20 Most Recent 2008 Chevrolet Silverado 1500 2WD - Page 5 Questions & Answers

Use the codes you get to diagnoseSame as any OBD2 System problem

Code 1133 is when the O2 sensor in front of the catalytic converter on bank one does not switch back and forth between rich and lean.The problem could be a faulty sensor or something with the fuel mixture. The sensor would need to be tested.

My first guess would be the line is frozen. Can you unplug the line at the pump and see if fluid will come out of the pump ?

No idea to be honest ,this is the sort of job i need my head under the bonnet and all i can suggest is to call a local mechanic to have a diagnosis ,try the spare key first though in case the chip has dropped out of the key or its been de-magnatised by a mobile phone in the same pocket or stood on top of a microwave

check trans fluid level/color. trans may have old/bad fluid in it and may need to be flushed and new filter installed.

should be behind the glove box

could be coolant temp. switch