1997 GMC Jimmy - Answered Questions & Fixed issues

I would check wires at doors opening . you have to remove rubber and look for open circuit. Pull on each wire . you will see. Ground problem ??

Certain things wont operate. Buy a haynes repair book at parts for testing fuses&relays

1. For the 4.3L engines which are equipped with screw-in type rocker arm studs with positive stop shoulders, tighten the rocker arm adjusting nuts against the stop shoulders to 20 ft. lbs. (27 Nm) on 1994-96 models and 18 ft. lbs. (25 Nm) on 1997-99 models. No further adjustment is necessary, or possible.
   
2. For most 4.3L engines which are not equipped with screw-in type rocker arm studs and positive stop shoulders, properly adjust the valve lash. For details on valve lash adjustment, please refer to the procedure in Routine Maintenance . (see below)

4.3L Engine

The 4.3L engines may be equipped with either of 2 rocker arm retaining systems. If your engine utilizes screw-in type rocker arm studs with positive stop shoulders, no valve lash adjustment is necessary or possible. If however, you engine utilizes the pressed-in rocker arm studs, use the following procedure to tighten the rocker arm nuts and properly center the pushrod on the hydraulic lifter:

1. To prepare the engine for valve adjustment, rotate the crankshaft until the mark on the damper pulley aligns with the 0? mark on the timing plate and the No. 1 cylinder is on the compression stroke. You will know when the No. 1 piston is on it's compression stroke because both the intake and exhaust valves will remain closed as the crankshaft damper mark approaches the timing scale.

Another method to tell when the piston is coming up on the compression stroke is by removing the spark plug and placing your thumb over the hole, you will feel the air being forced out of the spark plug hole. Stop turning the crankshaft when the TDC timing mark on the crankshaft pulley is directly aligned with the timing mark pointer or the zero mark on the scale.
The valve arrangement is as follows:



E-I-I-E-I-E (right bank-front-to-rear) E-I-E-I-I-E (left bank-front-to-rear)

1. With the engine on the compression stroke, adjust the exhaust valves of cylinders No. 1, 5 & 6 and the intake valves of cylinders No. 1, 2 & 3 by performing the following procedures:
   1. Back out the adjusting nut until lash can be felt at the pushrod.
   2. While rotating the pushrod, turn the adjusting nut inward until all of the lash is removed.
   3. When the play has disappeared, turn the adjusting nut inward 1 3 / 4 additional turns.
   
   
2. Rotate the crankshaft one complete revolution and align the mark on the damper pulley with the 0? mark on the timing plate; the engine is now positioned on the No. 4 firing position. This time the No. 4 cylinder valves remain closed as the timing mark approaches the scale. Adjust the exhaust valves of cylinders No. 2, 3 & 4 and the intake valves of cylinders No. 4, 5 & 6, by performing the following procedures:
   1. Back out the adjusting nut until lash can be felt at the pushrod.
   2. While rotating the pushrod, turn the adjusting nut inward until all of the lash is removed.
   3. When the play has disappeared, turn the adjusting nut inward 1 3 / 4 additional turn.
   
   

Flasher module should be located behind the glove box on connector C203 bolted to the firewall. You may be able to get at it by opening the glove box, and then releasing the stop tab at the top left of the opening to swing the box out of the opening on its hinges.

Did you change the fuel filter? did you put back right?

Chime needs only a ground to work So if that can help try to move the harness and look if chime work normally. If it does then one wire touching the ground on and off (wire touching metal) Hope it helps.

Brake bleeding Procedure 1. First, you have to depress pin location (see Image) Keep this pin block so it will not pop out during the bleeding otherwise air will stay trap inside the system. 2. Start bleeding the Brake cylinder that is the farthest from the Brake master cylinder. Do the 4 wheels in the same matter. Hope it helps.

The problem is probably a faulty diverter door actuator or vacuum problem at the HVAC plenum under the dash. This is a common problem - see YouTube for help diagnosing this: https://www.youtube.com/watch?v=Nlt9A1sp-4U

where is the fluid leaking from? The transmission or the transfer case? Pretty important to know where it's coming from before asking for help

The only C3500 info I find pertains to pickups and Vans. You need to be very clear about yr, make, model, engine size, 2 or 4 WD. The more info, the better. This is what I see for a 97 Jimmy 4WD.

just get the service and repair manual from the given link and solve all the problem http://toolsnyou.com/

Have you checked the relays?

It sounds like a fan blade is bent and is making contact somewhere , these are usually aluminium and easily pushed back into shape , but if the fan has worn out its bearings it will need to be replaced unless there is some sort of material that has wrapped itself around the fan causing it to jam up .

Visit the on-line store, known as reliable-store, they have the repair manuals. I'm sure you will get the solution of your problem. Best Manuals

Sound like an Ecu I had a similar problem on a Vauxhall Corsa changed the fuel pump, Fuel filter, fuel pump relay but same prob i cleaned all the grounding points there was so many codes. I then opened up the ECU and found a broken wire re soldered it back in place and all the codes went away no cutting off in the midst of a roundabout hope this helps

There are two basic reasons for not starting - no spark or no fuel, both of which are controlled by the ECM. You need to check error codes and these items - for the spark, test it at the cylinder 1 sparkplug; for the fuel check the pressure (if too high or low, problem!).

verify throttle position sensor voltage off idle. oscilloscope is best. on regulur voltmeter use min max

Your trouble description fits the symptoms of a transmission solenoid problem. Find more information here: Transmission Solenoid Symptoms Replacement Cost

Have no clue as to what you want ? Like to try an explain a little better . What do DTC'S 740 , 785 and 1860 have to do with key in ignition chimes . Plus i'am assuming the DTC'S you have listed all start with P - P0740 , P0785 and P1860 . DTC P0740 TCC Enable Solenoid Circuit Electrical (2.2L) DTC P0740 TCC Enable Solenoid Circuit Electrical (4.3L) DTC P0785 3-2 Shift Solenoid Circuit Electrical (2.2L) DTC P0785 3-2 Shift Solenoid Circuit Electrical (4.3L) DTC P1860 TCC PWM Solenoid Circuit Electrical (2.2L) DTC P1860 TCC PWM Solenoid Circuit Electrical (4.3L) None of these have anything to do with warning chimes . Key-In Warning Buzzer Voltage is supplied at all times to the truck BCM through the following components: • The underhood bussed electrical center (UBEC) fuse 4 • CKT 1140 (ORN) The chime or buzzer sounds if the following conditions exist: • The key is in the ignition switch • The vehicle is not running. • The left door is open. When the door is open, the LF door jamb switch closes to ground. This provides a ground to the truck BCM through the following components: • CKT 126 (TAN) • The left front side door jamb switch • CKT 1050 (BLK) • SP203 • C203, cavity F12 • G203 The chime or the buzzer will sound for as long as the door is open and the key is in the ignition switch. Turn the ignition switch to the OFF position. Remove the key from the ignition. Using the scan tool, enter BCM Data List. Select Input 1. Does the KEY IN IGNITION test display NO? 3 Turn the ignition switch to the OFF position. Remove the key from the ignition. Using the scan tool, enter BCM Data List. Select Input 1. Does the KEY IN IGNITION test display NO? -- Go to Step 4 Go to Step 8 4 Turn the ignition switch to the OFF position. Remove the key from the ignition. Move the headlamp switch to the OFF position. Using the scan tool, enter BCM Data List. Select Input 2. Does the PARKLAMPS test display OFF? -- Go to Step 5 Go to Step 9 5 Inspect the connections at the BCM. Are the connections in need of repair? -- Go to Step 6 Go to Step 7 6 Repair the connections as necessary. Is the repair complete? -- Go to Diagnostic System Check - Audible Warnings -- 7 Replace the BCM. Refer to Body Control Module Replacement in Body Control System. Is the repair complete? -- Go to Diagnostic System Check - Audible Warnings -- 8 Locate and repair the short to ground in CKT 80 between the BCM connector C2 terminal B9 and the key in ignition alarm switch. Is the repair complete? -- Go to Diagnostic System Check - Audible Warnings -- 9 Are the park lamps ON with the switch OFF? -- Go to Exterior Lights System Check in Lighting Systems Go to Step 5 Your best bet take to a qualified repair shop

Try formulating the question better as you are jumping from 2009 to 2010 for a year later then asking for an answer 7 years after