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C1500 Suburban

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Question
Just bought ran good 100 km now stalls at Red lights
This may be a sign of a failing mass air flow sensor, a failing idle air control valve or potentially a clogged catalytic converter. As you may already know, the catalytic converter converts toxic exhaust gases into less harmful pollutants...
Question
Car hesitation from stop to acceleration
Hi, thanks for writing in. Prior to further diagnostics you should install the spark plugs that are referred to in the factory service manual and/or obtain the plugs from a GM dealer. Installing alternative aftermarket plugs with different gaps, materials,...
Question
Brakes pedal kicks back, abs light turns on and prevents gears to shift.
The warning light about the Anti-lock Braking System (ABS) is telling you it is activating. If this is happening on dry pavement, then it is likely a malfunction with the ABS. You definitely want to get this checked out ASAP....
Question
What would be the common or uncommon causes for gas mileage to drop by almost 50%?
Hi Wayne, There are a number of things that can cause poor fuel mileage. A faulty camshaft position sensor is one of them. The camshaft position sensor is a magnetic sensor that monitors camshaft speed to regulate ignition timing and...
Question
Is it safe to drive around without my MAP sensor plugged in?
Hi there. From the description you have provided, your vehicle's drivability concern should be diagnosed and repaired. It is not advisable to drive your vehicle with the MAP (manifold absolute pressure) sensor disconnected. The MAP sensor's job is to determine...
Question
Problem with the engine. Stalling and fuel system issues.
You have done a good job of updating parts that may not have failed, but do tend to wear down and not work proficiently. When you replace the fuel pump, you must always replace the fuel filter as well. If...
Question
Heater does not work and has a loss of power to the switches.
Hi there. If the motor works fine with power directly to it and when the switch is not working properly causing the motor to come on slower and weak, then switch cluster has failed and needs replaced. If you need...
Question
My heater blower motor is blown. What is the best way to find where the water leak is coming from?
If you are certain that the blower motor was damaged by a water leak, this would have likely come from the heater core or one of the hoses running to the heater core. I would suggest checking around the heater...
Question
Car won't start
Depending on the symptoms or sound you are hearing when turning the key, this may be related to the starter being misaligned. If there is a problem with the starter gear reaching the flywheel, this can happen easily when the...
Question
Stalling issues
There a few things that could cause this kind of stalling. If it is a fuel related issue, this may be a dirty or faulty idle air control valve. The idle air control valve monitors the air intake as it...
Question
Steering is jerking
Hi There, What you are describing sounds like a problem with the rack and pinion gears. The rack and pinion gear set does two things: It converts the rotational motion of the steering wheel into the linear motion needed to...
Question
Why would I have an intermittent spongy brake pedal on my 1999 Chevrolet Suburban
Hello. Most of the time this is caused by the master cylinder failing internally. If you have replaced it with a new one then that should not be the issue. If you used a rebuilt master cylinder then that may...
Question
My car is sputtering
Hello - while a small hole in the exhaust will have an irregular exhaust noise to it, your symptoms sound more like a misfire on one or more cylinders. This could be caused by bad plugs, wires or coils. Other...
Question
Heater does not work
Your vehicle's blower speed selector controls voltage to the blower motor using two different circuits. When high speed is selected the blower control switch bypasses the resistor and operates the blower relay sending full battery voltage from the blower fuse...
Question
Brakes go to floor and are squeaky...
The brake booster is a mechanism that uses vacuum pressure to take the force being applied to the brake pedal and amplify it. If the booster is bad, then the full amount of force needed to activate the master cylinder...
Question
A.I.R. pump is missing in my car
Hello. The A.I.R. system is an emissions system that is designed to inject air into the exhaust manifold to help with the combustion of any unburned fuel before it reaches the catalytic converter, resulting in cleaner emissions. In order to...
Question
Steering becomes slack while making turns in either direction.
Hello. Thank you for writing in. There are several components that may cause the steering to be loose or jerky. The first thing to do is check the power steering fluid color and level. Make sure its clean and topped...
Question
Hard to start stalls out
Hi There, As a general rule, car engines do not like cold weather and do not do operate as well in cold weather. When you start your car in the morning and turn the key to on, the coolant temperature...
Question
No palus to injectors
Hi there. If you are not getting a power indicator from a probe to a specific fuel injector, there are usually two reasons. First, the wiring harness connected to it is damaged or two, the connection to the engine control...
Question
Crank no start
Hi there. The issue seems to have a misfire with the spark plugs and wires. The smoke that is coming out of the breather on the intake or valve covers is caused by the fuel burning on the exhaust stroke....

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