2010 GMC Sierra 1500 WT 5.3L Trailer Module
We have code b3894. When through aldata pinpoint test and replaced trialer module/fuel pump module. Did not fix. Then tried brake light switch, no luck. The scanner shows brake signal on at 90psi. The brake lights come on with very light pressure on pedal. As ...
FIX posted 12/21/2012
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Message Closed w/FIX
Vehicle Data2010 GMC Sierra 1500 WT
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Message Closed w/FIX
Vehicle Data
2010 GMC Sierra 1500 WT
VIN | 1GTSCTE04A |
Engine | 5.3 L / 8 cyl / FLEX |
Trans | 4-speed Automatic (Electronic) |
Delivery | Fuel Injection |
Affected | Trailer Module |
Conditions | Serial Data |