Showing articles & questions for topic
C1500

Related questions

Question
Water in oil
If you are getting water in the oil of the motor then you either have a leaking intake manifold or the head gaskets are leaking coolant into the oil of the engine. You should not drive the vehicle with water...
Question
I got a motor for my truck not to long ago and the motor will turn over a little by hand but not all the way around what could it?
There are quite a few issues that will keep an engine from spinning around completely. Something falling into the intake and coming into contact with the top of the piston, a valve hanging open and not allowing the piston to...
Question
Truck is overheating and heater won't work
Hello. The symptoms you describe are commonly associated with air bubbles in the cooling system. If the cooling system was recently serviced then it may be possible that it needs to be properly bled of air bubbles. Air trapped in...
Question
I'm having a stalling issue after driving for a while and in the morning the truck takes a while to find the right idle.
Hi there. Check the idle air control valve (IAC) on your vehicle and see if its working. Check for power to the IAC and also check the power coming out of the IAC. If the IAC is not sending any...
Question
What is the biggest engine I can fit into my truck?
Hello - GM big block (454 cu in) swaps are common, bigger (i.e. more cubic inches) engine surpass 572 with the same physical block configuration, and are available as "crate" motors, order it and drop it in. Speed cost $$$...
Question
My 4.3 vortex motor leaks like a faucet I think from the freeze plugs. Mechanic says there is water in the motor. What could I do
Hi there. If the engine is leaking coolant from the freeze plugs then they simply need to be replaced. As long as the engine did not overheat then there should not be any issues within the engine. If the mechanic...
Question
I just put in a fuel pump and its still not starting and its not the fuel relay what could it be?
Hello, thank you for writing in. When it comes to no start and stalling issues, you want to start with the simple stuff. Make sure your batter cables are perfect, the new battery is fully charged, and make sure the...
Question
Can I swap a 97 4.3 with a 94 4.3?
Hi there. You can change the engine block, but the cylinder heads will not match up. The cylinder heads for a 94 was made for an intake with a throttle body and injection in the throttle body where the 97...
Question
Broken rear-end shock mounting bracket
The rear end will bounce more than what you are use to when the shock worked. You will need to have the bracket welded back on to the rear as soon as possible.
Question
security wiring is different with another steering column that I installed.
Hi there. If you still have the other steering column, then you will have to remove the security chip and wiring set from it and install it into the steering column that you have. What is happening is the security...
Question
I can't get my 98 silverado to start
If adding fuel "directly" to the intake causes the engine to start, that could mean the fuel filter is blocked, there is a faulty pressure regulator on the fuel rail, the injector(s) are not functioning electrically and/or are plugged, the...
Question
My truck is overheating and when I turn heat on only cold air comes out?
Hi there. Check for any external coolant leaks. Look at the radiator, heater hoses, radiator hoses, heater core, and the core plugs (freeze plugs) on the engine and see if there is any visible coolant leaks. If there is no...
Question
Truck cranks but won't start. Has good fuel pressure and spark. Engine will crank and run if you pour gas in the throttle body.
Hi there. Check the injectors harness with the key on and the engine off without trying to crank. There should be a voltage on one side of the harness supplying fuel to the injectors. Then crank the engine and back...
Question
Dash lights don't work fuse blows tail lights work
There is usually three major reasons why a fuse blows; an exposed wire, faulty relay or bad ground. In order to correct the issue, you'll have to determine which one (or multiple ones in some cases) are causing the fuse...
Question
Right rear drum break is leaking again
The only thing(s) that pop into my head that could cause the brake fluid leak is a loose brake line or an issue with the brake cylinder. Unfortunately, we're not able to diagnose a brake leak via photo's, so you...
Question
Brakes and gas pedal 1979 GMC C1500
Hello - I would first check the throttle return spring at the carburetor - to make sure it's still there, and connected properly so that the throttle default position is "closed". Then check to see if the linkage back to...
Question
Cranks fine but wont start
There is quite a large number of possible issues that will cause a no start condition. There could be a bad fuel pump, bad spark plugs, faulty ignition coil, or a failed camshaft, or crankshaft, sensor. Any of which will...
Question
My clutch is hard to push down and when I do it squiles and vibrates so I was just w oundering what that could be
The most common for the clutch to be hard to push and is real noisey is going to be a broken clutch pressure plate. You will need to replace the clutch assembly to fix the problem.
Question
There is a knock under the body.
Hi there. Try putting the transmission in drive and reverse back and forth. If the clunk is heard in both directions and the clunk changes in sound pitch, then there is a universal joint that has the bearings burned up...
Question
Overheating and smoking
The heater not working in some cases may be related to the overheating problem you are also having. This may be due to a faulty heater blower motor or potentially a bad heater core. As you may know, the heater...

Need a mechanic?

Our certified mobile mechanics make house calls in over 700 U.S. cities. Fast, free online quotes for your car repair.

Get a quote

Post a question and get free advice from our certified mechanics.


Ask a question