Question about 2001 GMC Jimmy
HOW MANY SENSORS ARE ON A 2001 4.3 JIMMY EXHAUST SYSTEM?
There will be one in each exhaust manifold or in the exhaust pipes right after the manifolds. these are referred to as the upstream sensors or "sensor 1". there is one after the catalytic converter. This is referred to as the downstream or "sensor 2"
Posted on Feb 22, 2012
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Posted on Jan 02, 2017
Disconnect the heater hoses from the water pump and the intake manifold. Get a compressor and blow out the hose (put the air hose into the the hose that came off the mainfold. then flush the system and replace the antifreeze.
Posted on Dec 12, 2008
What does that mean?
The P0410 code refers to the emissions system. The AIR pump puts air to the
exhaust to lower emissions. It takes in outside air and pumps it through two
one-way check valves into each bank of the exhaust.
About 90% of the time that this code is set, the one-way check valves have worn out or failed and allow water (which occurs naturally in the exhaust) back into the pump. In any cold climate, especially in climates with higher humidity, this water may be more excessive. The water partially fills the AIR pump, it can then freeze. When the PCM commands the pump on, if the pump is frozen it cannot turn, thus overloading the circuit and "popping" the fuse.
Symptoms Possibly symptoms include:
Additionally, if you simply replace the AIR pump the problem may return again (and again). If you replace the pump, also clean out the hoses and replace the one-way check valve. If this is on a GM model that the TSB applies to, follow those instructions in the link above. In a few cases, people have put a small hole in the rubber cover on the pump which allows any water to drain out.
Also, please note that this may be covered under the emissions warranty on the vehicle. If your vehicle is out of bumper-to-bumper warranty, check if the emissions warranty is still valid!
Posted on Mar 06, 2009
Your transmission is electronic, it read's the the speed sensor from the yoke and relay's the information to the ECM which tell's the servos in the transmission acivate to change the gears up or down with the engine out put.
Posted on Apr 05, 2009
I don't think you have anything wrong, I just don't think you have completed the correct drive cycle yet. Some vehicles must be driven in a very specific way before all the monitors will set. Here is the drive cycle that Gm Recommends:
Do not leave the key in prior to the cold start or the heated oxygen sensor diagnostic may not run.
Posted on May 18, 2009
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