Diagram of thermostat location on 2004 Chevrolet

i hope this helps for the water pump. The thermostat is located at top of engine simply follow upper hose to engine and remove housing and replace thermostat.

Here's a Autozone repair guide showing your your CPS. SAVE 20 GET 10 GIFT CARD ON ONLINE SHIP TO HOME ORDERS OF 100 OR MORE HERE'S ANOTHER LINK TO WHAT IT LOOK'S LIKE. http://www.autozone.com/engine-management/crankshaft-position-sensor/duralast-crankshaft-position-sensor/chevrolet/hhr/2006/4-cylinders-p-2-4l-sfi-dohc/793842_726118_0

On your intake manifold, #3 in diagram. My info showed two wires, one is gray, the other is orange with black tracer.

For the 3.0 ohv engine follow the upper hose the the housing on the intake manifold. It will be behind that housing. On the 3.0 DOHC engine. Follow the lower hose to the water outlet housing. The thermostat will be behind that housing.

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Just follow the upper radiator hose from the radiator to the engine, where is connects to the engine remove the hose and the cover under it to expose the T-Stat. Drain about 1/2 gallon of coolant out before you start work. Bleed the air from the cooling system (refer to service manual for this year and engine type) after the T-Stat is replaced to prevent poss overheating.

Whether your Malibu is:
(a) 4 cylinder 2.4L SFI DOHC Vin "T", or
(b) 6 cylinder 3.1L SFI OHV Vin "M"

SFI = fuel injected
DOHC = dual overhead camshaft
OHV = overhead valves
Vin = 17-digit unique car identifier - the 8th digit identifies the engine (not the transmission), and
as you can see, your engine will be identified by the 8th digit = "T" or "M"

your car has the Chevrolet 4T40E automatic transmission (aka "automatic transaxle")
Here are some specifications:

is it dohc or ohv? this is for the 2.2 ohv easy to do. and I would replace the tensioners and guides while i was at it. will save your time and money to keep from tearing back into it. but 9 out of 10 they are why you are tearing into it anyways,

On 3.0L OHV engines, the oil pressure sensor is located on the left side of the engine block above the flywheel. On 3.0L DOHC engines the sensor is located on the left side of the engine block above the oil filter. On 3.4L DOHC engines the sensor is screwed into the oil filter adapter. The oil pressure sensor operates the oil pressure warning lamp.


Fig. 1: Location of the oil pressure sensor-3.0L OHV engines


Fig. 2: Location of the oil pressure sensor-3.0L DOHC engines



Fig. 3. The oil pressure sensor-3.0L OHV engine

Hope help with this (remember rated this help). Good luck.

thermostat is located at the end of the lower radiator hose, not the upper like most vehicles. Remove the two bolts (most likely 10mm, you'll need a deep socket 10mm) then the housing. The thermostat is in the housing. remove and replace with a new one.

If it's a V6 then it would be a Double Over Head Cam... Thermostat will be on top of engine where coolant outlet to upper hose is located... Hope this helps...;-)