Question about GMC Cars & Trucks
With a scanner watch the grams per second on the mass air flow sensor. If you aren't getting close to 180 grams per second of air flow then you probably have a clogged catalytic converter. You can verify this by holding the throttle open and measuring the exhaust temperature in front of the catalytic converter and behind it. A good cat will be hotter at the rear than in the front. A clogged cat will be hotter in the front as the heat cannot escape from the engine.
Posted on Apr 16, 2019
Fun a fuel flow test on the fuel system. You may have a restriction in the lines of filter. Also make sure that nothing is blocking the accelerator peddle from opening all the way. Use a scanner and check voltage the throttle body is getting from the sender.
Posted on Apr 16, 2019
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Posted on Jan 02, 2017
I think this is for an oil level sensor. Should be easy to change , or a shop can do it for a nominal charge. The dealerships will want more.
Posted on Feb 01, 2012
Hi. There are many reasons for your A/C to shut down. Low refrigerant, faulty pressure switch, wiring, ground or A/C clutch may be to blame. I recommend sending it in for diagnostics. The technician will test your system, add die, check for operation and leaks and let you know what is needed to repair your climate control system. Typically the service is $150. prices do vary but it is the best way to get it done and down quickly. Any questions please write back. Good Luck.
Posted on Oct 10, 2018
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