This Seirra has 47,000 original miles. It has a 305 with a 700r4 transmission. It was all original until I did the following modifications, replaced the manifold with an [COLOR=blue! important][COLOR=blue! important]Edelbrock[/COLOR][/COLOR] Peformer, installed 60,000 volt distributor, installed headers.
Since these modifications my transmission slips while shifting into 2 & 3rd when excellerating to fast, after shifting it works fine and doesn't slip. It will shift fine if I let up on the [COLOR=blue! important][COLOR=blue! important]gas[/COLOR][/COLOR] as I reach the shift point.
Could any of my modifications cause the problem or is the [COLOR=blue! important][COLOR=blue! important]transmission[/COLOR][/COLOR] having problems

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I would say that for the age of the vehicle, getting some more power might be the culprit. But Idk...
2000 Sierra ext. cab
5.3, auto, power everything, Pioneer AVH-2300DVD, Kenwood door speakers, 2-10" MA Audio subs, eBay cai, 1 chamber eBay muffler exiting before tire, 245/75 16 Wrangler Armortracs, 6500k HIDs with relay kit
1995 Cheyenne C1500 ext. cab(my baby, my first truck)
5.0, 5 speed, Silverado appearance package, power nothing, bucket seats and console Silverado, painted black interior, eBay halo headlights, eBay chrome tails, eBay cai, dual Flowmaster 40's w/no cats, 15x7 American Racing Hopsters, Walmart fog lights, SS mirrors


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2010 Z/71 Colorado C/C
Black 4X4 w/5.3L V8
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2007 Winnebago Adventurer
w/8.1L Chevy & Allison 6spd.
Canyon Lake, Texas

Welcome to the site!!!!!!
BRYAN
"IF YOU DON'T TREAT IT LIKE A TRUCK IT'S JUST A REALLY BIG CAR"
02' Avalanche 2500 Onyx Black
8.1L Vortec
43,000 miles

Welcome to the site! Got any pics of the Sierra? Post em up if you do
2003 Silverado 1500
V8 4.8L 294ci
2 inch Pro Comp Leveling Kit
3 inch Rough Country Lift
33 inch Nitto Terra Grapplers
5% Tint All Around
2 12" Kenwoods


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Bobby - North Carolina
2008 4x4 5.3L V8
6" Suspension Lift and 1.5" Body Lift
20x9 Ballistic Jesters w/35" Toyo Open Country MT's
4:56 Yukon Gears
Hypertech Speedometer Calibrator
Baja style bed mount spare tire carrier
Flowmaster 40 series dual exhaust
Recon Smoked LED tails and 3rd brake lights
N-Fab Nerf Steps
K&N CAI
No Fear Pedals
Tint, Line-X bedliner, Window visors, Rear wheel well liners
Painted front grill, bow ties and door badges, de-"lettered" tailgate
Powder coated front and rear bumpers
Welcome to the GMTC from Vancouver,WA!!
Marty-Vancouver, WA
04 Tahoe 5.3L
48 Chevy Coupe 5.7L
04 Sierra Denali 6.0L
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2003 Z71 Silverado LS
Access roll up cover
Bed Rails
Billet Grill insert
Bed Rug
CB with PA system
Waiting to be installed
Two 8in RF HX2 punch( would have 12s but they got stolen)
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