
Dec 21, 2014
Big2500Red
B
1997 5.7 4l60e bad highway miss and huge clunk. MAF reads 0
94Sierra4x4
Dec 15, 2014
Replies
9
Views
2K
Dec 20, 2014
94Sierra4x4
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