| Subject: | Information on Not Re-Using Engine Block Heater | 
| Models: | 1999-2007 Chevrolet W-Series Medium Duty Tilt Cab Models | 
| 1999-2007 GMC W-Series Medium Duty Tilt Cab Models | 
| 1999-2007 Isuzu NPR/NQR/NRR Commercial Models | 
| with 4.75L 4HE1-TC or 5.2L 4HK1-TC Diesel Engine | 
In the event that an engine block heater is removed from an engine for a repair, an attempt to re-install the block heater could result in coolant leakage.
An engine block heater should be used for a one-time installation only. Whenever an engine block heater is removed, it should be scrapped/discarded by the dealer and not re-used. Re-install a new block heater.
Part Number  | Description  | 
|---|---|
97043597  | Heater Pkg, Eng Blk  | 
Part Number  | Description  | 
|---|---|
8-97043-597-0  | Heater Pkg, Eng Blk  | 
Parts are to be obtained from AIPDN.
Labor Operation  | Description  | Labor Time  | 
|---|---|---|
J3524  | Heater, Engine Coolant - Replace  | 0.3 hr  |