What do I need to replace my GMC Sierra thermostat?
Because this guide focuses on replacing your Sierra thermostat, if you are still having overheating problems, check our guide on overheating GEN III engines, and how to troubleshoot overheating. To replace your 4.8 liter Sierra thermostat, you’ll need coolant as well as a 10mm socket and wrench.
Is there a service manual for a GMC Sierra?
GMC Sierra service repair manuals More relating to GMC’s… American drivers want power and capability when they’re buying a pickup truck. And when it comes to towing strength, American A Buick is a classic car choice that’s been on the market for over 100 years. If you’re looking to buy GMC trucks have a long and rich history.
Why does my GMC Sierra thermostat Read Hot?
There’s a wax thermal pellet incorporated inside your GM thermostat, and if that’s stuck closed the lower radiator hose will remain cool, even though your temperature meter reads hot. Because this guide is working on hot components and near your exhaust and cooling fan, if you are not comfortable working on your own vehicle, stop now.
What is the thermostat part number on a Sierra?
The part number for the factory thermostat for your Sierra is GM part number 12562740, 12571261, or 12562740. The temperature rating for these thermostats is 186 degrees, and that is the stock rating for your Sierra.
How do you change the thermostat on a GMC Sierra?
Install the new thermostat in same position as old one. Apply a sealant to the thermostat housing, the part you removed, and then the gasket as well. Reinstall the housing and tighten down bolts snugly. Torque them with your torque wrench.
How to identify Chevrolet GMC manual transmissions [ video ]?
After locating correct unit a link is supplied to provide detailed information on specific kit and parts that are available for your unit. Information is provided for General Motors 3 speed, 4 speed , 5 speed and 6 speeds manual transmissions. Cast iron case and extension housing with 4-bolt side cover.
What are the case numbers for a GMC manual transmission?
Case casting is number 13-53. All aluminum top-loaded transmission with shifter on top of the extension housing with internal single-rail shift linkage. Front and rear main bearings are tapered. The cluster gear is solid and is supported on each end by cylindrical roller bearings located in the case. Case castings numbers are 13-51 or 13-52.
What should the torque be on a GMC Sierra?
Torque them with your torque wrench. If your engine is one of the following then toque them to 21 ft lbs: 4.3L, 5.0L, or 5.7L. If your engine is a 7.4L then torque the bolts to 27ft lbs.
What happens when the thermostat on a GM 4.3L fails?
When the thermostat, in your GM 4.3L, 5.0L or 5.7L pick up, SUV, or van fails, it does one of two things: it stays stuck open or stuck closed. If it stays stuck closed, your pick up (van or SUV) will overheat.
What should the thermostat be on a Chevy Silverado?
Figure 1. Chevy Silverado thermostat and housing. Thermostats have a rated temperature listed on them. Most commonly, thermostats are rated at 180, 190, and 200 degrees Fahrenheit, which fully open about 20 degrees after its temperature rating. Common problems associated with thermostats is engine overheating or an engine that runs too cold.
Because this guide focuses on replacing your Sierra thermostat, if you are still having overheating problems, check our guide on overheating GEN III engines, and how to troubleshoot overheating. To replace your 4.8 liter Sierra thermostat, you’ll need coolant as well as a 10mm socket and wrench.
There’s a wax thermal pellet incorporated inside your GM thermostat, and if that’s stuck closed the lower radiator hose will remain cool, even though your temperature meter reads hot. Because this guide is working on hot components and near your exhaust and cooling fan, if you are not comfortable working on your own vehicle, stop now.
Figure 1. Chevy Silverado thermostat and housing. Thermostats have a rated temperature listed on them. Most commonly, thermostats are rated at 180, 190, and 200 degrees Fahrenheit, which fully open about 20 degrees after its temperature rating. Common problems associated with thermostats is engine overheating or an engine that runs too cold.
The part number for the factory thermostat for your Sierra is GM part number 12562740, 12571261, or 12562740. The temperature rating for these thermostats is 186 degrees, and that is the stock rating for your Sierra.
What do you need to know about GM thermostats?
A GM thermostat is an exact fit replacement part that never needs to be modified in order to get it to fit. When you buy your OEM GM parts from us, you’ll get fast, affordable shipping. Order today and get back on the road. Description: V-8. Cadillac.
How do you change the thermostat on a Chevy Silverado?
Follow the upper radiator hose to the thermostat housing at the top of the intake manifold. Loosen the hose clamp with a screwdriver and pull off the end of the radiator hose from the thermostat housing. Remove the two bolts on either end of the thermostat housing cover and pull off the cover. Take out the old thermostat.
How to replace the thermostat on a Duramax Diesel?
Remove the 12mm bolt holding the black coolant pipe to the thermostat housing 3. Remove the four 12mm bolts in the thermostat housing. 4. Now we need to loosen the black coolant pipe so we have some play in it. First remove the 12mm bolt holding the black coolant pipe to the drivers side head.