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K1500 Suburban

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Question
The truck shakes and there's an imminent smell of gas but no signs of leakage. When accelerating it also backfires multiple times.
Hi there. If there is a smell of fuel in the engine compartment, then the fuel injector o-rings are not sealing and causing the smell of fuel to vapor out. The backfire event is caused by the ignition either being...
Question
Will a bad O2 sensor damage my car's computer?
The engine control unit (ECU) is a possible cause of the O2 sensor fault codes but not the most likely. Your vehicle is equipped with 4 O2 sensors. Bank 1 is the driver's side. Bank 2 is the passenger side....
Question
Door locks not working, and trouble codes
Hello. From what you describe it would appear that your vehicle is experiencing more than one issue. The codes retrieved are for the vehicle's ABS system and are likely a separate problem from the door lock malfunctions. While it may...
Question
99 GMC SUBURBAN running lean and starving for fuel when stompped on.
Hi there. Is there a check engine light on? If so, what are the codes, freeze frame data? Stored codes and data will aid in diagnosing what is occurring. What does the data look like from the O2 sensors? Which...
Question
Ignition fuse keeps blowing
The ignition circuit fuse blowing and the problem with the blower motor are almost undoubtedly not related. In particular, if the blower motor works, on any speed, while at the same time the ignition circuit fuse is blown or otherwise...
Question
Foot pedal vibration at certain RPM's?
The vibration still sounds like it could be coming from a worn engine or transmission mount. You may be able to do a simple check by engaging the parking brake and putting the vehicle in drive and blipping the throttle...
Question
Starts hard. Fuel pump recently replaced. Runs fine after it is started. Fuel pressure leak?
If the fuel system is not holding pressure up to the injection system it could be caused by a leaking fuel pump check valve in the pump, leaking pressure regulator or a leaking injector system. If the engine has the...
Question
Car won't start with new battery
This may be related to many different possibilities, some of which may be related to a lack of spark and some of which may be related to a fuel delivery problem or a combination of both. For example, if the...
Question
How do I override the interior light delay module so when I shut the door the lights will turn off?
Hi there. The interior lamp control module is located under the center of the instrument panel on the dash of your vehicle. Look for any ground wires to the interior light circuits to see if they are loose. If all...
Question
Hissing noise when brake pedal depressed.
Hello, the hissing sound is an internal vacuum leak with in the brake booster. The booster uses vacuum to assist with the brake pedal apply. You will need to replace the booster. If you'd like, a certified Your Mechanic...
Question
Makes brake fluid is black
Brake fluid accumulates moisture and contaminants over time and consequently the fluid should be replaced about every 35,000 to 50,000 miles. To service the fluid you can request a brake system flush and refill. If you request that service, the...
Question
My 99gmc suburban backfires in the throttle body, won't start.
If you were getting a rattling noise in the lower front of the motor then you engine may have jumped timing. The timing chain may have been so worn that it jumped ignition timing between the crankshaft and camshaft. That...
Question
I have coolant in my lower intake manifold after replacing the gasket in my upper manifold in my 1996 Chevrolet Suburban.
Hi there. If you have coolant in your lower manifold also then at the very minimum you need to blow it out with compressed air. I would recommend removing the lower manifold also to make sure that you get it...
Question
No fuel between schrader valve and spark plug.
Hi there. The spark plugs may be sparking, but there is not enough energy to ignite any type of fuel. I recommend replacing the spark plugs and wires and retesting. The fuel rail could have an obstruction in the line...
Question
Every time I droves 40 or 50 and apply to the brakes,my front end shakes what can this be
The most common cause for a pulsation when the brakes are applied is warped rotors. The brake rotors will wear over time and the brake rotors are a perishable item. The rotors can warp due to excessive wear, using the...
Question
My transmission jerked when I took off and then about half of mile down road stopped pulling. Rpms rared and speedometer dropped
With 180,000 miles, it's possible the transmission has failed. Has it been maintained according to the owner's manual ? A good rule of thumb is to service the transmission every 4 years or 50,000 miles. If the fluid level or...
Question
Fuel gauge only rises to half tank when completely filled
This is a problem likely related to your fuel tank sending unit. The fuel gauge sending unit is a small float type component (or sensor) inside your fuel tank that measures the level of the fuel inside the tank. As...
Question
My z71 chevy k1500 is bogging out when accelerate. It idles good just no power when you punch it
It sounds like you may have a fuel supply problem in getting the proper amount of fuel to the fuel injectors which may be caused by a bad fuel pump or potentially faulty fuel injectors. This can happen when the...
Question
1999 chevy K150 suburban electrical problems
Hello, thank you for writing in. There are several components that will attribute to electrical issues like this. Generally speaking, when you have issues with several electrical systems at once, and not just one or the other, the charging system...
Question
I have a 1993 GMC Suburban and the key will only turn forward like to start. It is in park but the key will not turn back to stop
Hello, thank you for writing in. Your key cylinder, or ignition cylinder, has likely failed. They can also get dirty and collect debris inside that may restrict them from working properly. The best option is to attempt to clean it...

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