Starter motor locks up on my 89 silverado only in the morning

Check crank power may be not good,voltage could be good ???

Do you have a spare Key ? The key is probably the most likely cause of your problem. Shorting the two main terminals of the starter motor will only make the starter spin, to engage the starter with th fly-wheel you need to short the main lead (usually the outer one) with the solenoid terminal (smaller terminal) However this will not energise th fuel solenoid etc that the security system also disables. You should have your key cloned at your local lock smith retailer before it fails all together. I am an auto-electrician and seen this many a time. good luck.

When you turn the key to start does the starter engage an spin the engine ? or nothing happens .
the lights and music come on but the motor will not start when I turn the key ??????? Will not start how ?
crank - no - start or no crank no start . ????????

sounds like a bad solenoid on starter have the starter checked

If the lower pulley on the front of the engine does not turn when the starter is engaged then the problem is either that the flywheel is missing teeth (usually very noisy) or the bendix drive in the starter has broken. That is replaceable if you are good with that kind of thing but if the starter is old, it may not be worth the effort. (so just change the starter). There could also be a problem with the front pulley but that is extremely rare.

Removal & Installation

2.7L Engine

1. Remove or disconnect the following:
   
   Negative battery cable from the remote ground post Battery feed and posi-lock connectors Nuts from the catalyst support bracket and mount Starter heat shield 3 starter-to-engine/transaxle bolts Starter by rotating it toward the engine and sliding it rearward between the catalyst and the engine mount
   

To install:

1. Install or connect the following:
   
   Starter by sliding it forward between the catalyst and the engine mount and rotating it away from the engine Starter and torque the 3 starter-to-engine/transaxle bolts to 40 ft. lbs. (54 Nm) Starter heat shield Nuts to the catalyst support bracket and mount Positive battery cable and torque the nut to 89 inch lbs. (10 Nm) Posi-lock connectors Negative battery cable to the remote ground post
   

3.2L & 3.5L Engines

1. Remove or disconnect the following:
   
   Negative battery cable from the remote ground post Starter-to-engine/transaxle nut and bolts Positive battery feed wire from the starter Starter and position it to gain access to the posi-lock connector
   
2. Place a support under the engine and slightly relieve the pressure from the left engine mount.
3. Remove the 3 left engine mount-to-engine bolts.
4. Slightly, raise the engine to provide more room.
5. Remove the starter by sliding it rearward between the catalyst and the engine mount.
6. Remove the posi-lock connector.
   
   Fig. Removal and installation of the starter motor
   

To install:

1. Install or connect the following:
   
   Posi-lock connector Starter by sliding it forward between the catalyst and the engine mount
   
2. Slightly, lower the engine.
   
   3 left engine mount-to-engine bolts Positive battery feed wire to the starter and torque the nut to 89 inch lbs. (10 Nm) Starter and torque the starter-to-engine/transaxle bolts to 40 ft. lbs. (54 Nm) Negative battery cable to the remote ground post
   

Removal & Installation
2.7L Engine

1. Remove or disconnect the following:
   Negative battery cable from the remote ground post Battery feed and posi-lock connectors Nuts from the catalyst support bracket and mount Starter heat shield 3 starter-to-engine/transaxle bolts Starter by rotating it toward the engine and sliding it rearward between the catalyst and the engine mount

To install:

1. Install or connect the following:
   Starter by sliding it forward between the catalyst and the engine mount and rotating it away from the engine Starter and torque the 3 starter-to-engine/transaxle bolts to 40 ft. lbs. (54 Nm) Starter heat shield Nuts to the catalyst support bracket and mount Positive battery cable and torque the nut to 89 inch lbs. (10 Nm) Posi-lock connectors Negative battery cable to the remote ground post

3.2L & 3.5L Engines

1. Remove or disconnect the following:
   Negative battery cable from the remote ground post Starter-to-engine/transaxle nut and bolts Positive battery feed wire from the starter Starter and position it to gain access to the posi-lock connector
2. Place a support under the engine and slightly relieve the pressure from the left engine mount.
3. Remove the 3 left engine mount-to-engine bolts.
4. Slightly, raise the engine to provide more room.
5. Remove the starter by sliding it rearward between the catalyst and the engine mount.
6. Remove the posi-lock connector.
   
   
   Fig. Removal and installation of the starter motor
   

To install:

1. Install or connect the following:
   Posi-lock connector Starter by sliding it forward between the catalyst and the engine mount
   
2. Slightly, lower the engine.
   3 left engine mount-to-engine bolts Positive battery feed wire to the starter and torque the nut to 89 inch lbs. (10 Nm) Starter and torque the starter-to-engine/transaxle bolts to 40 ft. lbs. (54 Nm) Negative battery cable to the remote ground post

Hope this help (remember rated and comment).

Sounds like a bad starter, solenoid, or loose battery cable going to the starter. The clicking is the solenoid activating, so the most common problem is the contacts inside it get worn out, so it doesn't provide power to the starter motor. So if the battery cable connection there is bad, it won't kick the motor on. If it's good, then either the solenoid is transferring the power, and your starter won't turn over, or the solenoid isn't transferring the power at all. If you remove the starter, you should be able to have it tested at a parts store.

check connections at starter and junction near battery

1. Remove or disconnect the following:
   • Negative battery cables
   • Right front wheel and fender splash shield, on 6.6L engines
   • Turbocharger exhaust pipe, on 6.6L engines
   • Mounting bolts/nuts and shim, if used
   • Starter
   • Wires
   • Heat shield and bracket Exploded view of the starter motor-6.5L engine shown

To install:

1. Install or connect the following:
   • Heat shield and bracket. Torque the bolts to 13 ft lbs. (17 Nm).
   • Wires.Torque battery wire nut to 89 inch lbs. (10 Nm), and ignition nut to 18inch lbs. (2 Nm) on 6.5L engines. On 6.6L engines, tighten the solenoidnut to 30 inch lbs. (3.4 Nm) and the positive battery cable nut to 80inch lbs. (9 Nm).
   • Starter
   • Mounting bolts/nuts and shim,if used. Torque the bolts to 33 ft lbs. (45 Nm) and the nut to 75 inchlbs. (8.5 Nm) for 6.5L engines. For 6.6L engines tighten the starterbolts to 58 ft. lbs. (78 Nm).
   • Turbocharger exhaust pipe, on 6.6L engines
   • Right front fender splash shield and wheel, on 6.6L engines
   • Negative battery cables