Top 20 1990 Chevrolet Suburban Questions & Answers

Question edited for clarity, typos, real sentences and stuff. Question moved to model category. By 'spray it', it presume you mean spraying with Easy Start? If so that means you have a fuel delivery issue? Check the following You have fuel in the tank. The fuel pump relay is operative. The fuel pump works and you have the required fuel pressure. ..

You will have to trace the wiring. There is a short somewhere before it reaches the actual horn or light. Horns pull an extreme amount of amperage. The relay may be stuck or the wiring to the switch may be bad. My bet would be a shorted switch or relay.

You need to be more clear about what you did. Red wire to the casing? Is the radio and all of that ok now? The more detailed info the better help you can get.

You need to put a mark on the dist. and one on the firewall so when you drop the dist. back in the marks line up and maintain the engine timing, also do not move the oil pump shaft the dist. goes into. When replacing the intake gaskets you will need to use rtv in each corner (front and rear each side) on the china wall to seal rubber seals for the front and rear across the intake area. If you did not get the rubber seal across the china wall you can put a heavy bead of rtv across and seat the intake in it, just don't move the intake after seating it on the engine. Hope this helps.

Transfer case is bad. My first guess. If the transmission were bad it wouldn't move at any position. Is there any noise? You have 4 possibilities, Front and rear differentials, transfer case, and the transmission.

You installed the wires wrong Should have made a diagram before removing the old ones Google a picture of the wiring

Do you mean the outside latch handle or the inside one.. ?? if the outside one you will have to release the door manually .. which means you will have to take off the inner door panel and find the rod that goes to the latch,, follow that rod and you will find the latch.. release it open the door and replace the handle.

remove inside door panel,when you look inside where the door handle is located,you will see a little rod.pop the rod out of the socket and turn adjustment piece.you will see threads on the long part of the rod.adjust rod.it will be trial and error until you have adjusted the stroke correctly. thank you.

1990 models is safty only here in nc, so it should pass. FIM is not likely..Cats and O2 senors very likely. Your solution can sometimes in few cases help

Yes, the brake light signal on American cars is routed through the turn signal switch. A new switch should restore both your turns and your brake lights.American cars use the same bulb filament and same wire to the rears for both brakes and turns. Press the brakes when turning and both rear brakes will light, but since one side travels through the flasher relay, that side will blink, while the other side has a steady light.

clean your throttle body.check for codes; you might have a map sensor problem, or your tps might have a dead spot. 9 times out of ten it is a dirty throttle body; the iac can't react fast enough to regulate air when the small gap adjustment of the throttle body gets contaminated with a tarry buildup.

Rebuild the throttle. Change the throttle position sensor iac motor and mass air flow sensor. You may have to replace the cpu

So you saying you had a gear oil leak,didn't know it & the fluid leaked out &ruined the gear set & or bearings?That won't be cheapWere in the at home social chat room hereSo only a repair shop can get into prices

you have to call around do price check.

disconnect your negative side of the battery and try cleaning your iac valve, and your egr valve, reconnect your battery and see if the light comes back on, give this a try it might work

We do not have emissions testing here, so I can't give specific advice on reducing nOX, but the EGR can be tested with a handheld vacuum pump. Simply idle the engine and slowly apply vacuum to the valve. If the engine starts running rough, the valve is opening.

This is a lock smith or dealer issue unless you can get a slim jim type tool to reach through the window slot and catch the latch.

Don't know the Suburan but suggest you check the wiring connection to the overdrive solinoid as it will be on the outside of the overdrive casing & open to all sorts of wet & muck.Also check the oil level.Jim

I assume manual? There should be a switch at the clutch pedal

either the cats plugged or you have a hole in the exhaust