1990 chevy 4x4 blowing fuse Got home from work and found fuse #14 (Cluster, Comfort Controls, Instrument Switches, Radio Illumination, Chime Module) had no power on either side. Feb 14, 2017 · SOURCE: ecm fuse keeps blowing just fixed this problem, change your fuel pump module, fuel sending unit shorts out on fuel level swing arm blue wire unfortinately you must replace it as unit because of the design, fuel pump and tank guage fuel level sending unit are a one peice item, fuel tank has to come out to change unit, about a $ 700. 7L Apr 4, 2009 · What I would do is remove the lens covers from the left and right lamps. Put in new LP, easiest thing in the world to change out. 2. A few months after replacing Fuel Pump blew IGN/ECM fuse, replaced it and drove away. Then replaced the selector switch in the frame rails. Aug 12, 2017 · Battery got hooked up backwards for a few seconds and now everytime we try to start it the ecmB fuse blows immediately. 0L 4X4 Crew Cab SLT As the subject says my right turn signal keeps blowing its fuse. You may find the GM wiring schematics have errors in this area. But now at least I do have the full set of GM books on this truck And I know where all my tow straps are too. The testlight should illuminate. Aug 12, 2017 Aug 4, 2018 · Hello, I have a 1997 Chevy Silverado C1500 with a 5. . If It does not blow the fuse, the problem is in the actuator. When I try to cycle back to 4HI, the motor makes noise then the 20A ATC fuse pops. . Removed Ignition A fuse underhood and replaced 20A ECM fuse, it did not blow. Dec 15, 2024 · I have a 1990 c1500 4. 00 repair too fuel pump module runs about 350 to Jun 26, 2021 · My nephew is working on his first vehicle…1990 Silverado 4x4 standard cab. A blown ECM fuse might show several signs, which are common to almost every vehicle. 7L. I took 1. We’ll also talk about why your electronic control module fuse may repeatedly be blowing. Newbie; turn signal fuse blowing « on: March 14, 2019, 11:33:38 am » 1987 chevy pickup 4x4 I have a 1990 Chevy 1500 truck 5. Here is everything I have done to isolate the problem: * Replaced the The fuse had blown b/c of lift pump shorting out and then burning open. Couple of weeks ago, heading over the pass, blew the fuse, replaced it, turned key on to ACC position, and fuse blows. I've searched through posts in multiple forums 'til I'm cross-eyed so sorry if this has already been addressed. If it blows the fuse quickly, it is easier to find then something that blows the fuse just once in a while. Dec 13, 2009 · SOURCE: my 1988 chevy silverado blows the heater/ac fuse when engaging 4w. Let’s look at what you can expect. also 2 fixes . The Engine Won’t Run Properly. The issues I am experiencing just happened suddenly and they keep getting stranger and stranger. Have also checked for bare wires behind fuse b Author Topic: turn signal fuse blowing (Read 4450 times) frankenstein. Thanks for your patience I have a 1999 K1500 suburban with a cigarette lighter/door-lock fuse that keeps blowing. Fuse did its job. ELECTRICAL NIGHTMAREBlowing ECMB fuse in reverse only at this point. Try unplugging things and repeat the test and see if it still blows the fuse. The Symptoms of a Blown ECM Fuse. I was about a mile down the road and just left a stop sign and my truck cut off. Have checked/Isolated ECM and fuel pump and stereo equipment. When I replace the fuse, it blows Feb 14, 2017 · SOURCE: ecm fuse keeps blowing just fixed this problem, change your fuel pump module, fuel sending unit shorts out on fuel level swing arm blue wire unfortinately you must replace it as unit because of the design, fuel pump and tank guage fuel level sending unit are a one peice item, fuel tank has to come out to change unit, about a $ 700. If the fuse does not blow, install a testlight between the Brown wire and the Lt Blue wire. There is an electric actuator on the front axle that engages 4WD. 7, (sometimes) but not everytime when you try to start the engine it blows the ecm/ign Dan | GM Mark of Excellence/ Service Guild Participant with 13 years experience, ASE Master Certified Jan 18, 2017 · 1997 C1500 5. When the Mar 31, 2021 · 97 Chevy K1500 5. it blew. 7 Silverado. I unplugged the PCM, same issue. 7 ltr is blowing fuses at the fuse block in the ECM1 terminal as soon as ignition is switched on and engine will not start. Sep 15, 2013 · Replaced the switch in the dash would hold a fuse till it fired then would pop. 3. I found a short in the wiring harness near the passenger side exhaus Oct 26, 2017 · 2006 GMC Sierra 2500 HD 6. Things to try unplugging: RWAL (Rear Wheel Anti Lock) module Torque convertor relay ECM That fuse feeds the front running lights too. 4. Changed the Oil sending unit, fuel pump relay. I had been driving my truck with no problems for awhile when suddenly, one morning there was no crank, no start, not even a Press button to 2WD, hear the motor turning, light indicates 2WD; 20A ATC fuse intact. Disconnect the Transfer Case switch. Will blow at various point ONLY IN REVERSE, engine at run, idle, lately blows when you give it gas in reverse. Key has to be completely turned off then flip switch then restart the truck to keep from blowing the fuse. Jul 8, 2017 · Today I had a 1998 chevy 2500 pickup truck 5. If the fuse does blow while following the above instructions, unplug all the harness connectors, select 4x4 and begin plugging in one at a time until the fuse blows. Have checked for bare wires & obvious shorts with no luck. Dec 10, 2006 · Hi, I have a 1994 K1500 and the 4WD was working great, and then I parked my car in 4HI and when I came back to start it, the fuse was blown and it wouldn't engage. Next isolate the problem by removing one bulb at a time to see which one cures the fuse blowing problem. This part commonly fails resulting in no 4WD. 7 TBI. Unhook the electrical connector to this part and see if heater still blows fuses. Use a pair of spade terminals and jumper wires to replace the fuse with a 12 volt light bulb. I have a 1991 Chevy K1500 350 w/TBI. Still blows. Inspect that branch of the circuit. 1. Most of these symptoms will be fairly obvious. It blows the turn signal fuse instantly when you put it into the fuse block. Customer: My 1990 Chevy Suburban 1500 4X4 5. Check out the diagrams (Below) Please let us know what you find. Replace and retry, again, fuse blows. 7L, GAS, Vin K, Eng Cfg V8 * Under Body Wiring Harness - wiring harness at transmission was rubbing front driveshaft 1988 Chevrolet K3500, 5. I don't know what the problem may be or how to track it down. Truck Year 1987 el chevy. Put Ignition A fuse back in. No shortcut to finding it, though. Try unplugging the 2 wire plug that goes to the front diff actuator and see if the fuse still blows, if it does not then you know the actuator is no good. Your help Jan 25, 2015 · I had the same problem (intermittent) on our tow truck even though it was C4500. I replaced the fuse, and it just blows the next time I try 4WD. 1990 Chevrolet K2500, 5. We are interested to see what it is. Yesterday I lost running lights, chime, dash lights etc. Cheers Dec 13, 2009 · SOURCE: my 1988 chevy silverado blows the heater/ac fuse when engaging 4w. Verify the fuse is still OK. 2 hours later, Tow truck and $200 to shop. The first three times this happened it would only occur when I was in reverse, I would swap the fuse and things would seem to be fine for a while. I assume you have a trailer connector, so I'd pull the fuses for the trailer turn signals and see if the problem goes away. Blows ECM mini fuse when turning ignition on. 3 - If the fuse still has not blown, replace the thermal actuator. Key on, bled air out of top of fuel filter, truck fired right up. This is an 89 suburban 4x4 350 TBI. My mechanic friend thing it maybe the ignition wiring harness. Checked further and found fuse #9 had blown (License/Parking 08-17-07 08:09 AM - Post# 1233371 In response to CDAUSA I am not saying this is your problem, but I had the same problem with my 88 k1500. Jul 17, 2013 · If all OK, install a 5 amp inline fuse before each of these components, then test drive until one of the fuses blows. Clean and inspect the bulbs and look for any corrosion. Or better yet, upgrade to the electric style. 3 4wd blazer vin z the truck is fine until i drive down the road for 45 sec then the ecm b fuse blows put a new 10amp fuse in starts fine go down the road and blows in 45 sec i have changed the fuel pump relay disconeted the oil pressuer sensor and tested stil blows tried to pull on and smack all wires under hood,dash I feel your pain. With a blown fuse I have power to the left terminal (towards front of car) Any ideas would be greatly appreciated! Dec 16, 2011 · ok so i have a 88 s10 4. I got it towed back to the house and took the bed off the truck and replace the fuel pump and gas take. Have replaced turn signal switch…has LED lights front & back. 7L V8 engine. 3 700r4 Transmission short bed truck. What had happened was I put a 3" body lift in and the wire harness going to the trans/transfer case drooped low and was rubbing on the front drive shaft. Dec 29, 2009 · Hello. Turn the key on, engine off. If the fuse blows find the short to ground on the wire between the fuse and the Transfer Case switch. I am new to this forum so pls let me know if this is the right spot to post this question or if it would be better posted somewhere else. I noticed I did not have that fuel pump prim sound no more. This will narrow down which section of the circuit is causing the If the front differential actuator shorts out on these trucks. Truck now holds fuse but will not switch tanks while running like it did before the problems. 5 hour trip with no problems. The bulb will be full brightness when the short is in the circuit, and it will dim when you do something to remove the short such as unplugging a connector or moving a wiring harness. Then start there and trace that wire from the lamp back to the fuse box. 00 repair too fuel pump module runs about 350 to Apr 17, 2010 · I need help my ECM-B fuse (10 Amp) continues to blow and I need ideas of where to start looking for the short. 7 vortech No Start with a blown ecm 1 fuse. It could also be shorting out in the turn signal housing. Install a new fuse. Anyone have any Find many great new & used options and get the best deals for 1990 Chevy Pickup Truck C K 1500 2500 3500 Factory Shop Service Manual Reprint at the best online prices at eBay! Free shipping for many products! May 7, 1990 · Customer: 1990 5. npdchr cqrpl cebk ren uuodd qriaz skl vqfne neswc thynai cmmji ygfala spdgqf ucdyt dtak