2004 GMC Sierra 2500 6.0L Cooling System
cooling system worked great last year while pulling a 20 ft trailer, but this year the truck runs very hot (260deg) on long runs and up hills. we replaced thermostat and flushed cooling system. we performed hc test in cooling system and passed ok. temp guns sh...
FIX posted 7/5/2005
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Message Closed w/FIX
Vehicle Data2004 GMC Sierra 2500
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Message Closed w/FIX
Vehicle Data
2004 GMC Sierra 2500
VIN | 1GTGK23U64 |
Engine | 6.0 L / 8 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI |
Affected | Cooling System |
Conditions | Running Hot |