1991 Chevrolet C1500 - Answered Questions & Fixed issues

So when you say 'it will not close' do you mean it won't stay latched or does it 'bang' as you attempt to close it and won't go into the opening all the way?

The reason i ask as it could simply be the 'claw' is stuck in the 'closed' position IF the door bangs and doesn't want to go all the way into the cab opening. IF that's the case then you can use a screwdriver and while holding the exterior button like you're trying to open the door and use the screwdriver to 'flip the claw' of the latch to the open position.

IF it closes into the opening but simply doesn't want to latch it MAY just need some lubrication. Spray it good with your favorite lube (WD40, etc) then work the 'claw' while activating the outside (or inside) button. If it still doesn't want to latch then chances are the spring inside of the latch mechanism is broken and the latch assembly will need to be replaced.

I know you have a '91, which SHOULD possibly be the same as the old '73-'87 regular pickup. IF it's the 'new' body style (1988-1998) then the videos aren't going to be of help at all.

These videos MAY help explain how things work and how the linkages clip onto the actual latch assembly;

I hope this helps.

1991 Chevrolet... | Answered on Feb 14, 2018 | 78 views

Actuator on front axle not working or unplugged ,,

1991 Chevrolet... | Answered on Nov 12, 2017 | 98 views

Speedo cable is probably shot. They just get old and stop working right.

1991 Chevrolet... | Answered on Sep 21, 2017 | 77 views

If you have a carb its chock .If injection its fuel related filters regulator restrictions if fuel flow ect.

1991 Chevrolet... | Answered on Sep 11, 2017 | 64 views

Fuel pump is over heating. Replace the pump with a new one A/C Delco part only others have been known not to hold pressure. I know I have lived that nightmare. Again A/C Delco part only. Good luck.

1991 Chevrolet... | Answered on May 07, 2016 | 87 views

you still have to check fuel pressure making sure your filter is good and pressure regulator and return fuel line clear from clogging also making sure your tps sensor commending advance timing and fuel at the same time

1991 Chevrolet... | Answered on Apr 07, 2016 | 28 views

Need more info....this is a 3 quarter ton so is this a 7.3 diesel or a gas engine? There can be several problems with the Truck. There's 3 things that make the Truck run which is Spark, Compression & Gas. Sounds like you have Spark & Compression. I believe you have a fuel problem. Check both fuel filters & replace them. If you have a diesel its more than likely the filter as well!
Is there an Engine light on? Check the code if it is!

1991 Chevrolet... | Answered on Feb 08, 2016 | 87 views

Hi Jamie:
Since it starts I'd guess that the ignition system is OK. Maybe not great, but it's probably not the primary problem.
- That leaves fuel as the major suspect. I'd try a dose of spry type carb cleaner and make sure that the fuel filter is not obstructed.
The vehicle is over 25 years old so maintenance history is important, and at that age (and mileage) you can expect that components will be getting to the end of their service life.
One consolation of owning an older vehicle is that you can always find a project to work on.

1991 Chevrolet... | Answered on Feb 01, 2016 | 151 views

sounds like the timing has gone south . get it checked and fixed

1991 Chevrolet... | Answered on Feb 01, 2016 | 183 views

Hi Ramon:
I'd start by checking to make sure that power is getting to it and that the cps is functioning properly.

1991 Chevrolet... | Answered on Oct 19, 2015 | 63 views

Have a complete change engine oil including change oil filter. and use unlead gas for the meantime,if your using a premium gas empty your tank and change it to unlead . run you vehicle for at least 10 miles before you have your emission test. after the test you can go back using you preferred gas

1991 Chevrolet... | Answered on Sep 03, 2015 | 175 views

my best guess would be a short in the circuit. probably in the steering colam.
(if it's blows the fuse for the left and right turn signal.)
but it could also be just a wrong bulb in one of the brake light sockets.
but i would go with my first guess.

1991 Chevrolet... | Answered on May 11, 2015 | 60 views

save yourself some time and look under the truck and trace the fuel lines from the fuel pump. The line with the gas filter in it will be the pressure line and the other will be the return line. Not sure if that helps but it is better than wasting your time looking for a diagram for two fuel lines.

1991 Chevrolet... | Answered on Nov 09, 2015 | 281 views

make sure that the right cap goes to the right plug. they are specific to firing order.

1991 Chevrolet... | Answered on May 03, 2015 | 294 views

Get a new light switch at LMC Truck parts:
Truck Parts and Truck Accessories

Truck Parts and Truck Accessories

1991 Chevrolet... | Answered on Dec 01, 2016 | 105 views

Super_guy said it all ! Remove all the screws on the inside of the panel. You can then use small pry-bars to slip behind the panel to pop out the clips that hold the panel in place. If in fact you do break any clips, you can buy then at Advance Auto, Auto Zone, Napa, and other places like that. Be sure to replace them, you don't want your door to sqeak and shake afterwards.

1991 Chevrolet... | Answered on Feb 08, 2015 | 74 views

Remove all screws and using a panel remover gently pry the panel from the bottom left

1991 Chevrolet... | Answered on Feb 08, 2015 | 30 views

Hi Bob, Have a look at this site it may shed some light on to your problem....oldtimeynerd.net/2012/10/01auto-gm-trucks-resolving-ac-issues/

I’m happy to assist further over the phone at https://www.6ya.com/expert/randall_d932ef6e01588b0f

1991 Chevrolet... | Answered on Feb 06, 2015 | 40 views

Under the dash board there is an electrical block with nothing plugged into it. there are 2 rows of terminals. on the top row on the right is terminal "a". terminal "b" is the second one in from the right. terminal diagram labeling is like this from left to right.
top row,"F", "E", "blank","C","B","A"
bottom row "G","H", "blank","blank","blank","blank"
take a small piece of wire and jump terminal "A" and "B". i found an unfolded paper clip works well. with the terminals jumped, turn the key to the on position.(DO NOT START ENGINE) with the key on, the service engine light will start flashing codes. count the flashes. it will repeat each code 3 times before moving on to the next code. your first and last code will be a code 12. that is just the test code. it lets you know you did it right. you will see 1 flash with a short pause then 2 flashes. after you see that 3 times, your next code will be your trouble codes. when you see code "12" again, there are no more. if you tell me what the codes are, i'll tell you what the mean. hope this helps.

1991 Chevrolet... | Answered on Dec 19, 2014 | 2,695 views

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