How to disconnect and replace the exhaust manifold in six cylinder engine on Chevrolet Trailblazer?

Disconnect the cable from the negative terminal of the battery, then raise the vehicle and support it securely on jackstands. While working under the vehicle, apply penetrating oil to the exhaust pipe-to-manifold studs and nuts, allowing it to soak in before removing the nuts that retain the exhaust pipe to the manifold. Unplug the oxygen sensor electrical connector, remove the heat shield nuts, and take off the heat shield. Next, remove the exhaust manifold bolts to detach the manifold from the cylinder head, followed by removing the exhaust manifold gasket and cleaning the mating surfaces on both the cylinder head and manifold. Check the manifold for cracks and ensure the bolt threads are clean and undamaged, using a gasket scraper to eliminate all carbon deposits. Verify the manifold for warpage with a straightedge and feeler gauges; if it exceeds the limit, resurface it or replace it. Install a new gasket, then place the manifold on the cylinder head, applying heat-resistant thread locking compound to the bolt threads and starting the bolts by hand. Tighten the bolts in three passes, beginning from the center and moving to the ends, to the specified torque. Complete the remaining installation steps in reverse order, then start the engine and check for exhaust leaks.

Genuine Chevrolet Trailblazer Exhaust Manifold

Engine Exhaust Manifold

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Chevrolet Trailblazer Engine Exhaust Manifold
Part Number: 12600527
$130.86 MSRP: $195.23
You Save: $64.37 (33%)
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Product Specifications
- Other Name: Manifold, Exhaust ; Manifold, Engine Exhaust Manifold; Exhaust Manifold, Manifold
- Replaces: 12567484
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2003-2009 Chevrolet Trailblazer | 4 DOOR, 4 DOOR EXT | 8 Cyl 5.3L, 8 Cyl 6.0L
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Chevrolet Trailblazer Engine Exhaust Manifold Assembly
Part Number: 12587310
$195.97 MSRP: $309.73
You Save: $113.76 (37%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Manifold Assembly, Exhaust ; Manifold, Engine Exhaust Manifold; Exhaust Manifold, Manifold
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2007 Chevrolet Trailblazer | 4 DOOR, 4 DOOR EXT | 6 Cyl 4.2L
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Chevrolet Trailblazer Engine Exhaust Manifold Kit
Part Number: 88890560
Product Specifications
- Other Name: Manifold Kit,Exhaust ; Manifold, Engine Exhaust Manifold; Exhaust Manifold, Manifold
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2005 Chevrolet Trailblazer | 4 DOOR, 4 DOOR EXT | 6 Cyl 4.2L
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Chevrolet Trailblazer Engine Exhaust Manifold
Part Number: 12600526
$112.68 MSRP: $178.09
You Save: $65.41 (37%)
Product Specifications
- Other Name: Manifold, Exhaust ; Manifold, Engine Exhaust Manifold; Exhaust Manifold, Manifold
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2003-2009 Chevrolet Trailblazer | 4 DOOR, 4 DOOR EXT | 8 Cyl 5.3L, 8 Cyl 6.0L
View related parts
Chevrolet Trailblazer Engine Exhaust Manifold Assembly
Part Number: 12637060
$172.75 MSRP: $273.05
You Save: $100.30 (37%)
Product Specifications
- Other Name: Manifold Assembly, Exhaust ; Manifold, Engine Exhaust Manifold; Exhaust Manifold, Manifold
- Replaces: 12597166
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008-2009 Chevrolet Trailblazer | 4 DOOR | 6 Cyl 4.2L

Chevrolet Trailblazer Exhaust Manifold

Chevrolet Trailblazer automobile's Exhaust Manifold is very vital in channeling hot exhaust gases from the motor to the exhaust system for better performance of the engine and decreased emission of dangerous gases. Sitting in different places depending on the engine configuration, manifold is usually made of cast iron or stainless steel consisting of multiple tubes equal to the number of cylinder of the engine. In the course of the usage of the Chevrolet Trailblazer, varying types of Exhaust Manifold have been applied with the options being typical manifold or headers. However, where conventional manifolds aim at housing the exhaust gases, headers provide less restriction while increasing the velocity of the gas thereby offering greater efficiency to the engine. Cohesive Exhaust Manifolds are crucial for adequate, air-to-fuel mixture and for avoidance of unhealthy exhaust fumes infiltrations into the passenger compartment, thus, passengers' health.

Each OEM Chevrolet Trailblazer Exhaust Manifold we offer is competitively priced and comes with the assurance of the manufacturer's warranty for the part. Furthermore, we guarantee the speedy delivery of your orders right to your doorstep. Our hassle-free return policy is also in place for your peace of mind.

Chevrolet Trailblazer Exhaust Manifold Parts Questions & Experts Answers

Engine Exhaust Manifold Assembly
12587310
Q: How to disconnect and replace the exhaust manifold in six cylinder engine on Chevrolet Trailblazer?
A: Disconnect the cable from the negative terminal of the battery, then raise the vehicle and support it securely on jackstands. While working under the vehicle, apply penetrating oil to the exhaust pipe-to-manifold studs and nuts, allowing it to soak in before removing the nuts that retain the exhaust pipe to the manifold. Unplug the oxygen sensor electrical connector, remove the heat shield nuts, and take off the heat shield. Next, remove the exhaust manifold bolts to detach the manifold from the Cylinder Head, followed by removing the exhaust manifold gasket and cleaning the mating surfaces on both the cylinder head and manifold. Check the manifold for cracks and ensure the bolt threads are clean and undamaged, using a gasket scraper to eliminate all carbon deposits. Verify the manifold for warpage with a straightedge and feeler gauges; if it exceeds the limit, resurface it or replace it. Install a new gasket, then place the manifold on the cylinder head, applying heat-resistant thread locking compound to the bolt threads and starting the bolts by hand. Tighten the bolts in three passes, beginning from the center and moving to the ends, to the specified torque. Complete the remaining installation steps in reverse order, then start the engine and check for exhaust leaks.