One problem related to engine overheat has been reported for the 1997 GMC Sierra. The most recently reported issues are listed below.
Was informed by repair shop that this is a common problem with 5. 7 liter eng. Factory installed front / rear sealer is weak material. Need to install gasket type seal. Defect can cause engine to overheat and fail. Failure could result in fire or purchase of new engine. Please advise.