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2000 GMC Sonoma Extended Cab Questions & Answers
2000 GMC SONOMA SLS
In some applications a check engine light is triggered by the odometer. Requires the dealer to reset. If no ODBII faults are present, the only sensors that are subject to physical wear are the TPS(throttle position sensor) and the 02 sensor(oxygen sensor). These 2 sensors are relatively cheap and should be replaced due to age(2000). To maintain optimum performance, I do 3 things, every 30,000 miles. 1) Change the Air Filter. 2) Replace Fuel Filter and 3) Add a can of B&G44K to a full tank of fuel. The B&G is the best on the market and will condition your fuel pump and injectors. It is available only through dealerships(11.00 a can at Toyota) and should not be substituted. These 3 things are your path to cheap performance and fuel economy
I installed spark plug wires wrong on a 4.3 gm
Standing at front of truck, looking under the hood.
The closest cylinder to you on your right is #1. #2 is close left. #3
is middle right, #4 middle left. #5 is back right and #6 is back left.
Firing order is 1-6-5-4-3-2. This is the sequence for placing the wires
on distributor cap in a clockwise direction. #1 spot on cap is the 3rd
post after the wiring harness (clockwise). This post should be closest
to cylinder #5.
Smelling fuel fumes inside cab
Possible fuel line leaking or check around the area of the carb for leaks. Check all line connections Check gas tank all over. I doesn't need much of a leak to smell. Some times leaks develope at the tank top where the fuel pump is located as well.Please don't use a match for light to check this out
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