Hello. MAP stands for manifold absolute pressure. So the answer to your question would be that it is the manifold absolute pressure sensor that there is something wrong with. The map sensor reads the pressure in the manifold and sends...
Hi there: Based on your question and the information listed, it's possible that you've got an exposed wire somewhere in your vehicle that is causing a short with your door locking mechanism. Sometimes this issue is caused by a faulty...
Hi Justin. Thanks for contacting us today. Assuming you reprogrammed the throttle body to the ECU after replacing it, there are a few things that could be the source of your issues that the OBD-II trouble codes might help locate....
Hi there. The problem with trying to diagnose this transmission fluid leak issue you have with the Hummer is that it's quite possible that the leak could be caused by multiple issues. Certainly a loose transmission fluid tube or damaged...
To obtain the requested quote, please visit YourMechanic’s radiator replacement service page (https://www.yourmechanic.com/services/radiator-replacement). Once on that page, click on "Get a Quote" and enter your vehicle information (year, make, model). You are welcome to buy your own parts and book...
The best thing to do is put the vehicle on jack stands and remove the tires to the suspension that is to be damaged. Then check the ball joints, control arm bushings, and the control arms and see if there...
For the 2007 model year, GM replaced the problematic 3.5L engine with the 3.7L. This engine is pretty decent. The transmission is a 4-L60E, which is well known for having all kinds of issues. The GM 10-bolt rear end is...
Hello, It sounds like you may have an issue with your evaporative emissions control system. The EVAP system prevents fuel vapors from the fuel tank from escaping into the atmosphere. The EVAP system collects and temporarily stores the fuel vapors...
Hi there. The code P0171 (https://www.yourmechanic.com/article/p0171-obd-ii-trouble-code-system-too-lean-bank-1-by-andrew-quinn) is caused by the engine getting too hot and not having enough fuel to burn. Check the fuel injectors, fuel pressure, and the fuel pump to see if they are working properly. Since the...
Hello - the H3 has a 6-quart oil change capacity, which is more than most engines these days (4 or 5 qts), and synthetic oil is recommended. These are the only 2 logical reasons for increased oil change cost. Hope...
Hello. There is a computer that controls the door locks and the warning light that you see. It is known as the Body Control Module. Something has likely gone wrong with this module, which may or may not be repairable....
The connecting rods can only be replaced by removing the piston from the engine. Pistons can only be removed from the top, ad that means the cylinder head has to removed from the engine. To access the rods on this...
Hi Jimmy. Thanks for contacting us today. I'm in agreement with you - in that the replacement of engine mounts is NOT a solution to resolve a P-0420 Error Code. You should read this article about this code (https://www.yourmechanic.com/article/p0420-obd-ii-trouble-code-catalyst-system-efficiency-below-threshold-bank-1-by-jamahl-walker) -...
Besides the 4.0 hours labor at your local charge per hour rate you will need to also supply the coolant for the engine and also the refrigerant to recharge the air conditioner after repairs are done. The A/C needs to...
Typically, the scenario is the reverse: that is the water pump fails and the question is should the thermostat be replaced at the same time that the water pump is replaced. The answer is absolutely because the thermostat itself can...
Hi there. If your engine is consuming too much oil, then I would consider checking the (PCV) Positive Crankcase Vent Valve (https://www.yourmechanic.com/services/positive-crankcase-ventilation-pcv-valve-replacement) and see if its plugged up. A PCV valve can plug up causing the engine crankcase to over...
The typical cause of a whining sound during engine idle; which progressively gets louder during increase in RPM is a belt, pulley or faulty pump (either AC, water pump or power steering). If you didn't remove the AC belt, this...
Faults in electronic or mechanical control components in the HVAC system have no effect on the heater core in the passenger cabin. The heater core itself is not a component that would looked at as a cause of engine overheating....
Hello - the crankshaft on the 3.7l LLR engine does in fact have the same stroke as the L52 3.5l engine in your H3, so there is a good chance it is compatible. Check with your Hummer parts specialist for...
Hello. It is common for the rear main seal to leak on this engine. Over time the seal fails and this occurs. You will need to take this to a shop that can remove the transmission to change the seal...
