I've changed transmissions in my truck and now I cannot get the thing to start

Asked by GuruN4XSB Jul 01, 2020 at 10:44 PM about the 1990 Chevrolet C/K 1500 RWD

Question type: Maintenance & Repair

change back over to a 5-speed manual from
an automatic transmission now I can't get
my truck to start wondering what the
problem could be

HooFlungDung answered 4 years ago

First off automatic transmissions have neutral safety switch that prevents it from starting in any gear besides park or neutral. I can’t say for certain if the 1990’s had a first gen 4L60e or not but if so the gear selector is tied in to the neutral safety switch at the transmission by 2 separate harness connectors that send the gear position back to the pcm. If the neutral safety switch is not synced or positioned right then it will not send the proper signal back to the pcm for starting or shifting purposes. You may need to change or replace that component to accommodate for a manual transmission.

Mark helpful

Your Answer:

I've changed transmissions in my truck and now I cannot get the thing to start 1 Answer

change back over to a 5-speed manual from an automatic transmission now I can't get my truck to start wondering what the problem could be

1990 Chevrolet C/K 1500 RWD

-

Maintenance & Repair
I can't get my truck to start after replacing the fuel pump. 1 Answer

I have replaced the fuel pump on my 1992 Chevy Silverado 5.7L, and now it won't start. I think the fuel lines have air in them, will it work itself out, or is there a process for me to bleed them?

1992 Chevrolet C/K 1500 Silverado LB RWD

-

Maintenance & Repair
okay so I just did my tune up. I drove the truck yesterday and it drove fine. everyone keeps telling me that the timings off. but I have everything in the right firing order and now its not starting its back firing and now I have smoke coming from under the hood. the spark im getting is an orange color. the truck is acting like it wants to start the motor turns but it wont completely start. please help! 4 Answers

just changed spark plugs, cap, rotors, and wires. the truck ran fine and started fine just yesterday. Chevy C1500, Motor350 5.7 V8.

1998 Chevrolet C/K 1500 Cheyenne Extended Cab LB RWD

-

Maintenance & Repair
what should the gap be on my '91 c1500 305. I've tried to research it and couldn't find a thing. 3 Answers

I'm trying to change the spark plugs on my '91 c1500 305 for the first time and im not sure what the gap should be at.

1991 Chevrolet C/K 1500 LB RWD

-

Maintenance & Repair
My 99 k1500 suburban 5.7 liter 4x4 stays engaged n won't disengage the lights on the switch blink on of from 4h to 4l n then stays lit in 4h I have replaced the switch n the actuator in front and it still does the same thing before I replace the motor in the transmission is there anything else I can check or replace that is less expensive the used motor is 100 at junk yard my service 4x4 light was on n off now it stays on all the time any help will be well appreciated winter is here n I get stuck in my yard in 1" snow all the time thank you 1 Answer

Stays engaged in 4h changed the switch n actuator n still same problem what else can it be I think the motor in tranny is good if its staying engaged does it mean the motor in tranny that engages is...

1999 Chevrolet C/K 1500 LS Extended Cab 4WD

-

Maintenance & Repair

Own this car?

Share your experience with others.

1990 Chevrolet C/K 1500

Write a car review

Review another car

Used GMC Sierra 1500

1,892 Great Deals out of 72,257 listings starting at $1,900

Used Ford F-150

6,459 Great Deals out of 169,177 listings starting at $1,871

Used Chevrolet C/K 2500

46 listings

Used Chevrolet S-10

152 listings starting at $3,999

Used Chevrolet Corvette

793 Great Deals out of 14,532 listings starting at $4,999

Used Chevrolet Camaro

655 Great Deals out of 8,355 listings starting at $3,240

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.

I've changed transmissions in my truck and now I cannot get the thing to start

1 Answer

Your Answer:

Own this car?

Share your experience with others.

Shortcuts

Search Chevrolet C/K 1500 Questions

CarGurus Experts

Know more, shop wisely

Related Models For Sale

Used Cars for Sale

I've changed transmissions in my truck and now I cannot get the thing to start

1 Answer

Your Answer:

Related Questions