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In my Chevy 1500 with the 305 Vortec, the problem was the lower intake manifold gasket, which is the one that seals it to the engine block. On your 3800 V6 (in a Silverado? I didn't know that; I thought it was the 4.3, maybe it's an older or newer year than my body style), it could very well be the same. There is also a coolant line coming out of the manifold, if I'm not mistaken. Could be to the thermostat, but I don't have the truck anymore. To the best of my knowledge, that would be the easiest and cheapest thing to check.
What else can I help you with?
How do you replace the water heater inlet pipe on the intake manifold on a 3800 buick lesabre?
replace the water heater inlet pipe on the intake manifold on a 3800
Dexcool and a Chevrolet 3800 V6?
What was the situation with DexCool and the Chevrolet 3800 series II engine and how do i get the replacement intake manifold from Auto-zone and what is the part #
How long does it take to change an intake manifold gasket on a 3800?
Several manufacturers built 3800. Without that information no answer can be given
How to replace intake manafold on V6 3800 engine?
Ineed the torque sequence and tightening specs for a 92 GM 3800 intake.
Where are the Pontiac 3800 series 1 supercharged engine sensor locations?
This question references General Motors built FWD vehicles with the 3800 Series supercharged engines. Sensors included the O2s in the exhaust manifold and the downstream of the catalytic converter pipe. knock sensors in the block, and the manifold absolute pressure sensors in the intake manifold.
What gaskets will you need to repair a coolant leak coming from the intake manifold on a 1996 Camaro 3800 V6?
You will need a intake manifold set and possibly a plenum gasket set.
Why is Fluid inside inlet manifold?
If it is a gm 3800 you need to replace the upper intake. It has a crack in it.
How do you install a supercharger on a stock series 2 3800?
To install a supercharger on a stock Series II 3800 engine, start by gathering the necessary components, including the supercharger kit, mounting brackets, intake manifold, and any required gaskets. Remove the existing intake manifold and components to access the engine block. Follow the kit instructions to mount the supercharger, ensuring proper alignment and securing all connections. Finally, reassemble the intake system, check for any leaks, and tune the engine for optimal performance.
PCV valve location on 1988 Oldsmobile 88 3800?
front side of plastic intake manifold
How do you replace an intake manifold gasket on a 96 Firebird 3800 6 cylinder?
Bend over the mechanics counter.
Where is MAP sensor on 97 firebird 3800 v-6?
The Manifold Absolute Pressure (MAP) sensor is located near the throttle body on the intake manifold.
Where is the egr valve located on a 3800 series gm v6 engine?
behind the throttle body...it looks like a motor facing downward toward the exhaust manifold. it connects the tube from the exhaust to the lower intake.
