GMC K3500 - Popular Questions, Answers, Tips & Manuals

is squeel possibly coming from the alternater, if not try belt dressing,longshot? Jeff

You can find free wiring diagrams here http://www.bbbind.com/free_tsb.html Enter vehicle info. Year , make , model an engine size . Under system click on brakes .under subsystem brake control will show on it's own . Click the search button .

You need to run a fault code test, to see if you have ignition problems and also do a fuel pump pressure check. To do a fault code test follow the link for instructions. FAQ How to read older GM codes for free

Unfortunately no. But if you replace the hub the ABS computer should not see the error anylonger. The ABS computer does a self test at key on, if there is not error to register then it should give the all clear.

how many ks?

Probably not the ecm.. look for bad plug wires, vacuum leaks, timing settings, Crank Position sensor, Spark plug wires incorrectly installed, Try this.. Open the hood at night and look for the plug wires leaking.. you are looking for sparks.. I would look for disconnected Vac. hoses, broken or cracked vac hoses, ..

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check the fuse in the computer management any sudden fault it will blow the fuse. on this model they were fitted. you will need to open the computer and using a meter check the fuses on the board. hopefully the chip has not been damaged but as you say by passing it runs the engine. so this is what i would say it is doing or not doing in your case ( not starting) board has a few fuse in side soldiered to the board

have new keys been made/gm puts sensor in key and they have to be programed to vehicle/have someone track code for theft or go to library and go to reference area find gm or chilton books to look up code and write down step by step to pinpoint concern perform the repair and pat yorself on back for a great job done

At handbrake

decal under hood not there ? a HAYNES repair manual @ autoparts store has diagram, just ask to see it, they will do that for you !

How long has it been since the previous start? If the truck started fine the time before failing to start, you probably have a fuel pump failure, or possible ECU unit failure. Are there any Fault lights showing?

you have direct power going to the starter. You have to find the short. Pull ignition fuse and look for burns inside the fuse box. Follow all wires coming off the new starter. Look at all associated ground wires. If that cannot be found, it may be a short in the ignition itself,

this vehicle has a map sensor which is controlled by vacuum,this could cause this problem. also exhust leaks can cause lean conditions. these problem should cause service soon light to come on.

The tank is mounted under the truck, there is no access plate that I know of. The pump has a sock filter on the end of it in the bottom of the tank.

You mean the starter is staying engaged ??

they usually last at least 50000 miles

Go HERE to find causes of this code and its definition.

Sounds like the transmission is burnt up. You will have to get a rebuild or a used one from a junk yard.

Hi there:This code is related to the TCC circuit in the transmission. It is either stuck in the closed position (regulator valve, or control valve) or it has a bad torque converter. You will need to take it to a reputable transmission shop to have some fluid line pressure tests done. The cost of course will depend on the repair needed. Some parts of the repair for this are pretty simple and only require removal of the oil pan and valve body to access related parts, but if the converter has ballooned and needs to be replaced the transmission will need to come out for repairs. Most good shops are happy to give you a free written estimate, ask for one before you authorize any repair work. Could be rather simple, but could just as easily be complex, hard to tell from where I'm setting. Better to have it tested than to just start throwing expensive parts at it in an attempt to fix it. Most of these failures are caused by dirt, and things getting plugged up due to lack of maintenance. Honda Service News November 2003 TITLE:A/T DTC P0740, P0741 Repair Tips: Another Look APPLIES TO:All ModelsSERVICE TIP:If you're doing a repair for DTC P0740 or P0741 (lock-up control system) on any Honda models with A/T, except Passport, refer to this table first:If there is no S/B posted on ISIS for the vehicle you're working on, go to the DTC P0740 or P0741 troubleshooting procedure in the Automatic Transmission section of the appropriate S/M or under DTC Troubleshooting in ISIS. If the procedure recommends replacing the A/T, make sure you have a reman A/T on hand. Remove the original A/T, and look at the condition of the torque converter O-ring. Then follow these tips to ensure a lasting repair.Missing or cut O-ring . If the O-ring is missing or cut, the ATF can leak internally, causing DTC P0740 or P0741 to set. Replace the O-ring, and reuse the original A/T. Make sure the problem has been fixed by connecting the HDS and testdriving the vehicle using the previous DTC P0740 or P0741 freeze data parameters (match the TPS and VSS values for at least 25 seconds ). If the DTC comes back, install the reman A/T. If the DTC doesn't come back, return the reman A/T to the reman center.Flattened or deformed O-ring . If the O-ring is flattened or deformed, replace the A/T. The O-ring can get damaged if the ATF pump seizes up and overheats. Make sure the problem has been fixed by connecting the HDS and testdriving the vehicle using the previous DTC P0740 or P0741 freeze data parameters (match the TPS and VSS values for at least 25 seconds ).O-ring is OK . If the O-ring is round and in good condition, the most likely cause for DTC P0740 or P0741 to set is the A/T, the torque converter, or both. Install the reman A/T. Make sure the problem has been fixed by connecting the HDS and test-driving the vehicle using the previous DTC P0740 or P0741 freeze data parameters (match the TPS and VSS values for 25 seconds ). Before you install the reman A/T, make sure the O-ring on the torque converter is properly installed.Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer. Thank you for using FixYa, have a nice day.