TSB PIP5346 — Cadillac, Chevrolet, GMC and Pontiac Service bulletin

PIP5346 is a service bulletin on file with NHTSA for 12 Cadillac, Chevrolet, GMC and Pontiac models, 1999 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.

What the bulletin says. This Preliminary Information communication provides information to the technician about cooler line fittings that come with the 4T65E General Motors remanufactured transmission may not be the same as Original equipment manufacturer quick connect verses inverted flare. Dealer…

NHTSA's own summary of the document, quoted from the public manufacturer-communications file.

1Document filed
12Vehicles named
1Model year

Vehicles and model years PIP5346 names

VehicleModel years
Cadillac Escalade 1999
Chevrolet Blazer 1999
Chevrolet Camaro 1999
Chevrolet Corvette 1999
Chevrolet Malibu 1999
Chevrolet S10 1999
Chevrolet Suburban 1999
Chevrolet Tahoe 1999
GMC Envoy 1999
GMC Yukon 1999
Pontiac Grand Am 1999
Pontiac Grand Prix 1999

Every document filed under PIP5346

Document IDFiledType
PIP5346 November 2, 2015 Service bulletin

What PIP5346 covers

Transmission & drivetrain — the component vocabulary NHTSA files this communication under.

← All Cadillac Escalade TSB years TSB lookup by model

Questions buyers ask

What is TSB PIP5346?

PIP5346 is a service bulletin filed with NHTSA by Cadillac, Chevrolet, GMC and Pontiac, covering 12 Cadillac, Chevrolet, GMC and Pontiac models across the 1999 model years. NHTSA's summary reads: This Preliminary Information communication provides information to the technician about cooler line fittings that come with the 4T65E General Motors remanufactured transmission may not be the same as Original equipment manufacturer quick connect verses inverted flare. Dealer…

Which vehicles does PIP5346 cover?

NHTSA's file names Cadillac Escalade (1999); Chevrolet Blazer (1999); Chevrolet Camaro (1999); Chevrolet Corvette (1999); Chevrolet Malibu (1999); Chevrolet S10 (1999); Chevrolet Suburban (1999); Chevrolet Tahoe (1999); GMC Envoy (1999); GMC Yukon (1999), and 2 more vehicles listed on this page. A bulletin number can be re-issued against more vehicles later, so check the model-year list on this page against your own.

Is TSB PIP5346 a recall, and is the repair free?

No. PIP5346 is repair guidance the manufacturer sent its dealers, not a safety defect finding. You pay for the work unless the vehicle is still under warranty. Recall repairs, by contrast, are always free.

How do I get the full text of PIP5346?

Take the document ID to a dealer's service desk, or search NHTSA's manufacturer-communications records. This page carries every document ID filed under PIP5346, its date, and NHTSA's own summary from the public file.

Data updated 2026-08-20 from NHTSA's public records

Every number on this page is a count of records in the federal complaint, recall, and investigation files published by NHTSA's Office of Defects Investigation. This page lists only what NHTSA's manufacturer-communications file records under PIP5346. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.