1990 Chevrolet Suburban 2500 Questions

All 1990 Chevrolet Suburban 2500 Questions

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fuel pump is good every couple days its starts surging in park it work little better always ...
We have already diagnosed the truck with starting fluid Ignition works but immediately quits. Incidentally no headlight power to the main switch? ODB port also has no power, I suspect it is through a power circuit s...
the control switch for the heat will not go all the way to the right. i have the assembly out and it feels like the cable is too short to go all the way. I can't figure out what needs to be taken apart to reach the ca...
Smog results were... @15mph - RPM 1753 - %CO2 Meas 11.8 - %o2 Meas 0.0 - HC (PPM) Meas 87, Max 134, Average 67 - CO(%) Meas 5.07, Max 1.34, Average 0.24 - NO (PPM) Meas 2, Max 1549, Average 681 - @25mph ...
My friend owns a Suburban, and she has to manually turn the turn-signal on and off, it doesn't do it by itself. However if it rains and car gets wet, the turn signal will work. As it starts to dry out, it stops work...
The engine clatters upon startup, and quite's down upon idle, then knocks slowly after warm up, but runs smooth and strong no engin missing at any speed. Any Idea's?