20 Most Recent 1990 Chevrolet C3500 Questions & Answers

Check the blower motor speed control resistor, and all connections for good fitment.

IT IS POSSIBLE THAT THE CALIPER PINS ARE SEIZING IN THE CALIPER BRACKET. YOU MIGHT WANT TO CLEAN THE HOLES AND MAYBE CHANGE THE FLEX HOSE. EITHER ONE OF THESE COULD CAUSE THIS PROBLEM.

possible that it has a draw on the batteries-or the batteries are no good-make sure nothing is plugged in to the cig light or the trailer plug for the night and try that-if it is still dead-you should get the batteries tested

sounds like throttle sticking check cable to throttle linkage & linkage

https://en.wikipedia.org/wiki/Chevrolet_Silverado https://www.topspeed.com/cars/chevrolet/2015-chevrolet-silverado-hd-ar160510.html

Hi, I have pasted the procedure below. Your spec is 0 degrees (right at TDC).

CHECKING AND ADJUSTMENT

HEI Systems

1. Start the engine and allow it to reach operating temperature. Stop the engine and connect the timing light to the No. 1 (left front) spark plug wire, at the plug or at the distributor cap. You can also use the No. 6 wire, if it is more convenient. Numbering is illustrated in this section.

Do not pierce the plug wire insulation with HEI; it will cause a miss. The best method is an inductive pickup timing light.

1. Clean off the timing marks and mark the pulley or damper notch and timing scale with white chalk.
2. Disconnect and plug the vacuum line at the distributor on models with a carburetor. This is done to prevent any distributor vacuum advance. On fuel injected models, disengage the timing connector which comes out of the harness conduit next to the distributor, this will put the system in the bypass mode. Check the underhood emission sticker for any other hoses or wires which may need to be disconnected.
3. Start the engine and adjust the idle speed to that specified on the Underhood Emissions label. With automatic transmission, set the specified idle speed in Park. It will be too high, since it is normally (in most cases) adjusted in Drive. You can disconnect the idle solenoid, if any, to get the speed down. Otherwise, adjust the idle speed screw.

The tachometer connects to the TACH terminal on the distributor and to a ground on models with a carburetor. On models with fuel injection, the tachometer connects to the TACH terminal on the ignition coil. Some tachometers must connect to the TACH terminal and to the positive battery terminal. Some tachometers won't work with HEI.


WARNING Never ground the HEI TACH terminal; serious system damage will result.

1. Aim the timing light at the pointer marks. Be careful not to touch the fan, because it may appear to be standing still. If the pulley or damper notch isn't aligned with the proper timing mark (see the Underhood Emissions label), the timing will have to be adjusted.

TDC or Top Dead Center corresponds to 0°B, or BTDC, or Before Top Dead Center may be shown as BEFORE. A, or ATDC, or After Top Dead Center may be shown as AFTER.

1. Loosen the distributor base clamp locknut. You can buy trick wrenches which make this task a lot easier.
2. Turn the distributor slowly to adjust the timing, holding it by the body and not the cap. Turn the distributor in the direction of rotor rotation to ******, and against the direction of rotation to advance.
3. Tighten the locknut. Check the timing again, in case the distributor moved slightly as you tightened it.
4. Reinstall the distributor vacuum line or the timing connector. Correct the idle speed.
5. Stop the engine and disconnect the timing light.

Check the big plug behind the dash - they can come loose

Dealer check codes

try cleaning battery connections and starter connections if this was helpfull please leave good feed back

with truck off, move passenger to full hot and driver's to full cold. turn key on and run air for 15 seconds.

turn key off

move climate controls to opposite positions and turn key on again with air on. Run for 15 seconds. turn key off.

center temp controls and turn key on again. this should fix you.
move

Who told you to floor it to start? Not even a carbie one start like that. Just crank it and it will start otherwise you floor the engine with too much fuel it wont start.

When you say no power, do you mean no headlights or anything ? Do you have power at the starter posts ?

sounds like the brake hose has colasped not letting the fluid return back from the caliper, common promblem on chevrolet another sign is it will pull to the right when braking hope this helps.

I have experience this problem before . it was the map sensor (tell the pcm the load on engine. other thing could be the fuel filter or else. check data with a scanner when the problem is present.