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What is the bolt pattern for the intake manifold for the gmc 1991 sierra

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You mean the sequence in torquing the bolts down? If so criss cross from the inside towards the outer ones

Posted on Aug 30, 2010

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Gmc sierra problems


Now check if the vacuum operated doors work when you command various vents. There should be a vacuum line from the intake manifold that goes through the firewall and into a pod-like device on the back of the controls. From there vacuum lines run to the various doors. See if you still have a vacuum signal from any of them.

Sep 02, 2014 | 1991 GMC Sierra

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Where is the egr valve located on my 1995 gmc sierra 1500 4.3 eng?


The EGR is typically put behind and under the air cleaner on the passenger side, it is between the distributor and the throttle body. The EGR is mounted to the intake manifold by two bolts and remove the rubber vacuum line.
Must use correct sealing gasket.

Jun 14, 2014 | 1995 GMC Sierra C1500

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Can't find the torque head bolt pattern for a 1996 gmc sierra 5.7 vortex


The "pattern" for ANY cylinder head is pretty much the same...start with the bolts in the center of the head and work your way out to both ends.
Torquing the cylinder head on your 5.7L Vortec engine to manufacturer specifications requires the use of a "torque angle" gauge, as well as a traditional torque meter.

The torque specifications are as follows:

> Step 1: All bolts: 22 Ft Lbs (30 Nm.)
> Step 2: Short bolts: Additional 55 degrees; Medium bolts: Additional 65 degrees; Long bolts: Additional 75 degrees

May 20, 2012 | GMC Sierra 1500 Cars & Trucks

1 Answer

Losing coolant in my 2000 gmc sierra


These motors are famous for the intake manifolds leaking coolant.Have a pressure test put on the coolant system and look for a leak around the intake manifold corners.Check all four corners i've fixed many of these.

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1 Answer

Where is the coolant temp sensor go on a 1991 gmc sierra with a 305


It should be either in the thermastat housing or in the center intake manifold near it, if not in either of those 2 then check behind the exhaust manifold probably on the right side in the engine block look for a wire going down there to find it.

Mar 17, 2011 | 1991 GMC C1500

1 Answer

Intake manifold bolt pattern 1999 jimmy 4 by 4 i replaced the intake gasket my son did not use a bolt pattern o a tork wrench it leaks at the back under side


Remove the manifold add sealant to both sides of the gaskett and tighten from the midlle outwards.touque is about 20LBSsqinch.That should work fine

Jan 12, 2011 | 1999 GMC Jimmy

1 Answer

Hot do you take off a 98 GMC 5.7 vortec intake


Note, removing the upper intake manifold is not necessary when removing lower intake manifold, they are removed as an assembly.
Disconnect negative battery cable. Drain cooling system. Remove air cleaner assembly and inlet duct. Mark and remove distributor. Remove upper radiator hose at thermostat housing. Disconnect accelerator and cruise control cables. Remove heater hoses from intake manifold. Remove EGR pipe.
Disconnect fuel lines at rear of engine. Remove AC compressor and set aside(leave hoses connected). Remove canister purge solenoid. Disconnect theSCPI injector, ignition coil, Ignition Control Module, generator,IAC motor, TP sensor, O2 sensor, Exhaust Gas Recirculation valve and Engine Coolant Temperature sensor wiring harness connectors. Remove PCV valve and hose. Remove lower intake manifold bolts. Remove lower intake manifold.
Installation.
Always use New O-rings when reconnecting fuel lines at rear of engine. Apply a bead of RTV silicone sealer along the front and rear sealing surfaces of the block.See Fig.6. Install new gaskets and intake manifold on block while RTV is still wet to the touch. Use Threadlock 12345382 or equivalent to lower intake manifold bolts. Tighten lower intake manifold bolts in sequence to specification table. See fig. 7. To complete installation, reverse removal procedure.f52665d.gifabc2b5f.gif

Oct 10, 2009 | 1998 GMC Sierra

2 Answers

Intake manfold leaking antfreez


Is it leaking between wear the head and intake mate together? If so you can try retorqing the bolts and see if it stops other wise you will have to replace the intake gasgets.

Sep 29, 2009 | 1997 GMC Sierra

1 Answer

I changed the intake manifold on my 1997 gmc safari van that has the 4.3L engine. Now the check engine light comes on. it puts out 3 codes ( po102 ) ( po300 ) and ( po507). What did i do wrong and where...


its soaking air somewere around the manifold make sure you thigten the bolts on the wight pattern if yoou dont know the pattern start from te center to the outside or reset the computer just unhooked the negative cable from the batery for 5 minutes,

Sep 26, 2009 | 1997 GMC Sierra

1 Answer

Intake to head bolt torque


Intake bolt torque is 11-14 foot pounds. Note:
to torque bolts & nuts, start in center using
crisscross pattern working outward. And as Far as the sealant goes, you shouldn't need any additional sealant since the new gasket has sealant.(just make sure both surfaces are clean an free of oil.) sometimes if the head or the block show signs of pitting on the matteing surfaces then you could use a litttle of that cooper spray gasket to coat the new gasket.

Feb 17, 2009 | 1991 GMC S-15 Jimmy

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